- Introduction
- A through C
- D through E
- fdl through frame-relay lapf n200
- frame-relay lapf n201 through fr-atm connect dlci
- H through L
- M through R
- sequencing through show rgf statistics
- show smds addresses through waas export
- x25 accept-reverse through x25 pvc (XOT)
- x25 pvc rbp local through xot access-group
- frame-relay lapf n201
- frame-relay lapf t200
- frame-relay lapf t203
- frame-relay lmi-n391dte
- frame-relay lmi-n392dce
- frame-relay lmi-n392dte
- frame-relay lmi-n393dce
- frame-relay lmi-n393dte
- frame-relay lmi-t392dce
- frame-relay lmi-type
- frame-relay local-dlci
- frame-relay map
- frame-relay map bridge
- frame-relay map clns
- frame-relay map ip tcp header-compression
- frame-relay mincir
- frame-relay multicast-dlci
- frame-relay multilink ack
- frame-relay multilink bandwidth-class
- frame-relay multilink bid
- frame-relay multilink hello
- frame-relay multilink lid
- frame-relay multilink output-threshold
- frame-relay multilink retry
- frame-relay payload-compression
- frame-relay policing
- frame-relay priority-dlci-group
- frame-relay priority-group
- frame-relay pvc
- frame-relay qos-autosense
- frame-relay route
- frame-relay svc
- frame-relay switching
- frame-relay tc
- frame-relay traffic-rate
- frame-relay traffic-shaping
- frame-relay traps-maximum dlci-status-change
- frame-relay vc-bundle
- fr-atm connect dlci
frame-relay lapf n201
To set the Link Access Procedure for Frame Relay (LAPF) N201 value (the maximum length of the Information field of the LAPF I frame), use the frame-relay lapf n201 command in interface configuration mode. To reset the maximum length of the Information field to the default of 260 bytes (octets), use the no form of this command.
frame-relay lapf n201 bytes
no frame-relay lapf n201 [bytes]
Syntax Description
bytes |
Maximum number of bytes in the Information field of the LAPF I frame. Range is from 1 to 16384. Default is 260. |
Defaults
260 bytes
Command Modes
Interface configuration
Command History
Usage Guidelines
This command is used to tune Layer 2 system parameters to work well with the Frame Relay switch. Normally, you do not need to change the default setting.
Manipulation of Layer 2 parameters is not recommended if you do not know well the resulting functional change. For more information, refer to the ITU-T Q.922 specification for LAPF.
Examples
The following example resets the N201 maximum information field length to the default value:
no frame-relay lapf n201
frame-relay lapf t200
To set the Link Access Procedure for Frame Relay (LAPF) retransmission timer value T200, use the frame-relay lapf t200 command in interface configuration mode. To reset the T200 timer to the default value of 15, use the no form of this command.
frame-relay lapf t200 tenths-of-a-second
no frame-relay lapf t200
Syntax Description
tenths-of-a-second |
Time, in tenths of a second. Range is from 1 to 100. Default is 15. |
Defaults
15 tenths of a second (1.5 seconds)
Command Modes
Interface configuration
Command History
Usage Guidelines
The retransmission timer value T200 should be less than the link idle timer value T203 (using the same time unit).
This command is used to tune Layer 2 system parameters to work well with the Frame Relay switch. Normally, you do not need to change the default setting.
Manipulation of Layer 2 parameters is not recommended if you do not know well the resulting functional change. For more information, refer to the ITU-T Q.922 specification for LAPF.
Examples
The following example resets the T200 timer to the default value:
no frame-relay lapf t200
Related Commands
|
|
---|---|
frame-relay lapf t203 |
Sets the LAPF link idle timer value T203 of DLCI 0. |
frame-relay lapf t203
To set the Link Access Procedure for Frame Relay (LAPF) link idle timer value T203 of data-link connection identifier (DLCI) 0, use the frame-relay lapf t203 command in interface configuration mode. To reset the link idle timer to the default value, use the no form of this command.
frame-relay lapf t203 seconds
no frame-relay lapf t203
Syntax Description
seconds |
Maximum time allowed with no frames exchanged. Range is from 1 to 65535 seconds. Default is 30. |
Defaults
30 seconds
Command Modes
Interface configuration
Command History
Usage Guidelines
The frame-relay lapf t203 command applies to the link; that is, it applies to DLCI 0. Circuits other than DLCI 0 are not affected.
The link idle timer value T203 should be greater than the retransmission timer value T200 (using the same time unit).
This command is used to tune Layer 2 system parameters to work well with the Frame Relay switch. Normally, you do not need to change the default setting.
Manipulation of Layer 2 parameters is not recommended if you do not know well the resulting functional change. For more information, refer to the ITU-T Q.922 specification for LAPF.
Examples
The following example resets the T203 idle link timer to the default value:
no frame-relay lapf t203
frame-relay lmi-n391dte
To set a full status polling interval, use the frame-relay lmi-n391dte command in interface configuration mode. To restore the default interval value, assuming that a Local Management Interface (LMI) has been configured, use the no form of this command.
frame-relay lmi-n391dte keep-exchanges
no frame-relay lmi-n391dte keep-exchanges
Syntax Description
keep-exchanges |
Number of keep exchanges to be done before requesting a full status message. Acceptable value is a positive integer in the range from 1 to 255. |
Defaults
6 keep exchanges
Command Modes
Interface configuration
Command History
Usage Guidelines
Use this command when the interface is configured as data terminal equipment (DTE) or a Network-to-Network Interface (NNI) as a means of setting the full status message polling interval.
Examples
In the following example, one out of every four status inquiries generated will request a full status response from the switch. The other three status inquiries will request keepalive exchanges only.
interface serial 0
frame-relay intf-type DTE
frame-relay lmi-n391dte 4
frame-relay lmi-n392dce
To set the DCE and the Network-to-Network Interface (NNI) error threshold, use the frame-relay lmi-n392dce command in interface configuration mode. To remove the current setting, use the no form of this command.
frame-relay lmi-n392dce threshold
no frame-relay lmi-n392dce threshold
Syntax Description
threshold |
Error threshold value. Acceptable value is a positive integer in the range from 1 to 10. |
Defaults
2 errors
Command Modes
Interface configuration
Command History
Usage Guidelines
In Cisco's implementation, N392 errors must occur within the number defined by the N393 event count in order for the link to be declared down. Therefore, the threshold value for this command must be less than the count value defined in the frame-relay lmi-n393dce command.
Examples
The following example sets the LMI failure threshold to 3. The router acts as a Frame Relay DCE or NNI switch.
interface serial 0
frame-relay intf-type DCE
frame-relay lmi-n392dce 3
Related Commands
|
|
---|---|
frame-relay lmi-n393dce |
Sets the DCE and NNI monitored events count. |
frame-relay lmi-n392dte
To set the error threshold on a DTE or network-to-network interface (NNI) interface, use the frame-relay lmi-n392dte command in interface configuration mode. To remove the current setting, use the no form of this command.
frame-relay lmi-n392dte threshold
no frame-relay lmi-n392dte threshold
Syntax Description
threshold |
Error threshold value. Acceptable value is a positive integer in the range from 1 to 10. |
Defaults
3 errors
Command Modes
Interface configuration
Command History
Examples
The following example sets the Local Management Interface (LMI) failure threshold to 3. The router acts as a Frame Relay DTE or NNI switch.
interface serial 0
frame-relay intf-type DTE
frame-relay lmi-n392dte 3
frame-relay lmi-n393dce
To set the DCE and Network-to-Network Interface (NNI) monitored events count, use the frame-relay lmi-n393dce command in interface configuration mode. To remove the current setting, use the no form of this command.
frame-relay lmi-n393dce events
no frame-relay lmi-n393dce events
Syntax Description
events |
Value of monitored events count. Acceptable value is a positive integer in the range from 1 to 10. |
Defaults
2 events
Command Modes
Interface configuration
Command History
Usage Guidelines
This command and the frame-relay lmi-n392dce command define the condition that causes the link to be declared down. In Cisco's implementation, N392 errors must occur within the events argument count in order for the link to be declared down. Therefore, the events value defined in this command must be greater than the threshold value defined in the frame-relay lmi-n392dce command.
Examples
The following example sets the Local Management Interface (LMI) monitored events count to 3. The router acts as a Frame Relay DCE or NNI switch.
interface serial 0
frame-relay intf-type DCE
frame-relay lmi-n393dce 3
Related Commands
|
|
---|---|
frame-relay lmi-n392dce |
Sets the DCE and the NNI error threshold. |
frame-relay lmi-n393dte
To set the monitored event count on a DTE or Network-to-Network Interface (NNI) interface, use the frame-relay lmi-n393dte command in interface configuration mode. To remove the current setting, use the no form of this command.
frame-relay lmi-n393dte events
no frame-relay lmi-n393dte events
Syntax Description
events |
Value of monitored events count. Acceptable value is a positive integer in the range from 1 to 10. |
Defaults
4 events
Command Modes
Interface configuration
Command History
Examples
The following example sets the Local Management Interface (LMI) monitored events count to 3. The router acts as a Frame Relay DTE or NNI switch.
interface serial 0
frame-relay intf-type DTE
frame-relay lmi-n393dte 3
frame-relay lmi-t392dce
To set the polling verification timer on a DCE or Network-to-Network Interface (NNI) interface, use the frame-relay lmi-t392dce command in interface configuration mode. To remove the current setting, use the no form of this command.
frame-relay lmi-t392dce seconds
no frame-relay lmi-t392dce seconds
Syntax Description
seconds |
Polling verification timer value from 5 to 30 seconds. |
Defaults
15 seconds
Command Modes
Interface configuration
Command History
Usage Guidelines
The value for the timer must be greater than the DTE or NNI keepalive timer.
Examples
The following example indicates a polling verification timer on a DCE or NNI interface set to 20 seconds:
interface serial 3
frame-relay intf-type DCE
frame-relay lmi-t392dce 20
Related Commands
|
|
---|---|
keepalive (LMI) |
Enables the LMI mechanism for serial lines using Frame Relay encapsulation. |
frame-relay lmi-type
To select the Local Management Interface (LMI) type, use the frame-relay lmi-type command in interface configuration mode. To return to the default LMI type, use the no form of this command.
frame-relay lmi-type {ansi | cisco | q933a}
no frame-relay lmi-type {ansi | q933a}
Syntax Description
ansi |
Annex D defined by American National Standards Institute (ANSI) standard T1.617. |
cisco |
LMI type defined jointly by Cisco and three other companies. |
q933a |
ITU-T Q.933 Annex A. |
Defaults
LMI autosense is active and determines the LMI type by communicating with the switch.
Command Modes
Interface configuration
Command History
Usage Guidelines
Cisco's implementation of Frame Relay supports three LMI types: Cisco, ANSI Annex D, and ITU-T Q.933 Annex A.
The LMI type is set on a per-interface basis and is shown in the output of the show interfaces EXEC command.
If you want to deactivate LMI autosense, use this command and the keepalive command to configure the LMI. For more information about LMI autosense and configuring the LMI, refer to the chapter "Configuring Frame Relay" in the Cisco IOS Wide-Area Networking Configuration Guide.
Examples
The following is an example of the commands you might enter to configure an interface for the ANSI Annex D LMI type:
interface Serial1
encapsulation frame-relay
frame-relay lmi-type ansi
keepalive 15
frame-relay local-dlci
To set the source data-link connection identifier (DLCI) for use when the Local Management Interface (LMI) is not supported, use the frame-relay local-dlci command in interface configuration mode. To remove the DLCI number, use the no form of this command.
frame-relay local-dlci number
no frame-relay local-dlci
Syntax Description
number |
Local (source) DLCI number to be used. |
Defaults
No source DLCI is set.
Command Modes
Interface configuration
Command History
Usage Guidelines
If LMI is supported and the multicast information element is present, the network server sets its local DLCI based on information provided via the LMI.
Note The frame-relay local-dlci command is provided mainly to allow testing of the Frame Relay encapsulation in a setting where two servers are connected back-to-back. This command is not required in a live Frame Relay network.
Examples
The following example specifies 100 as the local DLCI:
interface serial 4
frame-relay local-dlci 100
frame-relay map
To define the mapping between a destination protocol address and the data-link connection identifier (DLCI) or Frame Relay permanent virtual circuit (PVC) bundle that connects to the destination address, use the frame-relay map command in interface configuration mode. To delete the map entry, use the no form of this command.
frame-relay map protocol protocol-address {dlci | vc-bundle vc-bundle-name}[broadcast] [ietf | cisco] [payload-compression {packet-by-packet | frf9 stac [one-way-negotiation] [ratio level] [skip-zero-sync] [software | hardware-options] | data-stream stac [one-way-negotiation] [ratio level] [software | hardware-options]}]
no frame-relay map protocol protocol-address
Syntax Description
protocol |
One of the following values: appletalk, decnet, dlsw, ip, ipx, llc2, and rsrb. |
protocol-address |
Destination protocol address. |
dlci |
DLCI number used to connect to the specified protocol address on the interface. Acceptable numbers are integers from 16 through 1007, inclusive. |
vc-bundle vc-bundle-name |
A specific Frame Relay PVC bundle configured on the interface. |
broadcast |
(Optional) Forwards broadcasts to this address when multicast is not enabled (see the frame-relay multicast-dlci command for more information about multicasts). This keyword also simplifies the configuration of Open Shortest Path First (OSPF) (see the "Usage Guidelines" section for more detail). |
ietf |
(Optional) Internet Engineering Task Force (IETF) form of Frame Relay encapsulation, based on RFC 1490 and RFC 2427. Used when the router or access server is connected to another vendor's equipment across a Frame Relay network. |
cisco |
(Optional) Cisco-proprietary encapsulation method consisting of a four-byte header, with two bytes to identify the DLCI and two bytes to identify the packet type. |
payload-compression |
(Optional) Enables payload compression. |
packet-by-packet |
(Optional) Packet-by-packet payload compression using the Stacker method. |
frf9 stac |
(Optional) Enables FRF.9 compression using the Stacker method. •If the router contains a CSA1 , compression is performed in the CSA hardware (hardware compression). •If the CSA is not available, compression is performed in the software installed on the VIP22 (distributed compression). •If the VIP2 is not available, compression is performed in the main processor of the router (software compression). |
one-way-negotiation |
(Optional) Enables one-way negotiation. Use this keyword if your router will be negotiating compression with another device that is running Cisco IOS Release 12.1(9) or earlier releases. Later Cisco IOS releases use a two-way handshake by default to negotiate compression. |
ratio level |
(Optional) Sets throughput versus compression ratio. This option is available only with hardware compression. Possible values for the level argument are as follows: high—high compression versus low throughput medium—medium compression versus medium throughput low—low compression versus high throughput (default) |
software |
(Optional) Specifies that compression is implemented in the Cisco IOS software installed in the main processor of the router. |
hardware-options |
(Optional) Choose one of the following hardware options: caim element-number—Enables the CAIM3 to perform compression. distributed—Specifies that compression is implemented in the software that is installed in a VIP2. If the VIP2 is not available, compression is performed in the main processor of the router (software compression). This option applies only to the Cisco 7500 series routers. This option is not supported with data-stream compression. csa csa_number—Specifies the CSA to use for a particular interface. This option applies only to Cisco 7200 series routers. |
skip-zero-sync |
(Optional) Causes compression frames to be numbered starting from 1 rather than 0. Use this keyword if your router will be interoperating with a device conforming to IBM partner conventions. |
data-stream stac |
(Optional) Enables data-stream compression using the Stacker method. •If the router contains a CSA, compression is performed in the CSA hardware (hardware compression). •If the CSA is not available, compression is performed in the main processor of the router (software compression). |
1 CSA = compression service adapter 2 VIP2 = second-generation Versatile Interface Processor 3 CAIM = compression Advanced Interface Module |
Defaults
No mapping is defined.
Command Modes
Interface configuration
Command History
Usage Guidelines
Many DLCIs can be known by a router or access server and can send data to many different places, but they are all multiplexed over one physical link. The Frame Relay map defines the logical connection between a specific protocol and address pair and the correct DLCI or PVC bundle.
The optional ietf and cisco keywords allow flexibility in the configuration. If no keywords are specified, the map inherits the attributes set with the encapsulation frame-relay command. You can also use the encapsulation options to specify, for example, that all interfaces use IETF encapsulation except one, which needs the original Cisco encapsulation method and can be configured through use of the cisco keyword with the frame-relay map command.
Data-stream compression is supported on interfaces and virtual circuits (VCs) using Cisco proprietary encapsulation. When the data-stream stac keyword is specified, Cisco encapsulation is automatically enabled. FRF.9 compression is supported on IETF-encapsulated VCs and interfaces. When the frf9 stac keyword is specified, IETF encapsulation is automatically enabled.
Packet-by-packet compression is Cisco-proprietary and will not interoperate with routers of other manufacturers.
You can disable payload compression by entering the no frame-relay map payload command and then entering the frame-relay map command again with one of the other encapsulation keywords (ietf or cisco).
Use the frame-relay map command to enable or disable payload compression on multipoint interfaces. Use the frame-relay payload-compression command to enable or disable payload compression on point-to-point interfaces.
We recommend that you shut down the interface before changing encapsulation types. Although shutting down the interface is not required, it ensures that the interface is reset for the new encapsulation.
The broadcast keyword provides two functions: it forwards broadcasts when multicasting is not enabled, and it simplifies the configuration of OSPF for nonbroadcast networks that will use Frame Relay.
The broadcast keyword may also be required for some routing protocols—for example, AppleTalk—that depend on regular routing table updates, especially when the router at the remote end is waiting for a routing update packet to arrive before adding the route.
By requiring selection of a designated router, OSPF treats a nonbroadcast, multiaccess network such as Frame Relay in much the same way as it treats a broadcast network. When the frame-relay map command (with the broadcast keyword) and the ip ospf network command (with the broadcast keyword) are configured, there is no need to configure any neighbors manually. OSPF will run automatically over the Frame Relay network as a broadcast network. (See the ip ospf network interface command for more detail.)
Note The OSPF broadcast mechanism assumes that IP class D addresses are never used for regular traffic over Frame Relay.
Examples
IP Address to DLCI Mapping: Example
The following example maps the destination IP address 172.16.123.1 to DLCI 100:
interface serial 0
frame-relay map ip 172.16.123.1 100 broadcast
OSPF will use DLCI 100 to broadcast updates.
IP Address to Frame Relay PVC Bundle Mapping: Example
The following example maps the destination IP address 172.16.123.1 to the Frame Relay PVC bundle named "MAIN-1":
interface serial 0
frame-relay map ip 172.16.123.1 vc-bundle MAIN-1 broadcast
FRF.9 Compression: Example
The following example shows FRF.9 compression configuration using the frame-relay map command:
interface serial2/0/1
ip address 172.16.1.4 255.255.255.0
no ip route-cache
encapsulation frame-relay ietf
no keepalive
shutdown
frame-relay map ip 172.16.1.1 105 ietf payload-compression frf9 stac
Data-Stream Compression: Example
The following example shows data-stream compression configuration using the frame-relay map command:
interface serial0/0
frame-relay map ip 10.0.0.1 100 payload-compression data-stream stac
Related Commands
frame-relay map bridge
To specify that broadcasts are to be forwarded during bridging, use the frame-relay map bridge command in interface configuration mode. To delete the map entry, use the no form of this command.
frame-relay map bridge dlci [broadcast] [ietf]
no frame-relay map bridge dlci
Syntax Description
Defaults
No broadcasts are forwarded.
Command Modes
Interface configuration
Command History
Examples
The following example uses DLCI 144 for bridging:
interface serial 0
frame-relay map bridge 144 broadcast
The following example sets up separate point-to-point links over a subinterface and runs transparent bridging over it:
interface serial 0
bridge-group 1
encapsulation frame-relay
interface serial 0.1
bridge-group 1
frame-relay map bridge 42 broadcast
interface serial 0.2
bridge-group 1
frame-relay map bridge 64 broadcast
interface serial 0.3
bridge-group 1
frame-relay map bridge 73 broadcast
DLCI 42 is used as the link; refer to the section "Frame Relay Configuration Examples" in the Cisco IOS Wide-Area Networking Configuration Guide for more examples of subinterfaces.
frame-relay map clns
To forward broadcasts when Connectionless Network Service (CLNS) is used for routing, use the frame-relay map clns command in interface configuration mode. To delete the map entry, use the no form of this command.
frame-relay map clns dlci [broadcast]
no frame-relay map clns dlci
Syntax Description
dlci |
DLCI number to which CLNS broadcasts are forwarded on the specified interface. |
broadcast |
(Optional) Broadcasts are forwarded when multicast is not enabled. |
Defaults
No broadcasts are forwarded.
Command Modes
Interface configuration
Command History
Examples
The following example uses DLCI 125 for CLNS routing:
interface serial 0
frame-relay map clns 125 broadcast
frame-relay map ip tcp header-compression
To assign to an IP map header compression characteristics that differ from the compression characteristics of the interface with which the IP map is associated, use the frame-relay map ip tcp header-compression command in interface configuration mode.
frame-relay map ip ip-address dlci [broadcast] tcp header-compression [active | passive] [connections number]
Syntax Description
Defaults
Maximum number of TCP header compression connections: 256
Command Modes
Interface configuration
Command History
Usage Guidelines
If you do not specify the number of TCP header compression connections, the map will inherit the current value from the interface.
IP maps inherit the compression characteristics of the associated interface unless this command is used to provide different characteristics. This command can also reconfigure an IP map that existed before TCP header compression was configured on the associated interface.
When IP maps at both ends of a connection inherit passive compression, the connection will never transfer compressed traffic because neither side will generate a packet that has a compressed header.
If you change the encapsulation characteristics of the interface to Internet Engineering Task Force (IETF) encapsulation, you lose the TCP header compression configuration of the associated IP map.
The frame-relay map ip ip-address dlci tcp header-compression active command can also be entered as frame-relay map ip ip-address dlci active tcp header-compression.
We recommend that you shut down the interface before changing encapsulation types. Although shutting down the interface is not required, it ensures that the interface is reset for the new encapsulation.
Examples
The following example illustrates a command sequence for configuring an IP map associated with serial interface 1 to enable active TCP/IP header compression:
interface serial 1
encapsulation frame-relay
ip address 10.108.177.170 255.255.255.0
frame-relay map ip 10.108.177.180 190 tcp header-compression active
Related Commands
frame-relay mincir
To specify the minimum acceptable incoming or outgoing committed information rate (CIR) for a Frame Relay virtual circuit, use the frame-relay mincir command in map-class configuration mode. To reset the minimum acceptable CIR to the default, use the no form of this command.
frame-relay mincir {in | out} bps
no frame-relay mincir
Syntax Description
in |
Specifies an incoming CIR. |
out |
Specifies an outgoing CIR. |
bps |
Rate, in bits per second. |
Defaults
56000 bps
Command Modes
Map-class configuration
Command History
Usage Guidelines
Rate values greater than 2048 must be entered with trailing zeros. For example, 2048000 and 5120000.
The network uses the mincir value when allocating resources for the virtual circuit. If the mincir value cannot be supported, the call is cleared.
Examples
The following example defines the peak and average traffic rate, the minimum CIR, and the idle timer for the fast_vcs map class and applies those values to DLCI 100, which is associated with that map class:
interface serial 0
frame-relay interface-dlci 100
class fast_vc
map-class frame-relay fast_vc
frame-relay traffic-rate 56000 128000
frame-relay idle-timer 30
frame-relay mincir out 48000
Related Commands
|
|
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map-class frame-relay |
Specifies a map class to define QoS values for virtual circuits. |
frame-relay multicast-dlci
To define the data-link connection identifier (DLCI) to be used for multicasts, use the frame-relay multicast-dlci command in interface configuration mode. To remove the multicast group, use the no form of this command.
frame-relay multicast-dlci number
no frame-relay multicast-dlci
Syntax Description
number |
Multicast DLCI. |
Defaults
No DLCI is defined.
Command Modes
Interface configuration
Command History
Usage Guidelines
Use this command when the multicast facility is not supported. Network transmissions (packets) sent to a multicast DLCI are delivered to all network servers defined as members of the multicast group.
Note The frame-relay multicast-dlci command is provided mainly to allow testing of the Frame Relay encapsulation in a setting where two servers are connected back-to-back. This command is not required in a live Frame Relay network.
Examples
The following example specifies 1022 as the multicast DLCI:
interface serial 0
frame-relay multicast-dlci 1022
frame-relay multilink ack
To configure the number of seconds for which a bundle link will wait for a hello message acknowledgment before resending the hello message, use the frame-relay multilink ack command in interface configuration mode. To reset this parameter to the default setting, use the no form of this command.
frame-relay multilink ack seconds
no frame-relay multilink ack
Syntax Description
seconds |
Number of seconds for which a bundle link will wait for a hello message acknowledgment before resending the hello message. Range: 1 to 10. Default: 4. |
Command Default
The default acknowledgment interval is 4 seconds.
Command Modes
Interface configuration (config-if)
Command History
Usage Guidelines
The frame-relay multilink ack command can be configured only on bundle link interfaces that have been associated with a bundle using the encapsulation frame-relay mfr command.
Both ends of a bundle link send out hello messages at regular intervals. When a peer device receives a hello message, it responds by sending an acknowledgment. This exchange of hello messages and acknowledgments serves as a keepalive mechanism for the link. If the bundle link sends a hello message but does not receive an acknowledgment, it will resend the hello message up to a configured maximum number of times. If the bundle link exhausts the maximum number of retries, the bundle link line protocol is considered down (nonoperational).
The frame-relay multilink ack command setting on the local router is independent of the setting on the peer device.
Examples
The following example shows how to configure the bundle link to wait 6 seconds before resending hello messages:
interface serial0
encapsulation frame-relay MFR0
frame-relay multilink ack 6
Related Commands
frame-relay multilink bandwidth-class
To specify the criterion used to activate or deactivate a Frame Relay bundle, use the frame-relay multilink bandwidth-class command in interface configuration mode. To reset the bandwidth class to the default, use the no form of this command.
frame-relay multilink bandwidth-class [a | b | c [threshold]]
no frame-relay multilink bandwidth-class
Syntax Description
Command Default
Frame Relay bundles use bandwidth class A (single link).
Command Modes
Interface configuration (config-if)
Command History
Usage Guidelines
The frame-relay multilink bandwidth-class command can be configured only on a bundle's main interface. If no bandwidth class is specified by using the frame-relay multilink bandwidth-class command, the Frame Relay bundle uses the class A (single link) criterion.
Examples
The following example shows how to specify the class B (all links) bandwidth class to trigger activation or deactivation of the Frame Relay bundle on MFR interface 0:
interface MFR0
frame-relay multilink bandwidth-class b
The following example shows how to specify the class C (threshold) bandwidth class to trigger activation or deactivation of the Frame Relay bundle on MFR interface 0, where the minimum threshold of links indicating BL_ACTIVATE is 3:
interface MFR0
frame-relay multilink bandwidth-class c 3
Related Commands
frame-relay multilink bid
To assign a bundle identification (BID) name to a multilink Frame Relay bundle, use the frame-relay multilink bid command in interface configuration mode. To reset the name to the default, use the no form of this command.
frame-relay multilink bid name
no frame-relay multilink bid
Syntax Description
Command Default
The BID name is assigned automatically as "mfr" followed by the number assigned to the bundle.
Command Modes
Interface configuration (config-if)
Command History
Usage Guidelines
This command can be entered only on the multilink Frame Relay bundle interface.
Note You can enter the frame-relay multilink bid command at any time without affecting the current state of the interface; however, the BID will not go into effect until the interface has gone from the down state to the up state. One way to bring the interface down and back up again is by using the shutdown and no shutdown commands in interface configuration mode.
Only one BID is allowed per bundle. A later entry of the frame-relay multilink bid command supersedes prior entries.
The local and peer BIDs do not have to be unique.
Examples
The following example shows how to assign a BID of "bundle1" to the multilink Frame Relay bundle. The previous BID for the bundle was "mfr0."
interface MFR0
frame-relay multilink bid bundle1
Related Commands
frame-relay multilink hello
To configure the interval at which a bundle link will send out hello messages, use the frame-relay multilink hello command in interface configuration mode. To reset this value to the default setting, use the no form of this command.
frame-relay multilink hello seconds
no frame-relay multilink hello
Syntax Description
seconds |
Interval, in seconds, at which a bundle link will send out hello messages. Range: 1 to 180. Default: 10. |
Command Default
The interval is set at 10 seconds.
Command Modes
Interface configuration (config-if)
Command History
Usage Guidelines
The frame-relay multilink hello command can be configured only on bundle link interfaces that have been associated with a bundle using the encapsulation frame-relay mfr command.
Both ends of a bundle link send out hello messages at regular intervals. When a peer device receives a hello message, it responds by sending an acknowledgment. This exchange of hello messages and acknowledgments serves as a keepalive mechanism for the link. If the bundle link sends a hello message but does not receive an acknowledgment, it will resend the hello message up to a configured maximum number of times. If the bundle link exhausts the maximum number of retries, the bundle link line protocol is considered down (nonoperational).
The setting of the hello message interval on the local router is independent of the setting on the peer device.
Examples
The following example shows how to configure a bundle link to send hello messages every 15 seconds:
interface serial0
encapsulation frame-relay MFR0
frame-relay multilink hello 15
Related Commands
frame-relay multilink lid
To assign a bundle link identification (LID) name to a multilink Frame Relay bundle link, use the frame-relay multilink lid command in interface configuration mode. To reset the name to the default, use the no form of this command.
frame-relay multilink lid name
no frame-relay multilink lid
Syntax Description
name |
Bundle link identification (LID) name. The name can be up to 49 characters long. The default is the name of the physical interface. |
Command Default
The name of the physical interface is used as the LID.
Command Modes
Interface configuration (config-if)
Command History
Usage Guidelines
The frame-relay multilink lid command can be configured only on bundle link interfaces that have been associated with a bundle using the encapsulation frame-relay mfr command.
Note You can enter the frame-relay multilink lid command at any time without affecting the current state of the interface; however, the LID will not go into effect until the interface has gone from the down state to the up state. One way to bring the interface down and back up again is by using the shutdown and no shutdown commands in interface configuration mode.
The LID will be used to identify the bundle link to peer devices and to enable the devices to identify which bundle links are associated with which bundles. The LID can also be assigned when the bundle link is created by using the encapsulation frame-relay mfr command with the name argument. If the LID is not assigned, the default LID is the name of the physical interface.
The local and peer LIDs do not have to be unique.
Examples
The following example shows the LID named BL1 assigned to serial interface 0:
interface serial 0
encapsulation frame-relay MFR0
frame-relay multilink lid BL1
Related Commands
frame-relay multilink output-threshold
To configure the number of bytes that a bundle link will transmit before the load-balancing mechanism causes transmission to roll over to the next available link, use the frame-relay multilink output-threshold command in interface configuration mode. To reset this value to the default setting, use the no form of this command.
frame-relay multilink output-threshold bytes
no frame-relay multilink output-threshold
Syntax Description
bytes |
Number of bytes that a bundle link will transmit before the load-balancing mechanism causes transmission to roll over to the next link. Range: 20 to 2147483647. Default: 300. |
Command Default
The number of bytes transmitted is set at 300.
Command Modes
Interface configuration
Command History
Usage Guidelines
Multilink Frame Relay enables load balancing across bundle links that are in the same bundle. When a bundle link has reached its output threshold, transmission rolls over to the next available bundle link in the bundle.
The output threshold mechanism applies only when the bundle interface is using FIFO output queueing. When the bundle interface is not using FIFO output queuing, the algorithm for choosing a bundle link interface for output selects the bundle link that has the empty or shortest output queue.
The default output threshold is 300 bytes. This default value will work effectively if all the bundle links in the bundle have the same speed. To efficiently use bundle links with different speeds, use the frame-relay multilink output-threshold command to adjust the output threshold of the links as appropriate.
The frame-relay multilink output-threshold command can be used on the bundle interface and the bundle links. If the command is used on the bundle interface, the configured output threshold will apply to all bundle links in the bundle. If the command is used on a specific bundle link, the output threshold will overwrite the current setting for that bundle link.
Examples
The following example shows how to configure the bundle link output threshold at 600 bytes. When the bundle link reaches the threshold, transmission will roll over to the next link.
interface serial0
encapsulation frame-relay mfr0
frame-relay multilink output-threshold 600
Related Commands
frame-relay multilink retry
To configure the maximum number of times that a bundle link will resend a hello message while waiting for an acknowledgment, use the frame-relay multilink retry command in interface configuration mode. To reset this value to the default setting, use the no form of this command.
frame-relay multilink retry number
no frame-relay multilink retry
Syntax Description
number |
Maximum number of times that a bundle link will resend a hello message while waiting for an acknowledgment. Range: 1 through 5. Default: 2. |
Command Default
The number of retries is set at 2.
Command Modes
Interface configuration (config-if)
Command History
Usage Guidelines
The frame-relay multilink retry command can be configured only on bundle link interfaces that have been associated with a bundle using the encapsulation frame-relay mfr command.
If the bundle link sends the maximum number of hello messages without receiving an acknowledgment, the bundle link line protocol is considered down (nonoperational).
The maximum number of retries configured on the local router is independent of the maximum number configured on the peer device.
Examples
The following example shows how to configure a bundle link to send a hello message a maximum of three times while waiting for an acknowledgment:
interface serial0
encapsulation frame-relay MFR0
frame-relay multilink retry 3
Related Commands
frame-relay payload-compression
To enable Stacker payload compression on a specified point-to-point interface or subinterface, use the frame-relay payload-compression command in interface configuration mode. To disable payload compression on a specified point-to-point interface or subinterface, use the no form of this command.
frame-relay payload-compression {packet-by-packet | frf9 stac [one-way-negotiation] [ratio level] [skip-zero-sync] [software | hardware-options] | data-stream stac [one-way-negotiation] [ratio level] [software | hardware-options]}
no frame-relay payload-compression {packet-by-packet | frf9 stac | data-stream stac}
Syntax Description
packet-by-packet |
Packet-by-packet payload compression using the Stacker method. |
frf9 stac |
Enables FRF.9 compression using the Stacker method. •If the router contains a CSA1 , compression is performed in the CSA hardware (hardware compression). •If the CSA is not available, compression is performed in the software installed on the VIP22 (distributed compression). •If the VIP2 is not available, compression is performed in the main processor of the router (software compression). |
one-way-negotiation |
(Optional) Enables one-way negotiation. Use this keyword if your router will be negotiating compression with another device that is running Cisco IOS Release 12.1(9) or earlier releases. Later Cisco IOS releases use a two-way handshake by default to negotiate compression. |
ratio level |
(Optional) Sets throughput versus compression ratio. This option is available only with hardware compression. Possible values for the level argument are as follows: high—high compression versus low throughput medium—medium compression versus medium throughput low—low compression versus high throughput (default) |
skip-zero-sync |
(Optional) Causes compression frames to be numbered starting from 1 rather than 0. Use this keyword if your router will be interoperating with a device that conforms to IBM partner conventions. |
software |
(Optional) Specifies that compression is implemented in the Cisco IOS software installed in the main processor of the router. |
hardware-options |
(Optional) Choose one of the following hardware options: caim element-number—Enables the CAIM3 to perform compression. distributed—Specifies that compression is implemented in the software that is installed in a VIP2. If the VIP2 is not available, compression is performed in the main processor of the router (software compression). This option applies only to the Cisco 7500 series routers. This option is not supported with data-stream compression. csa csa_number—Specifies the CSA to use for a particular interface. This option applies only to Cisco 7200 series routers. |
data-stream stac |
Enables data-stream compression using the Stacker method. •If the router contains a CSA, compression is performed in the CSA hardware (hardware compression). •If the CSA is not available, compression is performed in the main processor of the router (software compression). |
1 CSA = compression service adapter 2 VIP2 = second-generation Versatile Interface Processor 3 CAIM = Compression Advanced Interface Module |
Defaults
Payload compression is not enabled.
Command Modes
Interface configuration
Command History
Usage Guidelines
Use the frame-relay payload-compression command to enable or disable payload compression on a point-to-point interface or subinterface. Use the frame-relay map command to enable or disable payload compression on a multipoint interface or subinterface.
We recommend that you shut down the interface before changing encapsulation types. Although shutting down the interface is not required, it ensures that the interface is reset for the new encapsulation.
Data-stream hardware compression is supported on interfaces and virtual circuits (VCs) using Cisco proprietary encapsulation. When the data-stream stac keyword is specified, Cisco encapsulation is automatically enabled. FRF.9 compression is supported on VCs and interfaces that using Internet Engineering Task Force (IETF) encapsulation type. When the frf9 stac keyword is specified, IETF encapsulation is automatically enabled.
Examples
FRF.9 Compression: Example
The following example configures FRF.9 compression for subinterfaces:
interface serial2/0/0
no ip address
no ip route-cache
encapsulation frame-relay
ip route-cache distributed
no keepalive
shutdown
!
interface serial2/0/0.500 point-to-point
ip address 172.16.1.4 255.255.255.0
no cdp enable
frame-relay interface-dlci 500 ietf
frame-relay payload-compression frf9 stac
Data-Stream Compression: Example
The following example shows the configuration of data-stream compression using the frame-relay payload-compression command:
interface serial1/0
encapsulation frame-relay
frame-relay traffic-shaping
!
interface serial1/0.1 point-to-point
ip address 10.0.0.1 255.0.0.0
frame-relay interface-dlci 100
frame-relay payload-compression data-stream stac
Related Commands
|
|
---|---|
frame-relay map |
Defines mapping between a destination protocol address and the DLCI used to connect to the destination address. |
frame-relay policing
To enable Frame Relay policing on all switched PVCs on the interface, use the frame-relay policing command in interface configuration mode. To disable Frame Relay policing, use the no form of this command.
frame-relay policing
no frame-relay policing
Syntax Description
This command has no arguments or keywords.
Defaults
Frame Relay policing is not enabled on switched PVCs.
Command Modes
Interface configuration
Command History
Usage Guidelines
You must enable Frame Relay policing on the incoming interface before you can configure traffic-policing parameters.
You must enable Frame Relay switching, using the frame-relay switching global command, before the frame-relay policing command will be effective on switched PVCs.
Examples
The following example shows the configuration of Frame Relay policing on serial interface 0:
interface serial0
frame-relay policing
Related Commands
frame-relay priority-dlci-group
To prioritize multiple data-link connection identifiers (DLCIs) according to the type of Frame Relay traffic, use the frame-relay priority-dlci-group interface configuration command.
frame-relay priority-dlci-group group-number high-dlci medium-dlci normal-dlci low-dlci
Syntax Description
Defaults
Disabled
Command Modes
Interface configuration
Command History
Usage Guidelines
This command is applied at the interface or subinterface level. Levels in descending order are high, medium, normal, and low.
This command allows you to define different DLCIs for different categories of traffic based on traffic priorities. This command does not itself define priority queueing, but it can be used in conjunction with priority queueing.
A global priority list must be defined, and the associated DLCIs must already be applied to the configuration before you enable this command.
Associate the DLCIs to their prospective groups and define their priority levels. This command is used for multiple DLCIs, where the source and destination endpoints are the same (parallel paths). This command should not be used on a main interface, or point-to-point subinterface, where only a single DLCI is configured.
A DLCI can only be affiliated with a single priority-group; however, there can be multiple groups per interface or subinterface.
You must configure the high-priority and medium-priority DLCI values. If you do not explicitly associate a DLCI for the normal-dlci and low-dlci priority levels, the last DLCI specified in the command line is used as the value of the remaining arguments. For example, the following two commands are equivalent:
frame-relay priority-dlci-group 1 40 50
frame-relay priority-dlci-group 1 40 50 50 50
When you configure static map entries using frame-relay map commands or use Inverse Address Resolution Protocol (ARP), the high-level DLCI is the only DLCI that is mapped. In the example, DLCI 40 is defined as having the highest priority. Therefore, DLCI 40 is the only DLCI that should be included in the frame-relay map command. DLCI 50 should not be included in a frame-relay map command.
Examples
The following example shows the frame-relay priority-dlci-group command configured on a main interface with a static Frame Relay map entry. Note that DLCI 40 is the high-priority DLCI as defined in the frame-relay priority-dlci-group command and the only DLCI included in the frame-relay map command.
interface serial 1
ip address 172.21.177.1 255.255.255.0
encapsulation frame-relay
frame-relay priority-dlci-group 1 40
frame-relay map ip 172.21.177.2 40 broadcast
The following example shows the frame-relay priority-dlci-group command configured on subinterfaces where multiple priority groups are defined. DLCI 40 is the high-priority DLCI in group 1, and DLCI 80 is the high-priority DLCI in group 2.
interface Serial3
no ip address
encapsulation frame-relay
!
interface Serial3.2 multipoint
ip address 172.21.177.1 255.255.255.0
frame-relay interface-dlci 40
frame-relay priority-dlci-group 1 40
!
interface Serial3.3 multipoint
ip address 131.108.177.180 255.255.255.0
frame-relay priority-dlci-group 2 80 90 100 100
frame-relay interface-dlci 80
!
interface Serial 4
no ip address
encapsulation frame-relay
!
interface serial4.1 multipoint
ip address 172.16.1.1 255.255.255.0
frame-relay priority-dlci-group 3 200 210 300 300
frame-relay priority-dlci-group 4 400 410 410 410
frame-relay interface-dlci 200
frame-relay interface-dlci 400
Related Commands
|
|
---|---|
frame-relay map |
Defines mapping between a destination protocol address and the DLCI used to connect to the destination address. |
frame-relay priority-group
Note Effective with Cisco IOS XE Release 2.6, Cisco IOS Release 15.0(1)S, and Cisco IOS Release 15.1(3)T, the frame-relay priority-group command is hidden. Although this command is still available in Cisco IOS software, the CLI interactive Help does not display it if you attempt to view it by entering a question mark at the command line.
This command will be completely removed in a future release, which means that you will need to use the appropriate replacement command (or sequence of commands). For more information (including a list of replacement commands), see the Legacy QoS Command Deprecation feature document in the Cisco IOS XE Quality of Service Solutions Configuration Guide or the Legacy QoS Command Deprecation feature document in the Cisco IOS Quality of Service Solutions Configuration Guide.
Note Effective with Cisco IOS XE Release 3.2S, the frame-relay priority-group command is replaced by a modular QoS CLI (MQC) command (or sequence of MQC commands). For the appropriate replacement command (or sequence of commands), see the Legacy QoS Command Deprecation feature document in the Cisco IOS XE Quality of Service Solutions Configuration Guide.
To assign a priority queue to virtual circuits associated with a map class, use the frame-relay priority-group command in map-class configuration mode. To remove the specified queueing from the virtual circuit and cause it to revert to the default first-come, first-served queueing, use the no form of this command.
frame-relay priority-group list-number
no frame-relay priority-group list-number
Syntax Description
list-number |
Priority-list number to be associated with the specified map class. |
Defaults
If this command is not entered, the default is first-come, first-served queueing.
Command Modes
Map-class configuration
Command History
Usage Guidelines
Use the priority-list commands to define the priority queue. Because only one form of queueing can be associated with a particular map class, subsequent definitions overwrite previous ones.
Examples
The following example configures a map class for a specified DLCI, specifies a priority list for the map class, and then defines the priority list:
interface serial 0
encapsulation frame-relay
frame-relay interface-dlci 100
class pri_vc
map-class frame-relay pri_vc
frame-relay priority-group 1
priority-list 1 protocol ip high
Related Commands
frame-relay pvc
To configure Frame Relay permanent virtual circuits (PVCs) for FRF.8 Frame Relay-ATM Service Interworking, use the frame-relay pvc command in interface configuration mode. To remove the PVC, use the no form of the command.
frame-relay pvc dlci service {transparent | translation} [clp-bit {0 | 1 | map-de}] [de-bit
{0 | 1 | map-clp}] [efci-bit {0 | 1 | map-fecn}] interface atm0 {vpi/vci | vcd}
no frame-relay pvc dlci service {transparent | translation} [clp-bit {0 | 1 | map-de}] [de-bit
{0 | 1 | map-clp}] [efci-bit {0 | 1 | map-fecn}] interface atm0 {vpi/vci | vcd}
Syntax Description
Command Default
No Frame Relay PVCs are configured.
Command Modes
Interface configuration
Command History
Usage Guidelines
This command applies only to Frame Relay-ATM Service Interworking (FRF.8) on the Cisco MC3810. Use this command to create Frame Relay PVCs for association with ATM PVCs when you are configuring FRF.8 Frame Relay-ATM Service Interworking on the Cisco MC3810 multiservice access concentrator.
Examples
The following example shows two Frame Relay PVCs configured on a serial interface of a Cisco MC3810:
frame-relay pvc 222 service translation clp-bit map-de de-bit map-clp efci-bit map-fecn interface ATM0 222/222
frame-relay pvc 925 service transparent clp-bit map-de de-bit map-clp efci-bit map-fecn interface ATM0 92/92
Related Commands
frame-relay qos-autosense
Note Effective with Cisco IOS XE Release 2.6 and Cisco IOS Release 15.1(3)T, the frame-relay qos-autosense command is hidden. Although this command is still available in Cisco IOS software, the CLI interactive Help does not display it if you attempt to view it by entering a question mark at the command line.
This command will be completely removed in a future release, which means that you will need to use the appropriate replacement command (or sequence of commands). For more information (including a list of replacement commands), see the Legacy QoS Command Deprecation feature document in the Cisco IOS XE Quality of Service Solutions Configuration Guide or the Legacy QoS Command Deprecation feature document in the Cisco IOS Quality of Service Solutions Configuration Guide.
Note Effective with Cisco IOS XE Release 3.2S, the frame-relay qos-autosense command is removed.
To enable Enhanced Local Management Interface (ELMI), use the frame-relay qos-autosense command in interface configuration mode. To disable ELMI, use the no form of this command.
frame-relay qos-autosense
no frame-relay qos-autosense
Syntax Description
This command has no arguments or keywords.
Command Default
ELMI is disabled.
Command Modes
Interface configuration (config-if)
Command History
Usage Guidelines
ELMI must be configured on both the Cisco router and the Cisco switch.
Examples
The following example shows how to enable a Frame Relay interface to receive ELMI messages from a Cisco switch that is also configured with ELMI enabled.
interface serial0
no ip address
encapsulation frame-relay
frame-relay lmi-type ansi
frame-relay qos-autosense
interface serial0.1 point-to-point
no ip address
frame-relay interface-dlci 101
Related Commands
frame-relay route
To specify the static route for permanent virtual circuit (PVC) switching, use the frame-relay route command in interface configuration mode. To remove a static route, use the no form of this command.
frame-relay route in-dlci interface out-interface-type out-interface-number out-dlci [voice-encap size]
no frame-relay route in-dlci interface out-interface-type out-interface-number out-dlci [voice-encap size]
Syntax Description
Defaults
No static route is specified.
Command Modes
Interface configuration
Command History
Usage Guidelines
When used with voice, the frame-relay route command is applied on both interfaces. If the voice-encap keyword is specified on one interface, the incoming frames on that interface are defragmented before being routed to the other interface. The outgoing frames on that interface are then fragmented after being routed from the other interface, and before transmission out the interface.
Note Static routes cannot be configured over tunnel interfaces on the Cisco 800 series, 1600 series, and 1700 series platforms. Static routes can only be configured over tunnel interfaces on platforms that have the Enterprise feature set.
Examples
The following example configures a static route that allows packets in DLCI 100 and sends packets out over DLCI 200 on interface serial 2:
frame-relay route 100 interface Serial 2 200
The following example illustrates the commands you enter for a complete configuration that includes two static routes for PVC switching between interface serial 1 and interface serial 2:
interface Serial1
no ip address
encapsulation frame-relay
keepalive 15
frame-relay lmi-type ansi
frame-relay intf-type dce
frame-relay route 100 interface Serial 2 200
frame-relay route 101 interface Serial 2 201
clockrate 2000000
frame-relay svc
To enable Frame Relay switched virtual circuit (SVC) operation on the specified interface, use the frame-relay svc command in interface configuration mode. To disable SVC operation on the specified interface, use the no form of this command.
frame-relay svc
no frame-relay svc
Syntax Description
This command has no arguments or keywords.
Defaults
SVC operation is not enabled.
Command Modes
Interface configuration
Command History
Usage Guidelines
SVC operation can be enabled at the interface level only. Once it is enabled at the interface level, it is enabled on all subinterfaces on the interface. One signaling channel, DLCI 0, is set up for the interface, and all SVCs are controlled from the physical interface.
The first use of this command on the router starts all SVC-related processes on the router. If they are already up and running because SVCs are enabled on another interface, no additional action is taken. These processes are not removed once they are created.
Examples
The following example enables Frame Relay SVC operation on serial interface 0 and starts SVC-related processes on the router:
interface serial 0
ip address 172.68.3.5 255.255.255.0
encapsulation frame-relay
frame-relay lmi-type q933a
frame-relay svc
Related Commands
frame-relay switching
To enable permanent virtual switching (PVC) switching on a Frame Relay DCE device or a Network-to-Network Interface (NNI), use the frame-relay switching command in global configuration mode. To disable switching, use the no form of this command.
frame-relay switching
no frame-relay switching
Syntax Description
This command has no arguments or keywords.
Defaults
Switching is not enabled.
Command Modes
Global configuration
Command History
Usage Guidelines
You must add this command to the configuration file before configuring the routes.
Examples
The following example shows the command that is entered in the configuration file before the Frame Relay configuration commands to enable switching:
frame-relay switching
frame-relay tc
To set the measurement interval for policing incoming traffic when the committed information rate (CIR) is zero, use the frame-relay tc command in map-class configuration mode. To reset the measurement interval for policing, use the no form of this command.
frame-relay tc milliseconds
no frame-relay tc milliseconds
Syntax Description
milliseconds |
Time interval from 10 ms to 10,000 ms, during which incoming traffic cannot exceed committed burst size (Bc) plus excess burst size (Be). |
Defaults
1000 ms
Command Modes
Map-class configuration
Command History
Usage Guidelines
You must enable Frame Relay policing on the incoming interface, using the frame-relay policing interface command, before you can configure traffic-policing parameters.
You must enable Frame Relay switching using the frame-relay switching global command before the frame-relay tc command will be effective on switched PVCs.
When the CIR is greater than 0, Tc is equal to Bc divided by the CIR.
Examples
The following example shows how to configure a policing measurement interval of 800 milliseconds within a map class called "police":
map-class frame-relay police
frame-relay tc 800
Related Commands
frame-relay traffic-rate
To configure all the traffic-shaping characteristics of a virtual circuit (VC) in a single command, use the frame-relay traffic-rate command in map-class configuration mode. To remove the specified traffic shaping from the map class, use the no form of this command.
frame-relay traffic-rate average [peak]
no frame-relay traffic-rate average [peak]
Syntax Description
Defaults
If the peak rate is omitted, the default value used is the average rate configured.
Command Modes
Map-class configuration
Command History
Usage Guidelines
The configured peak and average rates are converted to the equivalent CIR, excess burst size (Be), and committed burst size (Bc) values for use by the VC. When the values are translated, the average rate is used as the CIR. This value is assumed to be for one second. The generated Bc value is 1/8 the CIR value with an interval of 125 milliseconds.
The Be value is derived from the peak rate by subtracting by the average rate. The value of the peak rate minus average rate is assumed to be for one second. The generated Be value is 1/8 the peak rate minus the average rate with an interval of 125 milliseconds. If the peak value is not configured, the peak rate will default to the configured average value, and the Be value will equal 0.
For example, entering the frame-relay traffic-rate 64000 96000 command will result in a CIR of 64000 bps. Assuming 8 intervals of 125 milliseconds, the Bc is 64000/8 or 8000 bits. The Be value is calculated by subtracting 64000 from 96000, so the one-second value is 32000 bits. For each 125-millisecond interval, the Be value is 4000 bits.
Note that the show frame-relay pvc command displays Be and Bc values based on an interval of one second. Internally the values being used are based on an interval of 125 milliseconds. The configuration examples below include the frame-relay traffic-rate command and corresponding show frame-relay pvc command output.
The frame-relay traffic-rate command lets you configure all the traffic-shaping characteristics of a virtual circuit in a single command. Using it is simpler than the alternative of entering the three commands frame-relay cir out, frame-relay be out and frame-relay bc out, but offers slightly less flexibility.
Examples
The following example associates a map class with specified data-link connection identifier (DLCI) and then sets a traffic rate for the map class (and thus for the DLCI):
interface serial 0
frame-relay interface-dlci 100
class fast_vc
map-class frame-relay fast_vc
frame-relay traffic-rate 64000 96000
The following sample output for the show frame-relay pvc command is for the PVC configured in the preceding example. Note that the display shows values for Be and Bc that are based on an interval of one second. Internally the values being used are based on an interval of 125 milliseconds, which means that the actual Be value being used is 4000 bits and the actual Bc value being used is 8000 bits.
Router# show frame-relay pvc 100
PVC Statistics for interface Serial0 (Frame Relay DTE)
DLCI = 100, DLCI USAGE = LOCAL, PVC STATUS = STATIC, INTERFACE = Serial0.100
input pkts 0 output pkts 2314 in bytes 0
out bytes 748080 dropped pkts 0 in pkts dropped 0
out pkts dropped 0 out bytes dropped 0
in FECN pkts 0 in BECN pkts 0 out FECN pkts 0
out BECN pkts 0 in DE pkts 0 out DE pkts 0
out bcast pkts 2308 out bcast bytes 747792
pvc create time 1d16h, last time pvc status changed 1d16h
cir 64000 bc 64000 be 32000 byte limit 5000 interval 125
mincir 32000 byte increment 1000 Adaptive Shaping none
pkts 12 bytes 3888 pkts delayed 0 bytes delayed 0
shaping inactive
traffic shaping drops 0
Queueing strategy:fifo
Output queue 0/40, 0 drop, 0 dequeued
Related Commands
frame-relay traffic-shaping
To enable both traffic shaping and per-virtual-circuit queueing for all permanent virtual circuits (PVCs) and switched virtual circuits (SVCs) on a Frame Relay interface, use the frame-relay traffic-shaping command in interface configuration mode. To disable traffic shaping and per-virtual-circuit queueing, use the no form of this command.
frame-relay traffic-shaping
no frame-relay traffic-shaping
Syntax Description
This command has no arguments or keywords.
Defaults
Frame Relay traffic shaping is not enabled.
Command Modes
Interface configuration
Command History
Usage Guidelines
For virtual circuits (VCs) for which no specific traffic-shaping or queueing parameters are specified, a set of default values are used. The default queueing is performed on a first-come, first-served basis.
The default committed information rate (CIR) of 56K will apply in the following situations:
•When traffic shaping is enabled (by using the frame-relay traffic-shaping command), but a map- lass is not assigned to the VC
•When traffic shaping is enabled (by using the frame-relay traffic-shaping command) and a map class is assigned to the VC, but traffic-shaping parameters have not been defined in the map-class
Frame Relay traffic shaping is not effective for Layer 2 PVC switching using the frame-relay route command.
Examples
The following example enables both traffic shaping and per-virtual circuit queueing:
frame-relay traffic-shaping
Related Commands
frame-relay traps-maximum dlci-status-change
To change the maximum number of frDLCIStatusChange traps that Frame Relay generates at linkup or when receiving LMI Full Status messages, use the frame-relay traps-maximum dlci-status-change command in interface configuration mode. To disable any limit on the number of traps, use the no form of this command.
frame-relay traps-maximum dlci-status-change traps
no frame-relay traps-maximum dlci-status-change
Syntax Description
traps |
Number of traps. |
Command Default
Enabled (and the maximum number of traps is equal to the maximum number of trap events specified for the SNMP server message queue).
Command Modes
Interface configuration (config-if)
Command History
Usage Guidelines
You should set the maximum number of traps based on the number of PVCs on the interface as well as on the SNMP server message queue length. A low number on an interface with many PVCs can be reached quickly, which can cause a large number of traps to be dropped. Also, you should set this number smaller than the SNMP server message queue length (which is specified by the snmp-server queue-length command, which has a default of 10 traps).
The traps counter for this command is reset when a keepalive message is exchanged on the Frame Relay interface.
Note Frame Relay frDLCIStatusChange traps are not generated when the line status or line protocol status of an interface changes to down.
This command does not restrict traps caused by individual circuit status changes.
Examples
The following example sets a maximum of 256 traps on serial interface 3/3:
Router> enable
Password:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# interface serial 3/3
Router(config-if)# encapsulation frame-relay
Router(config-if)# frame-relay traps-maximum 256
Router(config-if)# end
Related Commands
frame-relay vc-bundle
To create a Frame Relay permanent virtual circuit (PVC) bundle (if the bundle does not already exist) and to enter Frame Relay VC-bundle configuration mode, use the frame-relay vc-bundle command in interface configuration mode. To remove a Frame Relay PVC bundle, use the no form of this command.
frame-relay vc-bundle vc-bundle-name
no frame-relay vc-bundle vc-bundle-name
Syntax Description
vc-bundle-name |
Name of the Frame Relay PVC bundle. |
Command Default
A Frame Relay PVC bundle is not created.
Command Modes
Interface configuration
Command History
Usage Guidelines
Use this command to create a unique Frame Relay PVC bundle (if one has not already been created using the frame-relay map command). You can also use this command to enter Frame Relay VC-bundle configuration mode, so that you can configure PVC bundle attributes and PVC bundle members.
Examples
The following example creates a Frame Relay PVC bundle named MAIN-1:
interface serial 0
frame-relay vc-bundle MAIN-1
Related Commands
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frame-relay map |
Defines mapping between a destination protocol address and the DLCI or Frame Relay PVC bundle that connects to the destination address. |
fr-atm connect dlci
To connect a Frame Relay data-link connection identifier (DLCI) to an ATM virtual circuit descriptor for FRF.5 Frame Relay-ATM Interworking (currently available only for the Cisco MC3810), use the fr-atm connect dlci interface configuration command. The encapsulation type of the current interface must be Frame Relay or Frame Relay 1490 Internet Engineering Task Force (IETF). To remove the DLCI-to-VCD connection, use the no form of this command.
fr-atm connect dlci dlci atm-interface [pvc name | [vpi/]vci] [clp-bit {map-de | 0 | 1}] [de-bit {no-map-clp | map-clp}]
no fr-atm connect dlci dlci atm-interface [pvc name | [vpi/]vci] [clp-bit {map-de | 0 | 1}] [de-bit {no-map-clp | map-clp}]
Syntax Description
Defaults
No Frame Relay-ATM connection is configured.
Command Modes
Interface configuration
Command History
Usage Guidelines
This command only applies to Frame Relay-ATM Network Interworking (FRF.5) on the Cisco MC3810.
Note The Cisco MC3810 provides only network interworking (FRF.5). The Cisco MC3810 can be used with service interworking (FRF.8), which is provided by the carrier's ATM network equipment.
Examples
The following example configures a Frame Relay-ATM Interworking connection on FR-ATM interface 20, in which Frame Relay DLCI 100 is connected to ATM VPI/VCI 100/200 for ATM interface 0:
interface fr-atm 20
fr-atm connect dlci 100 atm0 100/200 clp-bit map-de de-bit map-clp
The following example configures a Frame Relay-ATM Interworking connection on FR-ATM interface 10, in which Frame Relay DLCI 150 is connected to ATM VPI/VCI 0/150 for ATM interface 0:
interface fr-atm 10
fr-atm connect dlci 150 atm0 0/150 clp-bit map-de de-bit map-clp
Related Commands
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interface fr-atm |
Creates a Frame Relay-ATM Interworking interface on the Cisco MC3810 multiservice concentrator. |