Document ID: 50104
Contents
Introduction
Prerequisites
Requirements
Components Used
Conventions
FRSM-8T1-to-FRSM-8T1 Frame Relay-Frame Relay DAX Connection
Network Diagram
Configuring the FRSM Interfaces
Configuring the Router Interface
Building the FRSM Connections
Verifying the Configuration
Caveats
CESM-8T1-to-CESM-8T1 SDT DAX Connection
Network Diagram
Configuring the CESM Interfaces
Configuring the Router Interfaces
Building the CESM-to-CESM SDT Connections
Verifying the Configuration
Caveats
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Introduction
All the configuration examples in this section illustrate designs where data enters and leaves a Service Module, gets switched on the local Processor Switching Module (PXM), and leaves and enters another Service Module on the same MGX 8250 shelf.
This document is part four of a six document set:
-
Service Module-to-Service Module DAX Connections
Prerequisites
Requirements
There are no specific requirements for this document.
Components Used
The information in this document is based on these software and hardware versions described the MGX 8250/8230 Configuration Cookbook Introduction.
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.
Conventions
For more information on document conventions, refer to the Cisco Technical Tips Conventions.
FRSM-8T1-to-FRSM-8T1 Frame Relay-Frame Relay DAX Connection
In this example, IP connectivity is established between a Cisco 3620 router and a Cisco 2621 router. The T1 WAN interface card (WIC) (serial 0/0) is connected on the Cisco 3620 to physical line 1 on the Frame Relay Service Module (FRSM)-8T1 in slot 11 of the MGX 8250. The 12-in-1 serial WIC is connected to the Cisco 2621 through a V.35 cable into a channel service unit/data service unit (CSU/DSU). The CSU/DSU maps the V.35 interface to timeslots 1 through 6. The T1 line from the CSU is connected to physical line 2 on the same FSRM-8T1.
Note: To find additional information on the commands used in this document, use the Command Lookup Tool ( registered customers only) .
Network Diagram
This document uses this network setup:
Configuring the FRSM Interfaces
In order to configure the FRSM interfaces, you need to enable the physical lines, enable logical ports on the lines, and adjust the parameters as necessary. Gang of Four Local Management Interface (LMI) will be used on both ports with Enhanced LMI (ELMI) enabled only on port 10.
mgx8250b.1.11.FRSM.a > addln 1
mgx8250b.1.11.FRSM.a > addln 2
mgx8250b.1.11.FRSM.a > dspln 1
LineNum: 1
LineConnectorType: RJ-48
LineType: dsx1ESF
LineEnable: Enabled
LineCoding: dsx1B8ZS
LineLength: 0-131 ft
LineXmtClockSource: LocalTiming
LineLoopbackCommand: NoLoop
LineSendCode: NoCode
LineUsedTimeslotsBitMap: 0x3f
LineLoopbackCodeDetection: codeDetectDisabled
LineBertEnable: Disable
mgx8250b.1.11.FRSM.a > dspln 2
LineNum: 2
LineConnectorType: RJ-48
LineType: dsx1ESF
LineEnable: Enabled
LineCoding: dsx1B8ZS
LineLength: 0-131 ft
LineXmtClockSource: LocalTiming
LineLoopbackCommand: NoLoop
LineSendCode: NoCode
LineUsedTimeslotsBitMap: 0x3f
LineLoopbackCodeDetection: codeDetectDisabled
LineBertEnable: Disable
Syntax : addport "port_num line_num ds0_speed begin_slot num_slot port_type"
port number -- values ranging from 1-192 are accepted for T1 and 1-248 for E1
line number -- value ranging from 1 to 8
DS0 speed -- 1 for 56K, 2 for 64K
beginning slot -- beginning time slot in 1 base
number of slot -- number of DS0 time slots assigned to
port type -- values 1-3, 1=frame relay, 2=FUNI mode-1a, 3=frForward
mgx8250b.1.11.FRSM.a > addport 10 1 2 1 6 1
mgx8250b.1.11.FRSM.a > addport 20 2 2 1 6 1
Syntax : cnfport "portNum lmiSig asyn ELMI T391 T392 N391 N392 N393"
port number -- values ranging from 1-192 are accepted for T1 and 1-248 for E1
LMI signaling -- (N)one (S)trataLMI au-AnnexAUNI
du-AnnexDUNI an-AnnexANNI dn-AnnexDNNI
asyn UPD/UFS -- (UPD = Update Status, UFS = Unsolicited Full Status)
(n or 1) = both dis, (y or 2) = UPD en, 3 = UFS en, 4 = both en
Enhanced LMI -- (N or n) disable (Y or y) enable
T391 timer -- value ranging from 5 to 30 sec.
T392 timer -- value ranging from 5 to 30 sec.
N391 counter -- value ranging from 1 to 255
N392 counter -- value ranging from 1 to 10
N393 counter -- value ranging from 1 to 10, greater than N392
mgx8250b.1.11.FRSM.a > cnfport 10 S n y
mgx8250b.1.11.FRSM.a > cnfport 20 s n n
mgx8250b.1.11.FRSM.a > dspports
Port Ena/Speed EQServ SignalType T391 T392 N391 N392 N393 Type Alarm ELMI
Ratio
-------- --- ----- ------ ------------ ---- ---- ---- ---- ---- -------- ----- ----
11.1.10 Mod/ 384k 1 StrataLMI 10 15 6 3 4 frameRel No On
11.2.20 Mod/ 384k 1 StrataLMI 10 15 6 3 4 frameRel No Off
Number of ports: 2
PortDs0UsedLine1: 0x0000003f
PortDs0UsedLine2: 0x0000003f
PortDs0UsedLine3: 0x00000000
PortDs0UsedLine4: 0x00000000
PortDs0UsedLine5: 0x00000000
PortDs0UsedLine6: 0x00000000
PortDs0UsedLine7: 0x00000000
PortDs0UsedLine8: 0x00000000
PortNumNextAvailable: 11
Configuring the Router Interface
For the router interface, supply the appropriate physical, data-link, and network layer parameters. On the wsw-3620b, the Frame Relay encapsulation has been configured for the interface as Internet Engineering Task Force (IETF), but the particular data-link connection identifier (DLCI) is configured with the Cisco encapsulation. The Frame Relay interface on the Cisco 2621 uses the default setting.
/**WSW-3620B**/ wsw-3620b# conf t Enter configuration commands, one per line. End with CNTL/Z. wsw-3620b(config)# int s 0/0 wsw-3620b(config-if)# service-module T1 clock source line wsw-3620b(config-if)# service-module T1 framing esf wsw-3620b(config-if)# service-module T1 linecode b8zs wsw-3620b(config-if)# service-module T1 timeslots 1-6 speed 64 wsw-3620b(config-if)# encap frame ietf wsw-3620b(config-if)# frame-relay qos-autosense wsw-3620b(config-if)# int serial 0/0.410 point wsw-3620b(config-subif)# ip addr 10.97.220.1 255.255.255.0 wsw-3620b(config-subif)# fram interface-dlci 212 cisco wsw-3620b(config-fr-dlci)# exit wsw-3620b(config-if)# no shut wsw-3620b(config-if)# ^Z /**WSW-2621B**/ wsw-2621b# conf t Enter configuration commands, one per line. End with CNTL/Z. wsw-2621b(config)# int s 0/1 wsw-2621b(config-if)# encap frame wsw-2621b(config-if)# int s 0/1.410 point wsw-2621b(config-subif)# ip addr 10.97.220.2 255.255.255.0 wsw-2621b(config-if)# fram interface-dlci 212 wsw-2621b(config-if)# no shut wsw-2621b(config-if)# ^Z
Building the FRSM Connections
Even though both sides of the connection terminate on the same FRSM card, the PXM still needs to switch the cells. Here, the connection is configured for Frame Relay/ATM network interworking.
/** Slave Side**/
Syntax : addcon "port dlci cir chan_type [CAC] [Controller_Type] [mastership] [remoteConnId]"
port number -- values ranging from 1-192 are accepted for T1 and 1-248 for E1
DLCI number -- value ranging from 0 to 1023
committed rate -- 0-1536000 bps for T1; 0-2048000 bps for E1
chan type -- values 1-5, 1=NIW 2=SIW-transparent 3=SIW-xlation 4=FUNI 5=frForward
CAC -- Connection Admission Control (optional); 1 = enable, 2 = disable (default)
Controller Type (Signalling) -- 1: PVC (PAR) - Default , 2: SPVC (PNNI)
mastership -- 1 for master, 2 for slave
Remote end Connection ID -- Format :
NodeName.SlotNo.PortNo.Dlci OR
NodeName.SlotNo.PortNo.ControllerId.Dlci for FR end point OR
NodeName.SlotNo.PortNo.VPI.VCI for ATM end point.
Where controller ID can be 1(PAR),2(PNNI),3(TAG)
mgx8250b.1.11.FRSM.a > addcon 20 212 256 1 2 1 2 mgx8250b.11.10.212
Local Connection ID is : mgx8250b.11.20.0.212
/** Master Side **/
mgx8250b.1.11.FRSM.a > addcon 10 212 256 1 2 1 1 mgx8250b.11.20.212
mgx8250b.1.11.FRSM.a > dspcons
Line ConnId Chan EQ I/EQDepth I/EQDEThre I/EECNThre Fst/ DE Type Alarm
---- --------------------- ---- -- ----- ----- ----- ----- ----- ----- --- --- ----- -----
2 mgx8250b.11.20.0.212 37 2 65535/65535 32767/32767 6553/6553 Dis/Dis NIW No
1 mgx8250b.11.10.0.212 38 2 65535/65535 32767/32767 6553/6553 Dis/Dis NIW No
Syntax : cnfchanpol "chan_num cir bc be ibs detag egrat"
channel number -- value ranging from 16 to 1015
committed rate -- 0-1536000 bps for T1, 0-2048000 bps for E1
committed burst -- 0-65535 in bytes
excess burst -- 0-65535 in bytes
initial burst -- 0-65535 in bytes. Less or equal to Bc
DE bit tagging -- 1 for enable, 2 for disable
Egress Service Rate -- 0-1536000 bps for T1, 0-2048000 bps for E1
mgx8250b.1.11.FRSM.a > cnfchanpol 37 256 32000 8000 8000 1 384000
mgx8250b.1.11.FRSM.a > cnfchanpol 38 256 32000 8000 8000 1 384000
mgx8250b.1.11.FRSM.a > dspcon 10.212
ChanNum: 38
ChanRowStatus: Mod
ChanPortNum: 10
ChanDLCI: 212
EgressQSelect: 2
IngressQDepth: 65535
IngressQDEThresh: 32767
IngressQECNThresh: 6553
EgressQDepth: 65535
EgressQDEThresh: 32767
EgressQECNThresh: 6553
DETaggingEnable: Enabled
CIR: 256
Bc: 32000
Be: 8000
IBS: 8000
ForeSightEnable: Disabled
QIR: 0
MIR: 0
PIR: 0
ChanLocalRemoteLpbkState: Disabled
ChanTestType: TestOff
ChanTestState: NotInProgress
ChanRTDresult: 65535 ms
ChanType: NIW
ChanFECNmap: setEFCIzero
ChanDEtoCLPmap: mapCLP
ChanCLPtoDEmap: mapDE
ChanFrConnType: PVC
ChanIngrPercentUtil: 100
ChanEgrPercentUtil: 100
ChanEgrSrvRate: 384000
ChanOvrSubOvrRide: Enabled
ChanLocalVpi: 0
ChanLocalVci: 212
ChanLocalNSAP: 6d6778383835306200000000000000000b000a00
ChanRemoteVpi: 0
ChanRemoteVci: 212
ChanRemoteNSAP: 6d6778383835306200000000000000000b001400
ChanMastership: Master
ChanVpcFlag: Vcc
ChanConnServiceType: ATFR
ChanRoutingPriority: 1
ChanMaxCost: 255
ChanRestrictTrunkType: No Restriction
ChanConnPCR: 0
ChanConnMCR: 0
ChanConnPercentUti: 100
mgx8250b.1.11.FRSM.a > dspcon 20.212
ChanNum: 37
ChanRowStatus: Mod
ChanPortNum: 20
ChanDLCI: 212
EgressQSelect: 2
IngressQDepth: 65535
IngressQDEThresh: 32767
IngressQECNThresh: 6553
EgressQDepth: 65535
EgressQDEThresh: 32767
EgressQECNThresh: 6553
DETaggingEnable: Enabled
CIR: 256
Bc: 32000
Be: 8000
IBS: 8000
ForeSightEnable: Disabled
QIR: 0
MIR: 0
PIR: 0
ChanLocalRemoteLpbkState: Disabled
ChanTestType: TestOff
ChanTestState: NotInProgress
ChanRTDresult: 65535 ms
ChanType: NIW
ChanFECNmap: setEFCIzero
ChanDEtoCLPmap: mapCLP
ChanCLPtoDEmap: mapDE
ChanFrConnType: PVC
ChanIngrPercentUtil: 100
ChanEgrPercentUtil: 100
ChanEgrSrvRate: 384000
ChanOvrSubOvrRide: Enabled
ChanLocalVpi: 0
ChanLocalVci: 212
ChanLocalNSAP: 6d6778383835306200000000000000000b001400
ChanRemoteVpi: 0
ChanRemoteVci: 212
ChanRemoteNSAP: 6d6778383835306200000000000000000b000a00
ChanMastership: Slave
ChanVpcFlag: Vcc
ChanConnServiceType: ATFR
ChanRoutingPriority: 1
ChanMaxCost: 255
ChanRestrictTrunkType: No Restriction
ChanConnPCR: 0
ChanConnMCR: 0
ChanConnPercentUti: 100
mgx8250b.1.11.FRSM.a > cc 7
(session redirected)
mgx8250b.1.7.PXM.a > dspcons
This End Node Name Other End Status
11.10.0.212 mgx8250b 11.20.0.212 OK
11.20.0.212 mgx8250b 11.10.0.212 OK
Verifying the Configuration
Use the ping command to verfy that you have a good connection.
wsw-3620b# ping 10.97.220.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.97.220.2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 16/19/20 ms
Caveats
-
Since the FRSM defaults to no signaling and the routers default to Gang of Four (also known as Cisco LMI), the two devices will not communicate until they both agree on a protocol.
-
It is necessary to match the shaping and policing parameters on both the MGX and the BPX to prevent data loss.
CESM-8T1-to-CESM-8T1 SDT DAX Connection
In this example, an analog voice module (AVM)-equipped Cisco MC3810 (wsw-3810l) is configured with three timeslots on the multiflex trunk module (MFT) (controller T1 0) as a voice-group with E&M-immediate-start signaling. The three timeslots are linked to three similarly provisioned timeslots on the digital voice module (DVM) interface (controller T1 1) of a DVM-equipped MC3010 (wsw-3810n) using a structured data transfer (SDT) circuit emulation connection. To demonstrate the connectivity, toggle channel associated signaling (CAS) bits on the channels.
Note: To find additional information on the commands used in this document, use the Command Lookup Tool ( registered customers only) .
Network Diagram
This document uses this network setup:
Configuring the CESM Interfaces
mgx8250b.1.19.CESM.a > addln 1
mgx8250b.1.19.CESM.a > addln 2
Syntax : cnfln "line_num line_code line_len clk_src [E1-signaling]"
line number -- values : 1 - 8
line code -- 2 for B8ZS (T1),
3 for HDB3 (E1),
4 for AMI (T1/E1)
line length -- 10-15 for T1,
8 for E1 with SMB line module,
9 for E1 with RJ48 line module
clock source -- clock source : 1 for loop clock, 2 for local clock
E1 signaling -- CAS: CAS, no CRC; CAS_CRC: CAS, with CRC;
CCS: CCS, no CRC; CCS_CRC: CCS, with CRC;
CLEAR: CLEAR channel
mgx8250b.1.19.CESM.a > cnfln 1 2 10 2
mgx8250b.1.19.CESM.a > cnfln 2 2 10 2
Syntax : addport "port_num line_num begin_slot num_slot port_type"
port number -- values : 1-192 for T1, 1-248 for E1
line number -- values : 1 - 8
beginning slot -- beginning time slot
number of slot -- number of DS0 time slots assigned
port type -- values = 1 - 3, 1: structured 2: Unstructured
3:framingOnVcDisconnect
mgx8250b.1.19.CESM.a > addport 10 1 4 3 1
mgx8250b.1.19.CESM.a > addport 20 2 1 3 1
Configuring the Router Interfaces
/** WSW-3810L**/ wsw-3810l# conf t Enter configuration commands, one per line. End with CNTL/Z. wsw-3810l(config)# network-clock-select 1 t1 0 wsw-3810l(config)# cont t1 0 wsw-3810l(config-controller)# fram esf wsw-3810l(config-controller)# line b8 wsw-3810l(config-controller)# mode cas wsw-3810l(config-controller)# voice-group 1 time 4-6 type e&m-immediate-start /** WSW-3810N**/ wsw-3810n# conf t Enter configuration commands, one per line. End with CNTL/Z. wsw-3810n(config)# network-clock-select 1 t1 1 wsw-3810n(config)# cont t1 1 wsw-3810n(config-controller)# fram esf wsw-3810n(config-controller)# line b8 wsw-3810n(config-controller)# mode cas wsw-3810n(config-controller)# voice-group 1 time 1-3 type e&m-immediate-start wsw-3810n(config)# ^Z
Building the CESM-to-CESM SDT Connections
Syntax : addcon "port_num sig_type partial_fill cond_data cond_signaling
[controller_type [mastership [remoteConnId]]]"
port number -- values : 1-192 for T1, 1-248 for E1
sig_type -- values : 1 - basic, 2 - e1Cas, 3 - ds1SfCas,
4 - ds1EsfCas ;
partialfill -- values : 0 for fully filled, 20 - 47 for E1 Struct,
25 - 47 for T1 Struct, 33 - 47 for T1/E1 Unstruct ;
conddata -- values : always 255 for UDT, 0 - 255 for SDT;
condsig -- values : 0 - 15;
controller type -- 1: PVC/PAR (default), 2: SPVC/PNNI
mastership -- 1: master, 2: slave (default)
remote end connection ID -- Format : NodeName.SlotNo.PortNo.Vpi.Vci
mgx8250b.1.19.CESM.a > addcon 10 4 0 0 0 1 2
Local Connection Id is : mgx8250b.19.10.0.0
mgx8250b.1.19.CESM.a > addcon 20 4 0 0 0 1 1 mgx8250b.19.10.0.0
Syntax : cnfcon "port_num CDVT CLIP bufsize clockmode IdleSuppEnable ForceIdleSuppression"
Port -- A unique Port identifying a connection
CDVT -- Cell delay variation : 125 - 24000 micro seconds for T1
125 - 26000 micro seconds for E1
(in increments of 125)
CLIP -- CellLossIntegrationPeriod : 1000-65535 milli seconds
bufsize -- egress bufsize : 0 to autocompute,
Min value depends on CDVT configured.
Min BufSize = greater { ( CDVT in frames * 2 ) * N,
( CDVT + frames in 2 cells ) * N }
Max for T1 UDT and E1 UDT : 16224 bytes
Max for T1 SDT : 384 * N bytes
Max for E1 SDT : 417 * N bytes
where N is the number of timeslots assigned
in Nx64 connection. and N = 32 for T1/E1 UDT
cbrclkmode -- values : 1 - 3 ; 1:synchronous , 2:srts, 3:adaptive
isenable -- values : 1 - 2 ; 1:disabled , 2:enabled,
exttrigis -- values : 1 - 2 ; 1:disable idle suppression,
2:enable idle suppression
mgx8250b.1.19.CESM.a > cnfcon 10 1000 1000 0 1 1 1
mgx8250b.1.19.CESM.a > cnfcon 20 1000 1000 0 1 1 1
Verifying the Configuration
It is hard to show a circuit emulation connection that is functioning properly. In this case, toggle the signaling bits on one of the DS0s to prove that all data is making it across. You want a connection that does not result in slips, overruns, or underruns on the interface. A T-BERD 950 is handy in testing this recipe.
/** WSW-3810L - Toggle the A-Bit on DS0 (4) **/
wsw-3810l# deb serial int
Serial network interface debugging is on
wsw-3810l# deb dsx1 sig
DSX1 Signaling debugging is on
wsw-3810l# conf t
Enter configuration commands, one per line. End with CNTL/Z.
wsw-3810l(config)# voice-p 0/4
wsw-3810l(config-voiceport)# condition tx-a on
Slot 3 Transmit DS0 (4) ABCD= 8 Timestamp 68117998
wsw-3810l(config-voiceport)# ^Z
wsw-3810l# show contr t1 0
T1 0 is up.
Applique type is Channelized T1
Cablelength is long gain36 0db
No alarms detected.
Slot 3 CSU Serial #09556080 Model TEB HWVersion 4.70 RX level = -0DB
Framing is ESF, Line Code is B8ZS, Clock Source is Line.
Data in current interval (494 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Robbed bit signals state:
timeslots rxA rxB rxC rxD txA txB txC txD
4 0 0 0 0 1 0 0 0
5 0 0 0 0 0 0 0 0
6 0 0 0 0 0 0 0 0
/** WSW-3810N - Before A-Bit Toggled **/
wsw-3810n# deb serial int
Serial network interface debugging is on
wsw-3810n# show contr t1 1
T1 1 is up.
Applique type is Channelized T1
Cablelength is long gain36 0db
No alarms detected.
Slot 4 CSU Serial #06706070 Model TEB HWVersion 4.70 RX level = -0DB
Framing is ESF, Line Code is B8ZS, Clock Source is Line.
Data in current interval (269 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Robbed bit signals state:
timeslots rxA rxB rxC rxD txA txB txC txD
1 0 0 0 0 0 0 0 0
2 0 0 0 0 0 0 0 0
3 0 0 0 0 0 0 0 0
/** WSW-3810N - After A-Bit Toggled **/
wsw-3810n# deb dsx1 sig
DSX1 Signaling debugging is on
Slot 4 Receive DS0 (1) ABCD= 8 Timestamp 1400296
wsw-3810n# show contr t1 1
T1 1 is up.
Applique type is Channelized T1
Cablelength is long gain36 0db
No alarms detected.
Slot 4 CSU Serial #06706070 Model TEB HWVersion 4.70 RX level = -0DB
Framing is ESF, Line Code is B8ZS, Clock Source is Line.
Data in current interval (336 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Robbed bit signals state:
timeslots rxA rxB rxC rxD txA txB txC txD
1 1 0 0 0 0 0 0 0
2 0 0 0 0 0 0 0 0
3 0 0 0 0 0 0 0 0
Caveats
-
Remember to check the clocking. Synchronous Data Transport only supports Synchronous timing.
-
Use the cnfcon command on the Circuit Emulation Service Module (CESM) to adjust cell delay variation tolerance (CDVT) values, buffer size, and partial fill characteristics.
-
If the Cisco 3810 has an MFT and a DVM port, only one can be used to time the bus. Set the other to looped or internal.
-
The debug serial interface command on the Cisco 3810 turns on the robbed-bit display in the show controller t1 output.
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| Updated: Oct 04, 2005 | Document ID: 50104 |