RSVP Application ID Support

Last Updated: January 12, 2012

The RSVP Application ID Support feature introduces application-specific reservations, which enhance the granularity for local policy match criteria so that you can manage quality of service (QoS) on the basis of application type.

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the Feature Information Table at the end of this document.

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Prerequisites for RSVP Application ID Support

You must configure RSVP on one or more interfaces on at least two neighboring routers that share a link within the network.

Restrictions for RSVP Application ID Support

  • RSVP policies apply only to PATH, RESV, PATHERROR, and RESVERROR messages.
  • Merging of global and interface-based local policies is not supported; therefore, you cannot match on multiple policies.

Information About RSVP Application ID Support

Feature Overview of RSVP Application ID Support

How RSVP Functions

Multiple applications such as voice and video need RSVP support. RSVP admits requests until the bandwidth limit is reached. RSVP does not differentiate between the requests and is not aware of the type of application for which the bandwidth is requested.

As a result, RSVP can exhaust the allowed bandwidth by admitting requests that represent just one type of application, causing all subsequent requests to be rejected because of unavailable bandwidth. For example, a few video calls could prevent all or most of the voice calls from being admitted because the video calls require a large amount of bandwidth and not enough bandwidth remains to accommodate the voice calls. With this limitation, you would probably not deploy RSVP for multiple applications especially if voice happens to be one of the applications for which RSVP is required.

The solution is to allow configuration of separate bandwidth limits for individual applications or classes of traffic. Limiting bandwidth per application requires configuring a bandwidth limit per application and having each reservation flag the application to which the reservation belongs so that it can be admitted against the appropriate bandwidth limit.

Application and Sub Application Identity Policy Element for Use with RSVP (IETF RFC 2872) allows for creation of separate bandwidth reservation pools. For example, an RSVP reservation pool can be created for voice traffic, and a separate RSVP reservation pool can be created for video traffic. This prevents video traffic from overwhelming voice traffic.


Note
Before this feature, you could create access control lists (ACLs) that match on the differentiated services code points (DSCPs) of the IP header in an RSVP message. However, multiple applications could use the same DSCP; therefore, you could not uniquely identify applications in order to define separate policies for them.

Sample Solution

The figure below shows a sample solution in which application ID is used. In this example, bandwidth is allocated between the voice and video sessions that are being created by Cisco CallManager (CCM). Video requires much more bandwidth than voice, and if you do not separate the reservations, the video traffic could overwhelm the voice traffic.

CCM has been enhanced to use the RSVP Application ID Support feature. In this example, when CCM makes the RSVP reservation, CCM has the ability to specify whether the reservation should be made against a video RSVP bandwidth pool or a voice RSVP bandwidth pool. If there is not enough bandwidth remaining in the requested pool, even though there is enough bandwidth in the total RSVP allocation, RSVP signals CCM that there is a problem with the reservation. The figure shows some of the signaling and data traffic that is sent during the session setup.

IMAGE MISSING; embedded not referenced

In this scenario, the IP phones and IP video devices do not directly support RSVP. In order to allow RSVP to reserve the bandwidth for these devices, the RSVP agent component in the Cisco IOS router creates the reservation. During the setup of the voice or video session, CCM communicates with the RSVP agent and sends the parameters to reserve the necessary bandwidth.

When you want to make a voice or video call, the device signals CCM. CCM signals the RSVP agent, specifying the RSVP application ID that corresponds to the type of call, which is voice or video in this example. The RSVP agents establish the RSVP reservation across the network and tell CCM that the reservation has been made. CCM then completes the session establishment, and the Real-Time Transport Protocol (RTP) traffic streams flow between the phones (or video devices). If the RSVP agents are unable to create the bandwidth reservations for the requested application ID, they communicate that information back to CCM, which signals this information back to you.

Global and Per-Interface RSVP Policies

You can configure RSVP policies globally and on a per-interface basis. You can also configure multiple global policies and multiple policies per interface.

Global RSVP policies restrict how much RSVP bandwidth a router uses regardless of the number of interfaces. You should configure a global policy if your router has CPU restrictions, one interface, or multiple interfaces that do not require different bandwidth limits.

Per-interface RSVP policies allow you to configure separate bandwidth pools with varying limits so that no one application, such as video, can consume all the RSVP bandwidth on a specified interface at the expense of other applications, such as voice, which would be dropped. You should configure a per-interface policy when you need greater control of the available bandwidth.

How RSVP Policies Are Applied

RSVP searches for policies whenever an RSVP message is processed. The policy tells RSVP if any special handling is required for that message.

If your network configuration has global and per-interface RSVP policies, the per-interface policies are applied first meaning that RSVP looks for policy-match criteria in the order in which the policies were configured. RSVP searches for policy-match criteria in the following order:

  • Nondefault interface policies
  • Default interface policy
  • Nondefault global policies
  • Global default policy

If RSVP finds no policy-match criteria, it accepts all incoming messages. To change this decision from accept to reject, issue the ip rsvp policy default-reject command.

Preemption

Preemption happens when one reservation receives priority over another because there is insufficient bandwidth in an RSVP pool. There are two types of RSVP bandwidth pools: local policy pools and interface pools. Local policies can be global or interface-specific. RSVP performs admission control against these pools when a RESV message arrives.

If an incoming reservation request matches an RSVP local policy that has an RSVP bandwidth limit (as configured with the maximum bandwidth group submode command) and that limit has been reached, RSVP tries to preempt other lower-priority reservations admitted by that policy. When there are too few of these lower-priority reservations, RSVP rejects the incoming reservation request. Then RSVP looks at the interface bandwidth pool that you configured by using the ip rsvp bandwidth command. If that bandwidth limit has been reached, RSVP tries to preempt other lower-priority reservations on that interface to accommodate the new reservation request. At this point, RSVP does not consider which local policies admitted the reservations. When not enough bandwidth on that interface pool can be preempted, RSVP rejects the new reservation even though the new reservation was able to obtain bandwidth from the local policy pool.

Preemption can also happen when you manually reconfigure an RSVP bandwidth pool of any type to a lower value such that the existing reservations using that pool no longer fit in the pool.

How Preemption Priorities Are Assigned and Signaled

If a received RSVP PATH or RESV message contains preemption priorities (signaled with an IETF RFC 3181 preemption priority policy element inside an IETF RFC 2750 POLICY_DATA object) and the priorities are higher than those contained in the matching local policy (if any), the offending message is rejected and a PATHERROR or RESVERROR message is sent in response. If the priorities are approved by the local policy, they are stored with the RSVP state in the router and forwarded to its neighbors.

If a received RSVP PATH or RESV message does not contain preemption priorities (as previously described) and you issued a global ip rsvp policy preempt command, and the message matches a local policy that contains a preempt-priority command, a POLICY_DATA object with a preemption priority element that contains the local policy's priorities is added to the message as part of the policy decision. These priorities are then stored with the RSVP state in the router and forwarded to neighbors.

Controling Preemption

The ip rsvp policy preempt command controls whether or not a router preempts any reservations when required. When you issue this command, a RESV message that subsequently arrives on an interface can preempt the bandwidth of one or more reservations on that interface if the assigned setup priority of the new reservation is higher than the assigned hold priorities of the installed reservations.

Benefits of RSVP Application ID Support

The RSVP Application ID Support feature provides the following benefits:

  • Allows RSVP to identify applications uniquely and to separate bandwidth pools to be created for different applications so that one application cannot consume all the available bandwidth, thereby forcing others to be dropped.
  • Integrates with the RSVP agent and CCM to provide a solution for call admission control (CAC) and QoS for Voice over IP (VoIP) and video conferencing applications in networks with multitiered, meshed topologies using signaling protocols such as SCCP to ensure that a single application does not overwhelm the available reserved bandwidth.
  • Functions with any endpoint that complies with RFC 2872 or RFC 2205.

How to Configure RSVP Application ID Support

You can configure application IDs and local policies to use with RSVP-aware software programs such as CCM or to use with non-RSVP-aware applications such as static PATH and RESV messages.

Configuring RSVP Application IDs and Local Policies for RSVP-Aware Software Programs

This section contains the following procedures:


Note
The following two local policy configuration procedures are optional; however, you must choose one or both.

Configuring an Application ID

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    ip rsvp policy identity alias policy-locator locator

4.    Repeat Step 3 as needed to configure additional application IDs.

5.    end


DETAILED STEPS
  Command or Action Purpose
Step 1
enable


Example:

Router> enable

 

Enables privileged EXEC mode.

  • Enter your password if prompted.
 
Step 2
configure terminal


Example:

Router# configure terminal

 

Enters global configuration mode.

 
Step 3
ip rsvp policy identity alias policy-locator locator


Example:

Router(config)# ip rsvp policy identity rsvp-voice policy-locator APP=Voice

 

Defines RSVP application IDs to use as match criteria for local policies.

  • Enter a value for the aliasargument, which is a string used within the router to reference the identity in RSVP configuration commands and show displays. The string can have as many as 64 printable characters (in the range 0x20 to 0x7E).
Note    If you use the " " or ? characters as part of the alias or locator string itself, you must type the CTRL/V key sequence before entering the embedded " " or ? characters. The alias is never transmitted to other routers.
  • Enter a value for the locator argument, which is a string that is signaled in RSVP messages and contains application IDs usually in X.500 Distinguished Name (DN) format. This can also be a regular expression. For more information on regular expressions, see the Configuring an Application ID section.
 
Step 4
Repeat Step 3 as needed to configure additional application IDs. 

Defines additional application IDs.

 
Step 5
end


Example:

Router(config)# end

 

Exits global configuration mode and returns to privileged EXEC mode.

 
What to Do Next

Configure a local policy globally, on an interface, or both.

Configuring a Local Policy Globally

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    ip rsvp policy local {ac l acl1 [acl2...acl8] | default | identity alias1 [alias2...alias4] | origin-as as1 [as2...as8]}

4.    Repeat Step 3 as needed to configure additional local policies.

5.    {accept | forward [all | path| path-error | resv| resv-error] | default | exit | fast-reroute | local-override | maximum [bandwidth [group x] [single y] | senders n]| preempt-priority [traffic-eng x] setup-priority [hold-priority]}

6.    Repeat Step 5 as needed to configure additional submode commands.

7.    end


DETAILED STEPS
  Command or Action Purpose
Step 1
enable


Example:

Router> enable

 

Enables privileged EXEC mode.

  • Enter your password if prompted.
 
Step 2
configure terminal


Example:

Router# configure terminal

 

Enters global configuration mode.

 
Step 3
ip rsvp policy local {ac l acl1 [acl2...acl8] | default | identity alias1 [alias2...alias4] | origin-as as1 [as2...as8]}


Example:

Router(config)# ip rsvp policy local identity rsvp-voice

 

Creates a local policy to determine how RSVP resources are used in a network and enters local policy configuration mode.

  • Enter the identity alias1 keyword and argument combination to specify an application ID alias.
 
Step 4
Repeat Step 3 as needed to configure additional local policies. 

(Optional) Configures additional local policies.

 
Step 5
{accept | forward [all | path| path-error | resv| resv-error] | default | exit | fast-reroute | local-override | maximum [bandwidth [group x] [single y] | senders n]| preempt-priority [traffic-eng x] setup-priority [hold-priority]}

Example:

Router(config-rsvp-policy-local)# forward all

 

(Optional) Defines the properties of the local policy that you are creating. (These are the submode commands.)

Note    This is an optional step. An empty policy rejects everything, which may be desired in some cases.

See the ip rsvp policy local command for more detailed information on submode commands.

 
Step 6
Repeat Step 5 as needed to configure additional submode commands. 

(Optional) Configures additional submode commands.

 
Step 7
end


Example:

Router(config-rsvp-policy-local)# end

 

Exits local policy configuration mode and returns to privileged EXEC mode.

 

Configuring a Local Policy on an Interface

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    interface type number

4.    Repeat Step 3 as needed to configure additional interfaces.

5.    ip rsvp bandwidth [interface-kbps] [single-flow-kbps]

6.    Repeat Step 5 as needed to configure bandwidth for additional interfaces.

7.    ip rsvp policy local {ac l acl1 [acl2...acl8] | default | identity alias1 [alias2...alias4] | origin-as as1 [as2...as8]}

8.    Repeat Step 7 as needed to configure additional local policies.

9.    {accept | forward [all | path| path-error | resv| resv-error] | default | exit | fast-reroute | local-override | maximum [bandwidth [group x] [single y] | senders n] | preempt-priority [traffic-eng x] setup-priority [hold-priority]}

10.    Repeat Step 9 as needed to configure additional submode commands.

11.    end


DETAILED STEPS
  Command or Action Purpose
Step 1
enable


Example:

Router> enable

 

Enables privileged EXEC mode.

  • Enter your password if prompted.
 
Step 2
configure terminal


Example:

Router# configure terminal

 

Enters global configuration mode.

 
Step 3
interface type number


Example:

Router(config)# interface Ethernet0/0

 

Configures the interface type and number and enters interface configuration mode.

 
Step 4
Repeat Step 3 as needed to configure additional interfaces. 

(Optional) Configures additional interfaces.

 
Step 5
ip rsvp bandwidth [interface-kbps] [single-flow-kbps]

Example:

Router(config-if)# ip rsvp bandwidth 500 500

 

Enables RSVP on an interface.

  • The optional interface-kbps and single-flow-kbps arguments specify the amount of bandwidth that can be allocated by RSVP flows or to a single flow, respectively. Values are from 1 to 1000,000.
 
Step 6
Repeat Step 5 as needed to configure bandwidth for additional interfaces. 

(Optional) Configures bandwidth for additional interfaces.

 
Step 7
ip rsvp policy local {ac l acl1 [acl2...acl8] | default | identity alias1 [alias2...alias4] | origin-as as1 [as2...as8]}


Example:

Router(config-if)# ip rsvp policy local identity rsvp-voice

 

Creates a local policy to determine how RSVP resources are used in a network.

  • Enter the identity alias1 keyword argument combination to specify an application ID alias.
 
Step 8
Repeat Step 7 as needed to configure additional local policies. 

(Optional) Configures additional local policies.

 
Step 9
{accept | forward [all | path| path-error | resv| resv-error] | default | exit | fast-reroute | local-override | maximum [bandwidth [group x] [single y] | senders n] | preempt-priority [traffic-eng x] setup-priority [hold-priority]}

Example:

Router(config-rsvp-policy-local)# forward all

 

(Optional) Defines the properties of the local policy that you are creating and enters local policy configuration mode. (These are the submode commands.)

Note    This is an optional step. An empty policy rejects everything, which may be desired in some cases.

See the ip rsvp policy localcommand for more detailed information on submode commands.

 
Step 10
Repeat Step 9 as needed to configure additional submode commands. 

(Optional) Configures additional submode commands.

 
Step 11
end


Example:

Router(config-rsvp-policy-local)# end

 

Exits local policy configuration mode and returns to privileged EXEC mode.

 

Configuring RSVP Application IDs with Static Senders and Receivers for Non-RSVP-Aware Software Programs

Configuring an Application ID

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    ip rsvp policy identity alias policy-locator locator

4.    Repeat step 3 to configure additional application IDs.

5.    end


DETAILED STEPS
  Command or Action Purpose
Step 1
enable


Example:

Router> enable

 

Enables privileged EXEC mode.

  • Enter your password if prompted.
 
Step 2
configure terminal


Example:

Router# configure terminal

 

Enters global configuration mode.

 
Step 3
ip rsvp policy identity alias policy-locator locator


Example:

Router(config)# ip rsvp policy identity rsvp-voice policy-locator "APP=Voice"

 

Defines RSVP application IDs to use as match criteria for local policies.

  • Enter a value for the aliasargument, which is a string used within the router to reference the identity in RSVP configuration commands and show displays. The string can have as many as 64 printable characters (in the range 0x20 to 0x7E).
Note    If you use the " " or ? characters as part of the alias or locator string itself, you must type the CTRL/V key sequence before entering the embedded " " or ? characters. The alias is never transmitted to other routers.
  • Enter a value for the locator argument, which is a string that is signaled in RSVP messages and contains application IDs usually in X.500 Distinguished Name (DN) format.
Note    Repeat this step as needed to configure additional application IDs.
 
Step 4
Repeat step 3 to configure additional application IDs. 

Configures additional application IDs.

 
Step 5
end


Example:

Router(config)# end

 

Exits global configuration mode and returns to privileged EXEC mode.

 

Configuring a Static Sender with an Application ID

Perform this task to configure a static RSVP sender with an application ID to make the router proxy an RSVP PATH message containing an application ID on behalf of an RSVP-unaware sender application.

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    ip rsvp sender-host session-ip-address sender-ip-address {tcp | udp | ip-protocol} session-d-port sender-s-port bandwidth burst-size [identity alias]

4.    end


DETAILED STEPS
  Command or Action Purpose
Step 1
enable


Example:

Router> enable

 

Enables privileged EXEC mode.

  • Enter your password if prompted.
 
Step 2
configure terminal


Example:

Router# configure terminal

 

Enters global configuration mode.

 
Step 3
ip rsvp sender-host session-ip-address sender-ip-address {tcp | udp | ip-protocol} session-d-port sender-s-port bandwidth burst-size [identity alias]


Example:

Router(config)# ip rsvp sender-host 10.0.0.7 10.0.0.1 udp 1 1 10 10 identity rsvp-voice

 

Enables a router to simulate a host generating RSVP PATH messages.

  • The optional identity alias keyword and argument combination specifies an application ID alias. The string can have as many as 64 printable characters (in the range 0x20 to 0x7E).
Note    If you use the " " or ? characters as part of the alias string itself, you must type the CTRL/V key sequence before entering the embedded " " or ? characters. The alias is never transmitted to other routers.
 
Step 4
end


Example:

Router(config)# end

 

Exits global configuration mode and returns to privileged EXEC mode.

 

Configuring a Static Receiver with an Application ID

Perform this task to configure a static RSVP receiver with an application ID to make the router proxy an RSVP RESV message containing an application ID on behalf of an RSVP-unaware receiver application.


Note
You can also configure a static listener to use with an application ID. If an incoming PATH message contains an application ID and/or a preemption priority value, the listener includes them in the RESV message sent in reply. See the Feature Information for RSVP Application ID Supportfor more information.
SUMMARY STEPS

1.    enable

2.    configure terminal

3.   Do one of the following:

  • ip rsvp reservation-host session-ip-address sender-ip-address {tcp | udp | ip-protocol} session-d-port sender-s-port{ff | se | wf} {rate | load} bandwidth burst-size [identity alias]
  • ip rsvp reservation session-ip-address sender-ip-address {tcp | udp | ip-protocol} session-d-port sender-s-port next-hop-ip-address next-hop-interface {ff | se | wf} {rate | load} bandwidth burst-size[identity alias]

4.    end


DETAILED STEPS
  Command or Action Purpose
Step 1
enable


Example:

Router> enable

 

Enables privileged EXEC mode.

  • Enter your password if prompted.
 
Step 2
configure terminal


Example:

Router# configure terminal

 

Enters global configuration mode.

 
Step 3
Do one of the following:
  • ip rsvp reservation-host session-ip-address sender-ip-address {tcp | udp | ip-protocol} session-d-port sender-s-port{ff | se | wf} {rate | load} bandwidth burst-size [identity alias]
  • ip rsvp reservation session-ip-address sender-ip-address {tcp | udp | ip-protocol} session-d-port sender-s-port next-hop-ip-address next-hop-interface {ff | se | wf} {rate | load} bandwidth burst-size[identity alias]


Example:

Router(config)# ip rsvp reservation-host 10.1.1.1 10.30.1.4 udp 20 30 se load 100 60 identity rsvp-voice



Example:



Example:

Router(config)# ip rsvp reservation 10.1.1.1 0.0.0.0 udp 20 0 172.16.4.1 Ethernet1 wf rate 350 65 identity xyz

 

Enables a router to simulate a host generating RSVP RESV messages.

  • The optional identity alias keyword and argument combination specifies an application ID alias. The string can have as many as 64 printable characters (in the range 0x20 to 0x7E).
Note    If you use the " " or ? characters as part of the alias string itself, you must type the CTRL/V key sequence before entering the embedded " " or ? characters. The alias is never transmitted to other routers.
Note    Use the ip rsvp reservation-host command if the router is the destination or the ip rsvp reservation command to have the router proxy on behalf of a downstream host.
 
Step 4
end


Example:

Router(config)# end

 

Exits global configuration mode and returns to privileged EXEC mode.

 

Verifying the RSVP Application ID Support Configuration

SUMMARY STEPS

1.    enable

2.    show ip rsvp host {senders | receivers} [group-name | group-address]

3.    show ip rsvp policy identity [regular-expression]

4.    show ip rsvp policy local [detail] [interface name] [default| acl acl| origin-as as | identity alias]

5.    show ip rsvp reservation [detail] [filter [destination ip-addr| hostname] [source ip-addr| hostname] [dst-port port] [src-port port]]

6.    show ip rsvp sender [detail] [filter [destination ip-addr| hostname] [source ip-addr| hostname] [dst-port port] [src-port port]]

7.    exit


DETAILED STEPS
  Command or Action Purpose
Step 1
enable


Example:

Router> enable

 

(Optional) Enables privileged EXEC mode.

  • Enter your password if prompted.
Note    Skip this step if you are using the commands in user EXEC mode.
 
Step 2
show ip rsvp host {senders | receivers} [group-name | group-address]


Example:

Router# show ip rsvp host senders

 

Displays specific information for an RSVP host.

Note    Use this command only on routers from which PATH and RESV messages originate.
 
Step 3
show ip rsvp policy identity [regular-expression]


Example:

Router# show ip rsvp policy identity voice100

 

Displays selected RSVP identities in a router configuration.

  • The optional regular-expression argument allows pattern matching on the alias strings of the RSVP identities to be displayed.
Note    For more information on regular expressions, see the Verifying the RSVP Application ID Support Configuration.
 
Step 4
show ip rsvp policy local [detail] [interface name] [default| acl acl| origin-as as | identity alias]


Example:

Router# show ip rsvp policy local identity voice100

 

Displays the local policies currently configured.

  • The optional detail keyword and the optional interface name keyword and argument combination can be used with any of the match criteria.
 
Step 5
show ip rsvp reservation [detail] [filter [destination ip-addr| hostname] [source ip-addr| hostname] [dst-port port] [src-port port]]


Example:

Router# show ip rsvp reservation detail

 

Displays RSVP-related receiver information currently in the database.

  • The optional detail keyword displays additional output with information about where the policy originated as well as which application ID was signaled in the RESV message.
Note    The optional filter keyword is supported in Cisco IOS Releases 12.0S and 12.2S only.
 
Step 6
show ip rsvp sender [detail] [filter [destination ip-addr| hostname] [source ip-addr| hostname] [dst-port port] [src-port port]]


Example:

Router# show ip rsvp sender detail

 

Displays RSVP PATH-related sender information currently in the database.

  • The optional detail keyword displays additional output with information that includes which application ID was signaled in the PATH message.
Note    The optional filter keyword is supported in Cisco IOS Releases 12.0 S and 12.2 S only.
 
Step 7
exit


Example:

Router# exit

 

Exits privileged EXEC mode and returns to user EXEC mode.

 

Configuration Examples for RSVP Application ID Support

Example Configuring RSVP Application ID Support

The four-router network in the figure below contains the following configurations:

Figure 1 Sample Network with Application Identities and Local Policies


Configuring a Proxy Receiver on R4

The following example configures R4 with a proxy receiver to create an RESV message to match the PATH message for the destination 10.0.0.7:

Router# configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)# ip rsvp listener 10.0.0.7 any any reply
 
Router(config)# end

Configuring an Application ID and a Global Local Policy on R3

The following example configures R3 with an application ID called video and a global local policy in which all RSVP messages are being accepted and forwarded:

Router# configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)# ip rsvp policy identity video policy-locator video
Router(config)# ip rsvp policy local identity video
Router(config-rsvp-policy-local)# forward all
Router(config-rsvp-policy-local)# end

Configuring an Application ID and Separate Bandwidth Pools on R2 for Per-Interface Local Policies

The following example configures R2 with an application ID called video, which is a wildcard regular expression to match any application ID that contains the substring video:

Router# configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)# ip rsvp policy identity video policy-locator .*Video.*
Router(config-rsvp-id)# end

The following example configures R2 with a local policy on ingress Ethernet interface 0/0:

Router# configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)# interface Ethernet0/0
Router(config-if)# ip address 10.0.0.2 255.0.0.0
Router(config-if)# no cdp enable
Router(config-if)# ip rsvp bandwidth 200
Router(config-if)# ip rsvp policy local identity video
Router(config-rsvp-policy-local)# maximum senders 10
Router(config-rsvp-policy-local)# maximum bandwidth group 100
Router(config-rsvp-policy-local)# maximum bandwidth single 10
Router(config-rsvp-policy-local)# forward all
Router(config-rsvp-policy-local)# end

The following example configures R2 with a local policy on egress Ethernet interface 3/0:

Router# configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)# interface Ethernet3/0
Router(config-if)# ip address 10.0.0.3 255.0.0.0
Router(config-if)# no cdp enable
Router(config-if)# ip rsvp bandwidth 200
Router(config-if)# ip rsvp policy local identity video
Router(config-rsvp-policy-local)# maximum senders 10
Router(config-rsvp-policy-local)# maximum bandwidth group 100
Router(config-rsvp-policy-local)# maximum bandwidth single 10
Router(config-rsvp-policy-local)# forward all
Router(config-rsvp-policy-local)# end

Note
PATH messages arrive on ingress Ethernet interface 0/0 and RESV messages arrive on egress Ethernet interface 3/0.

Configuring an Application ID and a Static Reservation from R1 to R4

The following example configures R1 with an application ID called video and initiates a host generating a PATH message with that application ID:

Router# configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)# ip rsvp policy identity video policy-locator "GUID=www.cisco.com, APP=Video, VER=1.0"
Router(config)# ip rsvp sender-host 10.0.0.7 10.0.0.1 udp 1 1 10 10 identity video 
Router(config)# end

Example Verifying RSVP Application ID Support

Verifying the Application ID and the Global Local Policy on R3

The following example verifies that a global local policy has been configured on R3 with an application ID called Video:

Router# show ip rsvp policy local detail 
Global:
  Policy for ID(s): Video
    Preemption Scope: Unrestricted.
    Local Override:   Disabled.
    Fast ReRoute:     Accept.
    Handle:           23000404.
                           Accept               Forward
    Path:                  Yes                  Yes
    Resv:                  Yes                  Yes
    PathError:             Yes                  Yes
    ResvError:             Yes                  Yes
                           Setup Priority       Hold Priority
    TE:                    N/A                  N/A  
    Non-TE:                N/A                  N/A  
                           Current              Limit
    Senders:               1                    N/A
    Receivers:             1                    N/A
    Conversations:         1                    N/A
    Group bandwidth (bps): 10K                  N/A                 
    Per-flow b/w (bps):    N/A                  N/A                 
          
          
Generic policy settings:
    Default policy: Accept all
    Preemption:     Disabled

Verifying the Application ID and the Per-Interface Local Policies on R2

The following example verifies that an application ID called Video has been created on R2:

Router# show ip rsvp policy identity 
Alias: Video
  Type:    Application ID
  Locator: .*Video.*

The following example verifies that per-interface local policies have been created on Ethernet interface 0/0 and Ethernet interface 3/0 on R2:

Router# show ip rsvp policy local detail
Ethernet0/0:
  Policy for ID(s): Video
    Preemption Scope: Unrestricted.
    Local Override:   Disabled.
    Fast ReRoute:     Accept.
    Handle:           26000404.
                           Accept               Forward
    Path:                  Yes                  Yes
    Resv:                  Yes                  Yes
    PathError:             Yes                  Yes
    ResvError:             Yes                  Yes
                           Setup Priority       Hold Priority
    TE:                    N/A                  N/A  
    Non-TE:                N/A                  N/A  
                           Current              Limit
    Senders:               1                    10 
    Receivers:             0                    N/A
    Conversations:         0                    N/A
    Group bandwidth (bps): 0                    100K                
    Per-flow b/w (bps):    N/A                  10K                 
          
Ethernet3/0:
  Policy for ID(s): Video
    Preemption Scope: Unrestricted.
    Local Override:   Disabled.
    Fast ReRoute:     Accept.
    Handle:           5A00040A.
                           Accept               Forward
    Path:                  Yes                  Yes
    Resv:                  Yes                  Yes
    PathError:             Yes                  Yes
    ResvError:             Yes                  Yes
                           Setup Priority       Hold Priority
    TE:                    N/A                  N/A  
    Non-TE:                N/A                  N/A  
                           Current              Limit
    Senders:               0                    10   
    Receivers:             1                    N/A
    Conversations:         1                    N/A
    Group bandwidth (bps): 10K                  100K                
    Per-flow b/w (bps):    N/A                  10K                 
Generic policy settings:
    Default policy: Accept all
    Preemption:     Disabled

Note
Notice in the above display that the ingress interface has only its senders counter incremented because the PATH message is checked there. However, the egress interface has its receivers, conversations, and group bandwidth counters incremented because the reservation is checked on the incoming interface, which is the egress interface on R2.

Verifying the Application ID and the Reservation on R1

The following example verifies that a PATH message containing the application ID called Video has been created on R1:

Router# show ip rsvp sender detail
PATH Session address: 10.0.0.7, port: 1. Protocol: UDP
  Sender address: 10.0.0.1, port: 1
     Inbound from: 10.0.0.1
 on interface:
  Traffic params - Rate: 10K bits/sec, Max. burst: 10K bytes
                   Min Policed Unit: 0 bytes, Max Pkt Size 4294967295 bytes
  Path ID handle: 02000402.
  Incoming policy: Accepted. Policy source(s): Default
    Application ID: 'GUID=www.cisco.com, APP=Video, VER=1.0'
  Status: Proxied
  Output on Ethernet0/0. Policy status: Forwarding. Handle: 01000403
    Policy source(s): Default

Note
You can issue the debug ip rsvp dump path and the debug ip rsvp dump resv commands to get more information about a sender and the application ID that it is using.

The following example verifies that a reservation with the application ID called Video has been created on R1:

Router# show ip rsvp reservation detail
 
RSVP Reservation. Destination is 10.0.0.7, Source is 10.0.0.1, 
  Protocol is UDP, Destination port is 1, Source port is 1
  Next Hop is 10.0.0.2, Interface is Ethernet0/0
  Reservation Style is Fixed-Filter, QoS Service is Guaranteed-Rate
  Resv ID handle: 01000405.
  Created: 10:07:35 EST Thu Jan 12 2006
  Average Bitrate is 10K bits/sec, Maximum Burst is 10K bytes
  Min Policed Unit: 0 bytes, Max Pkt Size: 0 bytes
  Status:
  Policy: Forwarding. Policy source(s): Default
    Application ID: 'GUID=www.cisco.com, APP=Video, VER=1.0'

Additional References

The following sections provide references related to the RSVP Application ID Support feature.

Related Documents

Related Topic

Document Title

QoS commands: complete command syntax, command modes, command history, defaults, usage guidelines, and examples

Cisco IOS Quality of Service Solutions Command Reference

QoS configuration tasks related to RSVP

"Configuring RSVP" module

Cisco United Communications Manager (CallManager) and related features

"Overview of Cisco Unified Communications Manager and Cisco IOS Interoperability" module

Regular expressions

"Using the Cisco IOS Command-Line Interface" module

Cisco IOS commands

Cisco IOS Master Commands List, All Releases

Standards

Standard

Title

No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature.

--

MIBs

MIB

MIBs Link

No new or modified MIBs are supported by this feature, and support for existing MIBs has not been modified by this feature.

To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:

http://www.cisco.com/go/mibs

RFCs

RFC

Title

RFC 2205

Resource ReSerVation Protocol (RSVP)

RFC 2872

Application and Sub Application Identity Policy Element for Use with RSVP

RFC 3181

Signaled Preemption Priority Policy Element

RFC 3182

Identity Representation for RSVP

Technical Assistance

Description

Link

The Cisco Support and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies. Access to most tools on the Cisco Support and Documentation website requires a Cisco.com user ID and password.

http://www.cisco.com/cisco/web/support/index.html

Feature Information for RSVP Application ID Support

The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.

Table 1 Feature Information for RSVP Application ID Support

Feature Name

Releases

Feature Information

RSVP Application ID Support

12.4(6)T, 12.2(33)SRB

The RSVP Application ID Support feature introduces application-specific reservations, which enhance the granularity for local policy-match criteria so that you can manage quality of service (QoS) on the basis of application type.

Glossary

ACL-- access control list. An ACL consists of individual filtering rules grouped together in a single list. It is generally used to provide security filtering, although it may be used to provide a generic packet classification facility.

admission control --The process in which an RSVP reservation is accepted or rejected on the basis of end-to-end available network resources.

application identity (ID) --A string that can be inserted in a policy element in a POLICY_DATA object of an RSVP message to identify the application and associate it with the RSVP reservation request, thus allowing routers along the path to make appropriate decisions based on the application information.

autonomous system --A collection of networks that share the same routing protocol and that are under the same system administration.

bandwidth --The difference between the highest and lowest frequencies available for network signals. The term also is used to describe the rated throughput capacity of a given network medium or protocol.

CCM --Cisco CallManager. The software-based, call-processing component of the Cisco IP telephony solution. The software extends enterprise telephony features and functions to packet telephony network devices such as IP phones, media processing devices, Voice-over-IP (VoIP) gateways, and multimedia applications.

DSCP --differentiated services code point. The six most significant bits of the 1-byte IP type of service (ToS) field. The per-hop behavior represented by a particular DSCP value is configurable. DSCP values range between 0 and 63.

policy --Any defined rule that determines the use of resources within the network. A policy can be based on a user, a device, a subnetwork, a network, or an application.

QoS --quality of service. A measure of performance for a transmission system that reflects its transmission quality and service availability.

RSVP --Resource Reservation Protocol. A protocol for reserving network resources to provide quality of service guarantees to application flows.

RSVP agent --Implements a Resource Reservation Protocol (RSVP) agent on Cisco IOS voice gateways that support Cisco CallManager 5.0.

RTP --Real-Time Transport Protocol. An Internet protocol for transmitting real-time data such as voice and video.

router --A network layer device that uses one or more metrics to determine the optimal path along which network traffic should be forwarded. Routers forward packets from one network to another on the basis of network layer information.

TE --traffic engineering. The techniques and processes used to cause routed traffic to travel through the network on a path other than the one that would have been chosen if standard routing methods had been used.

Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1110R)

Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.

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