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The Resource Reservation Protocol (RSVP) over UDP feature provides the capability for routers to enable neighbor routers to process and send RSVP control packets over UDP. With the implementation of the RSVP over UDP feature, the RSVP protocol stack is enhanced to support processing of RSVP control messages over UDP and raw IP.
You must enable RSVP before you enable the RSVP over UDP feature.
The RSVP stack running on the client host must support sending and receiving the RSVP control messages with the first hop routers they are connected to.
The RSVP over UDP feature addresses the following scenarios:
A router intends to communicate to the first hop router over UDP but not raw IP.
A firewall that is located in between two routers drops raw IP packets due to security concerns, but allows UDP packets.
This task starts RSVP and sets the bandwidth and single-flow limits. By default, RSVP is disabled so that it is backward compatible with systems that do not implement RSVP. To enable RSVP for IP on an interface, perform the following task.
| Command or Action | Purpose | |
|---|---|---|
|
Step 1 |
enable Example: |
Enables privileged EXEC mode.
|
|
Step 2 |
configure terminal Example: |
Enters global configuration mode. |
|
Step 3 |
interface type number Example: |
Configures the specified interface and enters interface configuration mode. |
|
Step 4 |
ip rsvp bandwidth [interface-bandwidth [percent percent-bandwidth | [single-flow-bandwidth ] [sub-pool bandwidth ]]] Example: |
Enables RSVP for IP on an interface. |
|
Step 5 |
end Example: |
Exits interface configuration mode and returns to privileged EXEC mode. |
To enable RSVP over UDP, perform the following task:
| Command or Action | Purpose | |
|---|---|---|
|
Step 1 |
enable Example: |
Enables privileged EXEC mode.
|
|
Step 2 |
configure terminal Example: |
Enters global configuration mode. |
|
Step 3 |
ip rsvp udp neighbor neighbor-IP-address router [vrf vrf-name] Example: |
Configures the RSVP over UDP feature for the neighbor router. |
|
Step 4 |
end Example: |
Returns to privileged EXEC mode. |
The following example shows how to enable RSVP for IP on an interface:
enable
configure terminal
interface fastethernet 0/1
ip rsvp bandwidth 23 54
end
The following example shows how to configure the RSVP over UDP feature on a neighbor router:
enable
configure terminal
ip rsvp udp neighbor 10.1.1.1 router vrf vrf-1
end
|
Related Topic |
Document Title |
|---|---|
|
Cisco IOS commands |
|
|
RSVP commands |
Quality of Service Solutions Command Reference |
|
Overview on RSVP |
Signaling Overview |
|
Standard/RFC |
Title |
|---|---|
|
RFC 2205 |
RSVP—Version 1 Function Specification |
|
RFC 2209 |
RSVP—Version 1 Message Processing Rules |
|
Description |
Link |
|---|---|
|
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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.|
Feature Name |
Releases |
Feature Information |
|---|---|---|
|
RSVP over UDP |
15.2(4)M 15.4(1)S XE 3.11.0 S |
The RSVP over UDP feature allows a router to enable a neighbor router to process and send RSVP control packets over UDP. The following commands were introduced or modified: ip rsvp udp neighbor . |
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