Configuring the RSVP Message Format

Context

You can adjust object information in RSVP messages by configuring the RSVP message format. In scenarios where an RSVP-TE tunnel is deployed, when devices from other vendors on the RSVP-TE tunnel use different format of RSVP message, you can modify the format of RSVP messages to be sent by the Huawei device to implement interworking.

You can configure the transit and egress nodes to add the down-reason object in an RSVP message to be sent, facilitating fault locating.

Procedure

Configure the formats of objects in an RSVP message.
Perform the following steps on each node of the MPLS TE tunnel:
1. Run system-view
  The system view is displayed.
2. Run mpls
  The MPLS view is displayed.
3. Run mpls rsvp-te send-message { suggest-label | extend-class-type value-length-type | session-attribute without-affinity | down-reason }
  The formats of objects are specified for RSVP messages to be sent.
  
  The configuration guidelines of this command are as follows:
  - If a non-Huawei device requires the suggest-label object in a Path message sent by a Huawei device, specify suggest-label.
  - If a non-Huawei device uses the value-length-type (VLT) encoding format of the extended-class-type object but a Huawei device uses the type-length-value (TLV) encoding format of the extended-class-type object, specify extend-class-type value-length-type.
  - If a non-Huawei device does not support the session-attribute object sent by a Huawei device and the session-attribute object sent by the Huawei device has an affinity attribute, specify session-attribute without-affinity.
  - If you want an ingress to learn RSVP-TE tunnel Down causes of the transit and egress nodes, run the mpls rsvp-te send-message down-reason command.
Configure the format of the Record Route Object (RRO) in a Resv message.
When the format in a Resv message sent by a non-Huawei device connected to the Huawei device is different from that on the Huawei device, run the following command to adjust the format of Resv messages on the Huawei device to be the same as that on the non-Huawei device to implement interworking.

Perform the following configurations on the transit and egress nodes of an MPLS TE tunnel.
1. Run system-view
  The system view is displayed.
2. Run mpls
  The MPLS view is displayed.
3. Run the following commands as required.
  - On a transit node, run the mpls rsvp-te resv-rro transit { { incoming | incoming-with-label } | { routerid | routerid-with-label } | { outgoing | outgoing-with-label } } ^* command.
  - On an egress, run the mpls rsvp-te resv-rro egress { { incoming | incoming-with-label } | { routerid | routerid-with-label } } ^* command.