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mpls egress-capable
Enables/disables all routing modules in the Avici router to operate as egress for LSPs.
Syntax: [no] mpls egress-capable
Description: A network in transition may have some routing modules in an Avici router that do not support MPLS.
An Avici router operating as an MPLS egress node removes the MPLS label before forwarding packets as standard IP traffic. An Avici router containing a single non-MPLS capable module will not perform this critical task when that module contains the outbound interface for a packet received over an MPLS tunnel.
If non-MPLS capable routing modules are installed in the Avici router, the Avici router must be configured as non-egress capable using the no mpls egress-capable command.
This command causes the Avici router to request Penultimate Hop Popping (PHP) service from its neighbors. When PHP is requested, the next-to-last hop removes the MPLS label and forwards the traffic to the egress Avici router as standard IP packets. This enables the Avici router to function as an egress node, even when it contains some non-MPLS capable routing modules.
NOTE PHP prevents the gathering of tunnel statistics at the egress node.
Use the mpls egress-capable command to configure the Avici router to operate as a MPLS egress node. All routing modules installed in the Avici router must be egress-capable. If a routing module is not egress-capable, the interfaces on that module will not come up.
Use the no mpls egress-capable command to configure the Avici router to request PHP services from its neighbors. You must temporarily disable MPLS in order to disable egress capability.
Factory Default: Enabled.
Command Mode: Configuration.
Example: In the following example:
- The no mpls te command disables MPLS for all interfaces on the Avici router.
- The no mpls egress-capable command configures the Avici router to request PHP services from upstream neighbors for all LSPs that terminate in the Avici router.
- The mpls te command enables traffic engineering again.
router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
router(config)#no mpls te isis
router(config-te)#no mpls egress-capable
router(config-te)#end
router(config)#mpls te isis
Related Commands: mpls te
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Avici Systems Inc.
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Source
File Name: TE%20Commands.fm
HTML File Name: TE%20Commands35.html
Last Updated: 12/19/04 at 14:56:07