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The ingress router now has two RSVP sessions. The first two lines of the output for<br />

each session confirm the head and tail ends of the RSVP sessions, the LSP pathname,<br />

and that the LSP is operational. For the first session, from 10.0.0.1 to 10.0.0.6, R1is<br />

the ingress router and the output shows that RSVP is using label 103536 on outgoing<br />

packets. Check the transit router to confirm that it is receiving this label:<br />

aviva@R3> show rsvp session detail name R1-to-R6<br />

Transit LSP: 2 sessions<br />

10.0.0.6<br />

From: 10.0.0.1, LSPstate: Up, ActiveRoute: 1<br />

LSPname: R1-to-R6, LSPpath: Primary<br />

Suggested label received: -, Suggested label sent: -<br />

Recovery label received: -, Recovery label sent: 3<br />

Resv style: 1 FF, Label in: 103536, Label out: 3<br />

Time left: 157, Since: Tue Oct 4 14:15:42 2005<br />

Tspec: rate 0bps size 0bps peak Infbps m 20 M 1500<br />

Port number: sender 2 receiver 12077 protocol 0<br />

PATH rcvfrom: 10.1.13.1 (so-0/0/2.0) 1904 pkts<br />

Adspec: received MTU 1500 sent MTU 1500<br />

PATH sentto: 10.1.36.2 (so-0/0/3.0) 1908 pkts<br />

RESV rcvfrom: 10.1.36.2 (so-0/0/3.0) 1904 pkts<br />

Explct route: 10.1.36.2<br />

Record route: 10.1.13.1 10.1.36.2<br />

Total 1 displayed, Up 1, Down 0<br />

Back to the output for R1, the Record route field shows the route being used for this<br />

session as reported in the RSVP RRO:<br />

Record route: 10.1.13.2 10.1.36.2<br />

The RSVP session starts at , which is the local router, then proceeds through<br />

10.1.31.2 to the egress router at 10.1.36.2. This matches the LSP illustrated in<br />

Figure 14-6. The record route on the transit router shows the following:<br />

Record route: 10.1.13.1 10.1.36.2<br />

Here, the transit router, , is placed between the ingress and egress routers,<br />

which again matches the network topology.<br />

See Also<br />

Recipes 14.7 and 14.14<br />

14.7 Viewing Information About RSVP-Signaled LSPs<br />

in the Routing Tables<br />

Problem<br />

You want to check the routing tables to verify that an RSVP-signaled LSP has been<br />

established and is being used.<br />

512 | Chapter 14: MPLS<br />

This is the Title of the Book, eMatter Edition<br />

Copyright © 2008 O’Reilly & Associates, Inc. All rights reserved.

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