June 2003
Intermediate to advanced
504 pages
12h 29m
English
Content preview from MPLS and VPN Architectures, Volume IIBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Other Quick Checks
After you have verified that the LSP between PE routers is broken, you should perform a few more quick MPLS-related checks before you go into in-depth MPLS troubleshooting:
Is CEF enabled globally on every router in the path?
You verify proper operation of CEF with the show ip cef summary monitoring command, which should produce a printout similar to the one shown in Example 9-4.
Example 9-4. Correct show ip cef summary Printout
Router#show ip cef summary IP CEF with switching (Table Version 87), flags=0x0 51 routes, 0 reresolve, 0 unresolved (0 old, 0 new) 54 leaves, 30 nodes, 37896 bytes, 90 inserts, 36 invalidations 0 load sharing elements, 0 bytes, 0 references universal per-destination load sharing algorithm, id E2D347E4 ...
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