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Cisco Bug: CSCtf39405 - Back up static route is not installed in the rib when one of LC resets

Last Modified

May 12, 2018

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases


Description (partial)

If ECMP paths more than the platform limit are configured in static and 
and after that when existing ECMP paths are not reachable then the 
excess paths are not being installed.

Initially static config has ECMP paths more than the platform limit and
these are distributed in different LCs (let's say LC1 and LC2)
Say the excess paths are from LC2

Step1. Reload LC1, 
       -When LC1 goes down, path from LC1 will be removed from RIB.
        and excess paths from LC2 will be installed in RIB
       -When LC1 comes up again, RIB will give max path warning for the 
        excess paths from LC1.
       *Till that behavior as per expectation.
Step2. Shutdown LC2.
       -All the paths from the LC2 will be 
        removed from RIB.
       -Previous excess path from LC1 should be
        installed in RIB but that are not being installed.
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