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Cisco Bug: CSCvv01445 - Router Crashes when advertised-routes command executed for neighbours

Last Modified

Aug 25, 2020

Products (1)

  • Cisco IOS

Known Affected Releases

17.3.1

Description (partial)

Symptom:
ISR router crashes by executing show command for advertised routes to neighbour.

Execute below command on ISR router the router hangs for some time and then crashes.
 
 
MSEE-ISR4351-B#sh bgp vrf OOB neighbors 1.1.1.1 advertised-routes 192.168.1.0/24
 
Even with out VRF also, same observation that the router crashes.
 
MSEE-ISR4351-A#show bgp neighbors 1.1.2.1 advertised-routes 192.168.1.0/24

Conditions:
Steeps to reproduce:
BGP neighborship with or without VRF. (in this example neighbour is 1.1.1.1)
Execute Show command (?show bgp vrf OOB neighbors 1.1.1.1 advertised-routes 192.168.1.0/24? or ?show bgp neighbors 1.1.2.1 advertised-routes 192.168.1.0/24?
Router will crash after few minutes of execution of show command.

other observations:
Valid BGP neighbor is required to reproduce.
Any random IP address is enough after advertised-routes.
No need to advertise any routes to reproduce this.
an reproduce With or without VRF.
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Bug Details Include

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