: %COMMON_FIB-4-DISABLING: IPv4 CEF is being disabled due to a fatal error: %COMMON_FIB-4-DISABLING: IPv4 CEF is being disabled due to a fatal error

[kashalo84]

Am running ASR1001 router as LNS and suddnly i see the following error on the monitor

: %COMMON_FIB-4-DISABLING: IPv4 CEF is being disabled due to a fatal error

any idea????

[Akash Agrawal]

Hi kashalo84,

It normally happens due to low memory and that can be caused due to full internet routing table. Please provide output of 

- show memory stats

- show ip route summary

- show ip bgp summary

Regards,

Akash