Today, I found the log:
RP/0/RSP0/CPU0:Aug 30 18:28:24.645 : bgp: %ROUTING-BGP-5-MAXPFX : No. of IPv4 Unicast prefixes received from x.155.224.185 has reached 786768, max 1048576
That appear every 30 seconds. And found that it is the default limit on ASR https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k_r5-3/routing/configuration/guide/b_routing_cg53xasr9k/b_routing_cg53xasr9k_chapter_010.html#con_1088375.
So, do you have any recommend for the ASR which received internet routes should I change the maximum prefix or change the threshold would be better? And what is the recommended value?
Thank you very much.
Either way is acceptable, it really depends on how many routes you expect and when you want to be warned.
This is an older guide but command hasn't changed https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k_r4-0/routing/command/reference/rr40asr9kbook_chapter1.html#wp1389533032