[c-nsp] BGP maximum-prefix on ASR9000s

[Hank Nussbacher]

As many of us run full routing tables on our ASR9000s, we have just 
found popping up in our logs:
gp[1058]: %ROUTING-BGP-5-MAXPFX : No. of IPv4 Unicast prefixes received 
from xxx.xxx.220.91 has reached 786433, max 1048576
Reference:
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
The undefined default for maximum-prefix on ASR9000s (IOS-XR) is 1048576.
Recommendation: increase maximum-prefix to 1500000

Regards,
Hank