Cisco 7200 Series NPE-G2 BGP routing table

[Sharin Taib]

Hi, I was wondering if anyone knew the rough figures that a NPE-G2 is able to hold for the BGP routing table?

378475 network entries using 51472600 bytes of memory

378482 path entries using 21194992 bytes of memory

63008/63003 BGP path/bestpath attribute entries using 8065024 bytes of memory

BGP using 82975730 total bytes of memory

Are these 3 memories different memory allocated or are they are a sub-set of each other?

If a NPE-G2 has 1GB RAM, does it mean that the routing table limit is depending on the RAM availability?

[Giuseppe Larosa]

Hello Sharin,

the total memory used by BGP is reported in the last line

>> BGP using 82975730 total bytes of memory

And it is the sum of the first three reported items

51472600 bytes

21194992 bytes

  8065024 bytes

>> If a NPE-G2 has 1GB RAM, does it mean that the routing table limit is depending on the RAM availability?

Yes because it is a software based router. C7200 with NPE G2 are still used as BGP Route Reflector Servers in Service provider networks

The greatest limitation of a C7200 is the forwarding plane with NPE G2 that is able to switch 2,000,000 pps.

Hope to help

Giuseppe