[c-nsp] 7200 for BGP

[Cory Ayers]

> I use the 3 7200 to connect to upstreams
> 
> Cisco 7206VXR (NPE-G1) processor (revision B) with 229376K/32768K
> bytes of memory.
> 
> Max CPU usage:28%
> 
> Cisco 7204VXR (NPE-G2) processor (revision A) with 917504K/65536K
> bytes of memory.
> Max CPU usage: 75%
> 
> Cisco 7206VXR (NPE400) processor (revision A) with 229376K/32768K
> bytes of memory.
> Max CPU usage: 45%
> 
> BGP is used with upstreams but I don't receive full BGP table.
> 
> Do these boxes have enough resources to handle the full BGP table?

Definitely not with 256M RAM nowadays...

Here is a 7200 with 256M RAM and iomem set to 32.  It's doing _nothing_ but holding BGP (even CEF is disabled) and even that required filtering some networks.

7200bgp#show ver | i memory|image
System image file is "disk0:c7200-ik9s-mz.124-12c.bin"
Cisco 7206VXR (NPE300) processor (revision D) with 262144K/32768K bytes of memory.

7200bgp#show ip bgp summ | b ^N
Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
10.1.3.55       4 65500  531667    9430  1238583    0    0 6d13h      297067

7200bgp#show ip cef
%CEF not running

7200bgp#show mem summ
                Head    Total(b)     Used(b)     Free(b)   Lowest(b)  Largest(b)
Processor   6412F210   183306880   182614184      692696      688748      252588
      I/O   20000000    33554432     3220256    30334176    26702384    26239804
Transient   6F000000    16777216       17436    16759780    16694224    16752696

Filter applied to make it fit in memory but get as close to full memory utilization:
ip prefix-list dropnets seq 5 permit 128.0.0.0/4 le 32
!
route-map rs65500-in deny 5
 match ip address prefix-list dropnets
!
route-map rs65500-in permit 10

HTH,
Cory