[c-nsp] An observation: 512k default max-prefix in IOS-XR

[Jeff Kell]

On 4/28/2012 4:10 PM, Robert Blayzor wrote:
> Well the reality of the 720-3BXL in an IPv4/v6 world is that you get
> about 500k IPv4 and half that in IPv6 (IIRC). The l3xl scale license
> will get you 1M IPv4 routes and 128K IPv6. Of course you'll lose a lot
> of your L2 scale. So if your considering the 9K, it would make a
> decent Internet facing router or massive Ethernet
> transport/aggregation platform... not both. Maybe this changed with
> the new RSP's... 

For a VS720/PFC3CXL default allocations:

UTC-Border#show platform hardware capacity forward

L3 Forwarding Resources
             FIB TCAM usage:                     Total        Used      
%Used
                  72 bits (IPv4, MPLS, EoM)     524288     
408427         78%
                 144 bits (IP mcast, IPv6)      262144          
8          1%