[c-nsp] Sup2T-XL vs Sup720BXL FIB TCAM

[Rinse Kloek]

Christian,

The SUP2T-XL and Sup720BXL have the same FIB TCAM size. However the 
SUP2T-XL has one shared pool of TCAM for IPv4/IPv6.
The Sup720BXL has a fixed pool TCAM for Ipv4 and one fixed pool for 
IPv6. If you want to change this allocation, you have to do a config 
change and a reload afterwards.

regards,
Rinse Kloek
Christian Schmit wrote on 5-11-2013 16:13:
> Today I tested a Sup2T-XL and a Sup720BXL in the lab with full bgp feeds for ipv4 and ipv6.
> To my understanding the hardware capacity for the FIB TCAM is the same for Sup720-BXL and Sup2T-XL.
> Sup2T-XL output of "sh platform hardware capacity":CAT6500-RC2TXL#sh platform hardware capacity | begin L3 Forwarding Resources
> L3 Forwarding Resources              FIB TCAM usage:                         Total           Used         %Used                   72 bits (IPv4, MPLS, EoM)     1048576      465980       44%                  144 bits (IP mcast, IPv6)         524288       14903          3%                  288 bits (IPv6 mcast)               262144           1            1%
>                        detail:      Protocol                    Used       %Used                                   IPv4                          465978       44%                                   MPLS                            1          1%                                   EoM                              1          1%
>                                     IPv6                        14894          3%                                   IPv4 mcast                     9          1%                                   IPv6 mcast                     1          1%
>               Adjacency usage:                     Total        Used       %Used                                                        1048576       32018          3%
>
> Sup720BXL output of "sh platform hardware capacity": (FIB TCAM partitioned with "mls cef maximum-routes ip 768")
> CAT6500-RC720BXL#sh platform hardware capacity | begin L3 Forwarding Resources
>
> L3 Forwarding Resources
>               FIB TCAM usage:                          Total        Used       %Used
>                    72 bits (IPv4, MPLS, EoM)       802816      467348         58%
>                   144 bits (IP mcast, IPv6)           122880       14970         12%
>    
>                       detail:      Protocol                    Used       %Used
>                                    IPv4                           467338       58%
>                                    MPLS                             9          1%
>                                    EoM                               1          1%
>
>                                    IPv6                           14963         12%
>                                    IPv4 mcast                       4          1%
>                                    IPv6 mcast                       3          1%
>
>              Adjacency usage:                     Total        Used       %Used
>                                                          1048576        1481          1%
>
> The release notes say:
>
> -XL mode:
>
> · IPv4 and MPLS: Up to 1,007,000 routes
> · IPv4 multicast and IPv6 unicast and multicast: Up to 503,000 routes
>
> "These are the theoretical maximum numbers of routes for the supported protocols (the maximums are not supported simultaneously):"
>
> The above output of the Sup2T-XL seems to say that the Sup2T-XL has a larger FIB TCAM (2M) than the Sup720-BXL.
>
> Christian
>
>
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