[c-nsp] 6500, 7600 or ASR

["Rolf Hanßen"]

Hi,

this is from a Sup2T/PFC4XL with 67xx cards (CFC only mode).
Default values, no config related to the CAM size.

Similar system with Sup720-3BXL looks like:
L3 Forwarding Resources
 Module              FIB TCAM usage:                     Total        Used
    %Used
   5                     72 bits (IPv4, MPLS, EoM)      524288      462992
    88%
                        144 bits (IP mcast, IPv6)      262144        14188
     5%

btw, can somebody confirm that Sup2T can handle 1M IPv4 + 512k IPv6 at the
same time or is it calculated like for example Foundry does in the MLX/XMR
(1M IPv4 or 256 IPv6, every IPv6 entry takes 4x IPv4 Slots) ?

kind regards
Rolf

> On Fri, 30 Aug 2013, "Rolf Hanßen" wrote:
>
>> Hello,
>>
>> just for my interest: what amount of routes are we discussing ?
>>
>> show platform hardware capacity:
>> L3 Forwarding Resources
>>             FIB TCAM usage:                     Total        Used
>> %Used
>>                  72 bits (IPv4, MPLS, EoM)     1048576      460874
>> 44%
>>                 144 bits (IP mcast, IPv6)      524288       14178
>> 3%
>>                 288 bits (IPv6 mcast)          262144           1
>> 1%
>>
>> Do you expect to have more than 1M IPv4 / 512k IPv6 routes or is there
>> some other limitation I do not see ?
>
> Is that a Sup-2T with PFC4XL?  Everything I'd read about it said it had
> the same FIB as the PFC3XL.  i.e.
>
> http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps708/white_paper_c11-676346.html
>
> The FIB in the PFC4 contains 256 K entries, while the FIB in the PFC4XL
> contains 1 million entries. These are the same as their PFC3x forwarding
> engine counterparts. The FIB in the PFC4 contains prefix entries for IPv4
> and IPv6 global address, IPv4 and IPv6 multicast addresses and MPLS label
> entries. There is a level of partitioning that exists to ensure there is
> always some space available for different types of forwarding entries.
> There is some flexibility from a user configuration standpoint that allows
> these partition boundaries to be changed to accommodate more of one type
> of forwarding entry. For example, in the PFC4XL, the default setting
> provides for 512 K IPv4 entries, and this can be increased through
> configuration control to support up to 1 M entries if required.
>
> ----------------------------------------------------------------------
>   Jon Lewis, MCP :)           |  I route
>                               |  therefore you are
> _________ http://www.lewis.org/~jlewis/pgp for PGP public key_________