[j-nsp] System board memory expansion on M7i

[Phill Jolliffe]

FYI,

The forwarding table/ jtree used to forward actual traffic is not
stored the cfeb ram you are referring to. It's in separate sram on the
cfeb

lab at London-AMS1> show chassis cfeb | grep dram
  Total CPU DRAM                    128 MB

lab at London-AMS1> start shell pfe network cfeb0


CSBR platform (266Mhz PPC 603e processor, 128MB memory, 512KB flash)

CSBR0(London-AMS1 vty)# show memory
ID      Base   Total(b)    Free(b)    Used(b)   %   Name
--  --------  ---------  ---------  ---------  ---  -----------
 0    803be0  109036576   98720912   10315664    9  Kernel
 1  47000000   16777216   12559780    4217436   25  Uncached

CSBR0(London-AMS1 vty)# show cchip sram

SRAM Configuration:

 8192KB available, 2 banks active

 Bank  Used  Size (KB)
 ----  ----  ------------
    0   Yes  4096
    1   Yes  4096
    2    No  0
    3    No  0


On 11/1/07, Rubens Kuhl Jr. <rubensk at gmail.com> wrote:
> Hi.
>
> M7i routers can be ordered with 256 or 512 MB RAM system board memory;
> any guidelines on what usage scenarios would make 512MB desirable or
> even mandatory ?
>
> Our need is a Internet router with 3 full-routing transit feeds and a
> bunch of peering connections that made us specify more memory for the
> routing engine, but that may or may not impact forwarding engine
> requirements. AS and J-Flow are already included in the RFP.
>
>
> Rubens
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