[f-nsp] Current Total Free Memory [...] is below 5 percent of Installed Memory.

[Dunc]

> Hello,
> 
> 
> after changing to static cam mode CPU utilization is indeed back to normal.
> 
> I was under the impression that dynamic cam mode would save cam memory.
> It was surprising that CPU utilization on the line card was that high.
> While I thought the used networks would stay in the dynamic CAM and only
> being looked up the the CPU once it seems that dynamic CAM mode is
> actually not to be recommended on routers with lots of active
> destination routes.

When it says in the manual...

The default CAM mode currently supported is static CAM mode which is
also known as Foundry
Direct Routing (FDR). You can set the CAM mode to dynamic IP CAM mode
using the following
command:
Brocade(config)# cam-mode ip dynamic


I think FDR means do it in hardware, whereas dynamic means to do at
least some parts in software.

> 
> CAM partitioning and utilization changed a bit:
> 
> #show cam-p u
> 
> CAM partitioning profile: multi-service-2
> 
> Slot 1 XPP20SP 0:
>             [IP] 458752(size),   70890(free), 84.54%(used)
>         :SNet 0:   6993(size),    3608(free), 48.40%(used)
>         :SNet 1: 413274(size),   64632(free), 84.36%(used)
>         :SNet 2:  32183(size),    2209(free), 93.13%(used)
>         :SNet 3:   4795(size),      11(free), 99.77%(used)
>         :SNet 4:    869(size),       7(free), 99.19%(used)
>         :SNet 5:    173(size),       1(free), 99.42%(used)
>         :SNet 6:     30(size),       0(free), 100.00%(used)
>         :SNet 7:     19(size),       9(free), 52.63%(used)
>         :SNet 8:     32(size),      30(free), 06.25%(used)
>         :SNet 9:     32(size),      32(free), 00.00%(used)
>        :SNet 10:     16(size),      16(free), 00.00%(used)
>        :SNet 11:     16(size),      16(free), 00.00%(used)
> 
> 
> Do I have to worry about a totally used SNet?

Well we have no problems with a similar table.

I'm just concentrating on the top line, [IP].

I think that value reaching zero is what we need to worry about, which
probably isn't that far away really.

Cheers,

Dunc




-- 
Dunc Lockwood
Principal Network Engineer

The Bunker Secure Hosting Ltd.
Ash Radar Station
Marshborough Road
Sandwich
Kent CT13 0PL

T: 01304 814800
F: 01304 814899
E: dunc.lockwood at thebunker.net


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