[c-nsp] CRS-1 MSC utilization

bas kilobit at gmail.com
Wed Jun 16 02:12:50 EDT 2010


Hello Oliver,

On Tue, Jun 15, 2010 at 5:00 AM, Oliver Boehmer (oboehmer)
<oboehmer at cisco.com> wrote:
>> Does anyone know if there is a command to view the utilization of a
>> MSC in a CRS?
>
>> We are using the 8 port 10GE PLIMs which are 2:1 oversubscribed.
>> ...
>
> If you want to look at the forwarding asic utilization, "show
> controllers pse utilization location <loc>" is the command you're
> looking for..

How should I interpret the output of that command?
When I issue it on a single PLIM:

-----
#show controllers pse utilization location 0/0/CPU0
                PPE Utilization
        Node            Ingress   Egress
========================================
        0/0/CPU0:          9.2       0.6
----

>From this output I would think there is 10% of capacity ingress and 0.6% egress.

However with "monitor interface" I see:

----
Interface             In(bps)      Out(bps)
Te0/0/0/0              3.6G/ 36%   881.3M/  8%
Te0/0/0/1              5.0G/ 50%   862.5M/  8%
Te0/0/0/2            245.0M/  2%     3.1G/ 31%
Te0/0/0/3            278.5M/  2%     3.6G/ 36%
Te0/0/0/4              2.2G/ 22%   643.6M/  6%
Te0/0/0/5              3.6G/ 36%     1.6G/ 16%
Te0/0/0/6              1.1G/ 11%     3.9G/ 39%
Te0/0/0/7              3.5G/ 35%     4.8G/ 48%
----

Ingress traffic for all interfaces combined is 19.5Gbit/s and egress
is 19.3Gbit/s
Nearly 20Gbits bidirectional traffic would be 50% of MSC (or 40% of
PSE) capacity right? Or am I looking at it in the wrong way?

Or what else should/could we monitor to prevent loss due to too much
traffic on a PLIM.

Thanks,

Bas


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