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Community Member

6513 utilisation

Hi all

I'm wondering if there is a way to determine the utilization of a 6500? We're trying to determine if we need to upgrade our sup to a sup720.

9 REPLIES
Community Member

Re: 6513 utilisation

The command "show processes cpu" gives a good idea of utilization of the device. Refer to the document for determining the cause.

http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a00804916e0.shtml

Community Member

Re: 6513 utilisation

"sh proc cpu history" shows statistics up to 72 hours.

Blue

Re: 6513 utilisation

Looking at sh proc cpu will tell you what the processor is doing, but most 6500 traffic is handled by ASICs, and never sees the processor. The exception is logged ACLs or ICMP.

You can do a show system which will give you backplane utilization.

The best approach is to look at the modules you have installed, or are planning to install, and the load on those modules. The Sup 720 can handle 40gb/s per module. If you want to run 10gb to servers, or have heavily loaded 48 port gig blades you might think about the 720. If you using mostly 100 mb that is not heavily utilized you are probably OK. What version sup are you on now?

Please rate helpful posts.

Dave

Community Member

Re: 6513 utilisation

We're running a sup2.

Below is the output of the show system:

Modem Baud Backplane-Traffic Peak Peak-Time

------- ----- ----------------- ---- -------------------------

disable 9600 12% 24% Fri Nov 24 2006, 21:43:27

24% peak doesn't appear that high, is there a way i can see each module/blade? It might mean that i stager highly utilised hosts on different modules to have a more even spread of traffic

Blue

Re: 6513 utilisation

The right answer depends very much on what blades you have installed, and what your future plans are.

If you can post a show module output it would be helpful.

Here is a data sheet that compares the capability of the Sup 2 and 720:

http://www.cisco.com/en/US/products/hw/modules/ps2797/products_data_sheet09186a00800887fd.html

Please rate helpful posts.

Dave

Community Member

Re: 6513 utilisation

Hi Dave

Thanks for the link

below is the show mod

Mod Slot Ports Module-Type Model Sub Status

--- ---- ----- ------------------------- ------------------- --- --------

1 1 2 1000BaseX Supervisor WS-X6K-SUP2-2GE yes ok

15 1 1 Multilayer Switch Feature WS-F6K-MSFC2 no ok

2 2 2 1000BaseX Supervisor WS-X6K-SUP2-2GE yes other

16 2 1 Multilayer Switch Feature WS-F6K-MSFC2 no standby

3 3 0 FlexWAN Module WS-X6182-2PA no ok

4 4 0 FlexWAN Module WS-X6182-2PA no ok

5 5 16 1000BaseX Ethernet WS-X6416-GBIC no ok

6 6 16 1000BaseX Ethernet WS-X6416-GBIC no ok

7 7 48 10/100BaseTX Ethernet WS-X6248A-TEL no ok

8 8 48 10/100BaseTX Ethernet WS-X6248A-TEL no ok

9 9 48 10/100/1000BaseT Ethernet WS-X6148-GE-TX no ok

10 10 48 10/100/1000BaseT Ethernet WS-X6148-GE-TX no ok

11 11 48 10/100/1000BaseT Ethernet WS-X6148-GE-TX no ok

We're running low on port capacity as well so going to get a couple more ws-x6148-ge-tx. I'm not 100% sure what the servers on these ports would be doing so would only be guessing how much traffic they will produce.

Blue

Re: 6513 utilisation

Here's another good link that compares performance of ethernet modules with the different sup choices.

http://www.cisco.com/en/US/products/hw/modules/ps4835/products_data_sheet0900aecd8017376e.html

Since your backplane utilization is not that high, you might just want to add the new blades and keep an eye on it. The 6148s are classic modules, and do not support distributed forwarding. You would not get much benefit from the 720 with these blades.

Please rate helpful posts.

Dave

Community Member

Re: 6513 utilisation

Hi Dave

yeah looks like it, do you know of a command to show the util of per blade? maybe then i can justify going up to a 720 and getting cef modules and put the high util boxes on that blade.

Regards

Nhon

Bronze

Re: 6513 utilisation

I would recommend using a program such as cacti or MRTG to query and graph historically the cpu utilization. That way you can trend as well..

http://www.cacti.net

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