[mrtg] Re: baseline info on a Cisco router

[David Gabler]

I keep track of
            Queue Drops
            Collisions (Ethernet)
            Collisions (Serial)
            Restarts & Resets
            Ignored Input
            Packets In and Out
            BPS (Ethernet) In and Out
            BPS (Serial) 
            Ethernet 0/0 
        Serial 0/0 
        CPU load 
        Free Mem 
        NVRAM used 

Not that all of this is needed but you never know when it will come in handy. 
I look at these graphs about once a week to look for anything suspicious.

With collisions, Ethernet is collision based so some or a smaller amount is not
bad but when your collisions get rather high you know it is time to 
segment your network.

The others I dont know how to really interpret but I look to see if there is
something not "making sense" and then go from there.

Hope this helps.

Oh I would get the book titled "Cisco Management Information Base (MIB) User
Quick Reference"  from cisco.  If you have a support contract you can get this
for free.

David

At 05:53 PM 3/10/00 -0500, Greg Tillman wrote:
>This question is slightly off-topic, for which I apologize, but I haven't
>gotten much help at all from Cisco, or from the Cisco news group, and I
>haven't found anything in the mailing list archive either.
>
>I'm using MRTG to graph traffic rates and CPU usage on our one router, a
>Cisco 3600.  What else on the router should I be graphing or keeping an eye
>on?  OIDs welcome, but mostly I'm just wondering what are the potential
>bottlenecks or problem areas that other people keep an eye on.  For ex, I
>graph free processor memory, but should I also worry about free I/O memory?
> How about free buffers?  Queue sizes?  Collisions?
>
>All comments and suggestions welcome, including pointers to documentation I
>should have read and didn't.  Thanks.
>
>- greg tillman
>u. maine farmington
>
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David Gabler                  Project Manager, Network Services
Americom USA       Phone 805.545.5078

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