[c-nsp] Graphing SVI throughput on 3550s

[Peter Hicks]

Hello

I've got mrtg/rrdtool graphing some SVIs on a 3550 switch.  The traffic 
throughput figures are coming out wrong, and even a "show int Vlan8" 
gives the wrong output:

   ...
   1 minute input rate 188000 bits/sec, 234 packets/sec
   1 minute output rate 186000 bits/sec, 233 packets/sec
   ...

Why is this wrong?  I'm downloading an ISO image from outside that 
network at about 800Kb/sec right now :)

IOS is 12.1(13)EA1c (which probably needs upgrading, but the kit is 
stable) and the SVI config is:

	interface Vlan8
	 description LON1 NOC
	 ip address 172.16.0.9 255.255.255.0
	 ip verify unicast reverse-path
	 ip helper-address 172.18.183.4
	 no ip redirects
	 ip route-cache policy
	 ip route-cache flow
	 load-interval 60
	 random-detect
	 standby ip 172.16.0.1
	 standby priority 255
	 standby preempt
	 standby name NET-LON1-NOC
	end

What do the counters represent?  More importantly, which OIDs must I 
graph to see the true throughput of the SVI?


Peter.

-- 
Peter Hicks | e: my.name at poggs.co.uk | g: 0xE7C839F4 | w: www.poggs.com

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