[nsp] Messuring input queue drops via SNMP, and MAC/IP lenght inconsistencies

[Sam Stickland]

Hi,

I'm getting some input queue drops on a couple of my VLANs on a Cisco 6500.
I'm planning on graphing when they occur via MRTG, but I'm getting some
strange results out of SNMP.

sh int vlan 999

reports

Input queue: 0/300/7346/0 (size/max/drops/flushes); Total output drops: 0

VLAN 999 has the interface number 65, occuring to

ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifName.65 = Vl999

But when I attempt to query the number of dropped packets (ref:
http://www.cisco.com/pcgi-bin/Support/Mibbrowser/unity.pl?f=Translate&t=no&o
=1.3.6.1.4.1.9.2.2.1.1.26) , I get:

enterprises.9.2.2.1.1.26.65 = 9198

Any idea why this figures would be different? On the other VLAN thats
getting dropped packets the console shows 632 drops, but SNMP gives 420835!
:o

It's possibly unrelated, but I'll mentioned it here - I'm logging the
following messages at the rate of about one an hour:

%MLS_STAT-SP-4-IP_LEN_ERR: MAC/IP length inconsistencies

None of the ports in use are recording any errors, so it makes it hard to
track. I seem to remember reading somewhere before that someone else
experienced these problems on a 6500 and a change of IOS version fixed it.

This is with version 12.2(14)SY, on a Cat6506 with a WS-X6K-SUP2-2GE.

Sam