Cisco 4006: no data from aggregated interfaces?

[Chris W]

I have a pair of Cisco Catalyst 4006 switches running Catalyst OS.

The two switches talk to each other with an aggregated (aka bonded) gigabit link, made up of two regular gigabit links. This aggregated connection uses Cisco's proprietary EtherChannel protocol. I also have an Apple G5 Xserve, which is connected to one of the Catalysts with an aggregated (aka bonded) gigabit link, again made up of two regular gigabit links. This aggregated connection, however, uses the IEEE 802.3ad standardized protocol (which Cisco refers to as LACP or LAgP).

Now, cacti works fine for pulling information about the EtherChannel link, but does not work for pulling information about the 802.3ad link. I'm not real sure how to progress from here, can I post some snmpwalk output that will help someone diagnose this for me? Interestingly, with the 802.3ad link, I can graph both of the interfaces making up the aggregate separately just fine. However, the aggregate itself just returns 0 data...

[Chris W]

Noone knows what I can do to fix this?

[egarnel]

Can you pull the snmp info for the link via snmpwalk?
If you can walk it then Cacti can graph it, but it may require adding a custom graph with the specific OID in the snmp query

Also, what sup engine & IOS or CatOS ver are you using?

[Chris W]

I'll try walking it, I've never really done it by hand though! It's running a SUP 2+ and CatOS 8.1(2).

Uptime is 708 days, 10 hours, 52 minutes

It's not new, but it's reliable!

[Chris W]

Where do I pull the info from so that I can use snmpwalk? e.g. the MIBs or whatever?

[egarnel]

snmpwalk -c yoursnmpcommunity -v 1 or 2c ip or resolvable name for 4006 the oid or name in question..

example:
snmpwalk -c public -v 1 4006 1.3.6.1.4.1.9.9.98.1.1.1

1.3.6.1.4.1.9.9.98.1.1.1 = pagpEtherChannelTable
derived from:
http://tools.cisco.com/Support/SNMP/do/ ... annelTable
an excellent tool for Cisco OIDs

You can also do an snmpwalk of the whole device and direct it to a file and then sift thru it for the value you are looking for. Do a man snmpwalk to see what options you have.

It is entirely possible that the particular info may not be available given the version of CatOS you are using.

[Chris W]

Thanks, I'll try the walk in a second and let you know.

But I could have sworn that I've gotten info for the aggregated interfaces in the past. I think it's strange, though, that the PAgP links show data but the 802.3ad links don't?

[Chris W]

Well, snmpwalk dumped a ton of data! The switch has a lot of stuff connected to it. I don't know how to interpret this file, but the Catalyst ports that are aggregrated (the ones I can't get data out of) are 4/17 and 4/18.

Click here for the output (90KB).