IOS and SNMP question regarding 802.1q vlans on 7200.

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1

Hi all. I’ve got a 7206 in a remote collocation facility that’s running dot1q back to the community switch. When MRTG’s cfgmaker only finds the physical interface, not the vlan sub interfaces. The other devices in the network use ISL, and don’t have this problem. Does anyone have recommendations or experiences on how to make this work?

Thanks,
Ejay Hire

2

Hi all. I've got a 7206 in a remote collocation facility that's running dot1q back to the community switch. When MRTG's cfgmaker only finds the physical interface, not the vlan sub interfaces. The other devices in the network use ISL, and don't have this problem. Does anyone have recommendations or experiences on how to make this work?

Thanks,
Ejay Hire

If you do an snmpwalk of interfaces.ifTable.ifEntry.ifType you should
see the dot1q interfaces showing up like this.

interfaces.ifTable.ifEntry.ifType.60 = l2vlan(135)

Have a look for this line in cfgmaker to confirm it knows about them.

  '135'=>'Layer 2 Virtual LAN using 802.1Q',

Regards

Ross

3

Not all IOS versions have 802.1q subinterfaces in the ifTable, 12.0S and
12.2S does.

/Jesper