MRTG: Etherchannel (Port Monitoring)

[colmgrier]

Q. Can MRTG monitor a etherchannel circuit (3 x 1GB Dot1q) and deliever correct stats?

Q. Does traffic load balance over a etherchannel (Dot1q) circuit?

Thanks,

Colm

[Joe Clarke]

A channel interface should get its own ifTable entry, so you can monitor that interface to get an aggregated utilization.  As for load balancing and redundancy over channels, see http://www.cisco.com/en/US/tech/tk389/tk213/technologies_tech_note09186a0080094714.shtml .

[colmgrier]

Hi Joe,

Are etherchannels load blanacing  by default on 6500 switches, or do I need to configure globally?

port-channel load-balance {src-mac | dst-mac | src-dst-mac | src-ip

show etherchannel load-balance

Thanks,

Colm

[Joe Clarke · Accepted solution]

Load balancing is enabled by default.  Use the "show etherchannel load-balance" command to see the current algorithm.