Cisco Link Aggregation

[Carlosinfl]

I have a Cisco switch that has 4 ports configured with PAgP and sadly that doesn't help us get a large 4 port network pipe from our NAS box to the switch. I know PAgP is just for Cisco to Cisco devices. I was wondering if I can configure the 4 ports on the switch to use 802.3ad LACP? Is this possible or has anyone ever done this before and can give me any advice?

 

[NetJunkie]

What model switch?

 

[Vito_Corleone]

It should definitely be possible if you've got new/decent gear. Like NetJunkie posted, we'll need to know what you've got. The command will likely be:

channel-group N mode active

 

[Wotok]

Yup, mode active for LACP, desirable for PAgP

http://ciscoiseasy.blogspot.com/2010/11/lesson-24-layer-2-etherchannel.html

 

[Carlosinfl]

Thanks all. For what it's worth, the switch info is below. They're about 2-3 years old for us:

Switch Ports Model              SW Version            SW Image                 
------ ----- -----              ----------            ----------               
*    1 48    WS-C2960G-48TC-L   12.2(46)SE            C2960-LANBASEK9-M

 

[spiderjericho]

Cisco Switches support Cisco and IEEE link aggregation. If you're trying to negotiate via protocol it's going to be channel-protocol lacp then use channel-group # mode (active, on or passive).

 

[Vito_Corleone]

Cisco Switches support Cisco and IEEE link aggregation. If you're trying to negotiate via protocol it's going to be channel-protocol lacp then use channel-group # mode (active, on or passive).

You don't need the channel-protocol command.

 

[BobSutan]

What kind of link aggregation you use depends on where the device sits in the network. Core devices should always me manually set and leaf devices left to auto-negotiate.