Configuring LACP between Cisco(Etherchannel) and Nortel(MLT)

[billy_vaughn]

I have a Nortel Passport 8600 and am trying to connect a 2950/24 to it using multiple links for redundacy. This is just a test to see if it will work. We are planning on upgrading our closet switches in a few months with 3750's and I want to be able to have multiple uplinks to the 8600. I can't seem to get this to work. Here are my commands from the Cisco switch. I can provide information from the 8600 if needed.

interface Port-channel1

no ip address

interface FastEthernet0/1

no ip address

duplex full

speed 100

channel-group 1 mode passive

!

interface FastEthernet0/2

no ip address

duplex full

speed 100

channel-group 1 mode passive

[alfredshum]

seems you need an additional command "channel-protocol lacp"

interface Port-channel1

no ip address

interface FastEthernet0/1

no ip address

duplex full

speed 100

channel-protocol lacp

channel-group 1 mode passive

!

interface FastEthernet0/2

no ip address

duplex full

speed 100

channel-protocol lacp

channel-group 1 mode passive

!

Also if you use passive on Cisco switch, make sure that it's active on Passport.

[billy_vaughn]

Sorry for the late reply. I have tried the protocol lacp command. Currently I have the Cisco swithc setup with the following.

interface FastEthernet0/23

no ip address

channel-group 1 mode active

channel-protocol lacp

On the Nortel switch there is no way that I see to configure active or passive. The tech I am working with said that it is active by default. One thing on the Nortel switch, you have to configure a lacp key. I have set this key value to 1 on the 8600 but don't see any way to set it on the Cisco. When I do the command show lacp 1 neighbor I get the following which has partner oper key listed. Since there is a standard for 802.3ad I would think this would be alot easier to setup.

Switch#show lacp 1 neighbor

Flags: S - Device is sending Slow LACPDUs F - Device is sending Fast LACPDUs

A - Device is in Active mode P - Device is in Passive mode

Channel group 1 neighbors

Partner's information:

Partner Partner Partner

Port System ID Port Number Age Flags

Fa0/23 00000,0000.0000.0000 0x0 2849s SP

LACP Partner Partner Partner

Port Priority Oper Key Port State

0 0x0 0x0

[ttuncaral]

I am not sure that your problem is solved or not. I had the same problem one month ago between Nortel 8600(MLT) and cisco 2950(FastEC).

Nortel tech provides us a procedure which describes step-by-step configuration with MLT and etherchannel on these devices. If your problem persists I can supply the same document to you.

Regards,

Turkeer (ttuncaral@oytek.com.tr)

[tchacko]

can you provide em the document