Cisco trunk group and avaya p330 LAG

[zeropoint46]

I originally posted this in the avaya definity forum, but I didn't get any response. I am trying to setup a LAG group to my cisco 2960g switch. I'm having trouble getting it successfully configured and was looking for any pointers. Here is the config on my cisco:


interface Port-channel2
switchport mode trunk

interface GigabitEthernet0/1
switchport mode trunk
channel-group 2 mode on
!
interface GigabitEthernet0/2
switchport mode trunk
channel-group 2 mode on

I've also set switchport access vlan on the interfaces so it's in the native vlan that the p330 is on. Nothing seems to work. It looks like the links come up but I can send/receive data.

thanks.

 

[VinceWhirlwind]

change your channel-group command to "active" instead of "on".

 

[VinceWhirlwind]

Also, you have "switchport mode trunk", but if the Avaya side isn't configured the same for VLANs the aggregation is likely to not occur.

What is the VLAN config on the Avaya side?

At the very least I suspect you will need to add
sw tr encap dot1q
because the way you have it it's going to try to negotiate.

Or maybe what you really want is
sw mode access
instead

 

[zeropoint46]

I've tried it with switch port mode access and it's not working. the avaya is in vlan1 default. I was under the impressions that "active" meant to negotiate LACP and I didn't think the p330 supported the lacp protocol but I will give that one a try. Lastly, my 2960g doesn't allow me to do encap dot1q, I think it just defaults to that because it's not an option that I can choose. I'll try the active with switchport mode access enabled tomorrow and post back. thanks for the info.

 

[zeropoint46]

I'm thinking what I really want is switchport mode access. I believe that the avaya switch is in the default vlan1 with no sort of tagging going on. so here is my cisco config:


interface Port-channel2
description avaya-pbx
switchport access vlan 410
switchport mode access
!
interface GigabitEthernet0/1
switchport access vlan 410
switchport mode access
channel-group 2 mode active
!
interface GigabitEthernet0/2
switchport access vlan 410
switchport mode access
channel-group 2 mode active

to me this looks like it may work but the active worries me cause it talks about negotiating LACP which I don't think the avaya supports. let me know what you think. I have also confirmed the 2960g only support dot1q encapsulation anyways. thanks.

 

[VinceWhirlwind]

No.

"on" uses a Cisco-proprietary aggregation protocol.

"auto", or "passive", or "desirable" means it has to negotiate.

"active" means it will be a LACP trunk no matter what the other side is.

And I agree, sw mode access seems to be the way to go.

 

[zeropoint46]

Right, like I was saying, active means lacp, and again, I don't think that the avaya supports 802.3ad, but I'm gonna give it a go tonight. thanks.