ether channel between cisco 3750 stack switches and foundry switch

[muhsinamol]

Dear Tam,

Anyone can support regarding  ether-channel between  cisco 3750 stack switches and foundry switch.

I am bale to do with cisco single switch, but when it comes to 3750 stack switch ( 2*3750). 

But when it comes between  cisco stack 3750  and  Foundry ,ether-channel   is not coming up.

Regards

Muhsinamol

[Julio E. Moisa]

Hi

Most of the third party manufactures use LaCP, have you tried to configure both end in active mode?

Could you please share the config of both ends?

[muhsinamol]

Thanks Jlio for your support.

I tried LACP  it will work with cisco  if it is single switch, but my case it is stack switch with two 3750.

My config as below.

Cisco 3750 stack

=====================

interface Port-channel1
switchport mode access
switchport access vlan 10

int GigabitEthernet0/1/37
switchport access vlan 10
channel-group 1 mode active
!
interface GigabitEthernet0/2/37
switchport mode access
switchport access vlan 10
channel-group 1 mode active

On Foundry FastIron superX

======================

interface ethernet 0/1/21
link-aggregate configure key 10000
link-aggregate active
!
interface ethernet 0/1/22
link-aggregate configure key 10000
link-aggregate active

vlan 10
untagged ethernet 0/1/21
untagged ethernet 0/1/22

Regards

Mohsinamol

[Mark Malone]

a stack of 2 switches is a single switch in Cisco logically so you can spread a port-channel across 2 switches no problem once there stacked right , same with VSS and VPC feature po can be spread across multiple switches

[Julio E. Moisa]

Hi

You are welcome, You should not have any problem with 2 stacked 3750, they should be seen like one switch. The config looks fine on the stack, just a couple of question: 

interface ethernet 0/1/21
link-aggregate configure key 10000   <--- is it any kind of authentication?
link-aggregate active
!
interface ethernet 0/1/22
link-aggregate configure key 10000
link-aggregate active

vlan 10
untagged ethernet 0/1/21   <--- can it be tagged instead untagged?
untagged ethernet 0/1/22

Could you please share the output of: show etherchannel summary  on the Cisco stack?

Thank you in advance.