Cisco 7600 - LACP based LAGs with 3rd Party Switch

Unanswered Question
Oct 17th, 2007

Following is my configuration:

interface GigabitEthernet3/2

description ----Conencted to ATCA1 SW1 Fabric 18----

switchport

switchport trunk encapsulation dot1q

switchport trunk native vlan 1220

switchport trunk allowed vlan 1220,1240

switchport mode trunk

no ip address

speed 1000

duplex full

lacp port-priority 100

channel-protocol lacp

channel-group 11 mode active

end

!

interface GigabitEthernet3/3

description ----Conencted to ATCA1 SW1 Fabric 19----

switchport

switchport trunk encapsulation dot1q

switchport trunk native vlan 1220

switchport trunk allowed vlan 1220,1240

switchport mode trunk

no ip address

speed 1000

duplex full

lacp port-priority 100

channel-protocol lacp

channel-group 11 mode active

end

However, the Po11 doesnt come up and the line protocol on 3/2 and 3/3 are down.

C7606-1#sh ip int brief gig3/2

Interface IP-Address OK? Method Status Protocol

GigabitEthernet3/2 unassigned YES unset up down

C7606-1#sh ip int brief gig3/3

Interface IP-Address OK? Method Status Protocol

GigabitEthernet3/3 unassigned YES unset up down

C7606-1#sh ip int brief Po11

Interface IP-Address OK? Method Status Protocol

Port-channel11 unassigned YES unset down down

C7606-1#

Following are the LACP parameters...

C7606-1#show lacp 11 internal

Flags: S - Device is requesting Slow LACPDUs

F - Device is requesting Fast LACPDUs

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

Channel group 11

LACP port Admin Oper Port Port

Port Flags State Priority Key Key Number State

Gi3/2 FA not-bnd 100 0xB 0xB 0x302 0x7

Gi3/3 FA not-bnd 100 0xB 0xB 0x303 0x7

C7606-1#show lacp 11 neighbor

Flags: S - Device is requesting Slow LACPDUs

F - Device is requesting Fast LACPDUs

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

Channel group 11 neighbors

Partner's information:

Partner Partner LACP Partner Partner Partner Partner Partner

Port Flags State Port Priority Admin Key Oper Key Port Number Port State

Gi3/2 FA not-bnd 128 0x0 0x4A 0x12 0x77

Gi3/3 FA not-bnd 128 0x0 0x4A 0x13 0x77

C7606-1#

I have this problem too.
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kasiddiq Wed, 10/17/2007 - 16:02

C7606-1#show etherchannel port | beg Group: 11

Group: 11

----------

Ports in the group:

-------------------

Port: Gi3/2

------------

Port state = Up Mstr Not-in-Bndl

Channel group = 11 Mode = Active Gcchange = -

Port-channel = null GC = - Pseudo port-channel = Po11

Port index = 0 Load = 0x00 Protocol = LACP

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.

Local information:

LACP port Admin Oper Port Port

Port Flags State Priority Key Key Number State

Gi3/2 FA not-bnd 100 0xB 0xB 0x302 0x7

Partner's information:

Partner Partner LACP Partner Partner Partner Partner Partner

Port Flags State Port Priority Admin Key Oper Key Port Number Port State

Gi3/2 FA not-bnd 128 0x0 0x4A 0x12 0x77

Age of the port in the current state: 3050584830d:14h:25m:50s

Port: Gi3/3

------------

Port state = Up Mstr Not-in-Bndl

Channel group = 11 Mode = Active Gcchange = -

Port-channel = null GC = - Pseudo port-channel = Po11

Port index = 0 Load = 0x00 Protocol = LACP

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.

Local information:

LACP port Admin Oper Port Port

Port Flags State Priority Key Key Number State

Gi3/3 FA not-bnd 100 0xB 0xB 0x303 0x7

Partner's information:

Partner Partner LACP Partner Partner Partner Partner Partner

Port Flags State Port Priority Admin Key Oper Key Port Number Port State

Gi3/3 FA not-bnd 128 0x0 0x4A 0x13 0x77

Age of the port in the current state: 0d:00h:00m:00s

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