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Occasional Contributor II
Posts: 29
Registered: ‎07-02-2013

port-channel issue

hi,

I am setting up port-chnnel between two 10 gig interfaces of aruba 7210 controller  and cisco 6500 switch 10 gig interfaces. The interfaces are constantly flapping and port-channel is not coming up. Can someone provide a workng config? Aruba side is showing "forwarding disabled"  as well, 

 

thanks

Guru Elite
Posts: 8,637
Registered: ‎09-08-2010

Re: port-channel issue

Are you using LACP or static? LACP is recommended

Is spanning-tree disabled on the controller? It is recommended to disable STP on the controller side.

 

Please post your current  port-config from both sides.

 


Tim Cappalli | Aruba Security TME
@timcappalli | timcappalli.me | ACMX #367 / ACCX #480
Valued Contributor II
Posts: 804
Registered: ‎12-01-2014

Re: port-channel issue

Hi Falam,

 

First of all you have to turn off spanning tree on the Aruba ports, Make sure you disable spanning-tree on the physical ports as well as the port channel.

Ensure that the configs of the Cisco ports( Duplex, Speed and STP) have to match exactly or else the channel probably won't come up.

 

Try to put command "switchport nonegotiate" on the Cisco side and see if it works.

 

Please feel free for any further help on this.

Cheers,
Venu Puduchery,
[Is my post helped you ? Give Kudos :) ]
Occasional Contributor II
Posts: 29
Registered: ‎07-02-2013

Re: port-channel issue

hi,

i disabled spanning-tree on Aruba but it caused loop. The etherchannel issue still there. I used below config. 

 

Switch:

interface GigabitEthernetx/y

 description xyz

 switchport

 switchport trunk allowed vlan 10,20,30

 switchport mode trunk

 switchport nonegotiate

 logging event link-status

 platform qos trust none remark

 no cdp enable

 spanning-tree portfast edge trunk

 spanning-tree guard root

 channel-group 1 mode active

end

 

 

interface Port-channel1

  switchport

 switchport trunk allowed vlan 10,20,30

 switchport mode trunk

 switchport nonegotiate

 logging event link-status

 platform qos trust none remark

 spanning-tree portfast edge trunk

 spanning-tree guard root

end

 

 

 

Controller:

no spanning-tree

 

interface gigabitethernet 0/0/0

description abc

trusted

trusted vlan 1-4094

switchport mode trunk

switchport trunk allowed vlan <.....>

lacp group 1 mode active

lldp transmit

lldp receive

lldp med

!

!

 

interface port-channel 1

trusted

trusted vlan 1-4094

switchport mode trunk

switchport trunk allowed vlan <......>

Valued Contributor II
Posts: 804
Registered: ‎12-01-2014

Re: port-channel issue

HI friend,

I think you have configured a static channel, enable LACP on both sides.

 

Please feel free for any further help on this.

Cheers,
Venu Puduchery,
[Is my post helped you ? Give Kudos :) ]
Occasional Contributor II
Posts: 29
Registered: ‎07-02-2013

Re: port-channel issue

hi, there is lacp on both sides in the config i posted.

Frequent Contributor II
Posts: 109
Registered: ‎11-11-2008

Re: port-channel issue

Hi

 

This is the LACP config on our Aruba 3600, should be no different on 72xx controller and 10 gig links.

This config goes towards Cisco switch, not sure what model.

 

interface gigabitethernet 1/0
        description "GE1/0"
        trusted
        trusted vlan 1-4094
        lacp group 0 mode active
!

interface gigabitethernet 1/1
        description "GE1/1"
        trusted
        trusted vlan 1-4094
        lacp group 0 mode active

interface port-channel 0
        trusted
        trusted vlan xx
        switchport mode trunk
        switchport trunk allowed vlan xx
        spanning-tree portfast

 

If this does not work, you will have to look at the Cisco side of things.

 

Roar Fossen

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