Port channel with C3560 cisco switch

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I need to setup a port channel with a Cisco switch. I just want to verify the steps I need to perform. 


This is what I have on the Cisco side for the port channel config so far:

interface Port-channel1
description Etherchannel to summit
switchport trunk encapsulation dot1q
switchport mode trunk



interface GigabitEthernet0/49
description Trunk to summit GI2/1
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 1 mode desirable
!
interface GigabitEthernet0/50
description Trunk to summit
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 1 mode desirable
!
interface GigabitEthernet0/51
description Trunk to summit
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 1 mode desirable
!
interface GigabitEthernet0/52
description Trunk to summit
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 1 mode desirable

On the extreme side:

en sharing 1:48 grouping 1:48,2:48,3:48,4:48 lacp
con port 1:48 des port_channel_cisco

Then I would just remove ports from default vlan:

con default del port 1:48,2:48,3:48,4:48


Then add them to my vlans

con server add port 1:48,2:48,3:48,4:48 untagged
etc.....

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Posted 3 years ago

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Marcus Florido

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The cisco is going to want to negotiate the port channel/LAG via PaGP.  The industry standard for this protocol is LACP, which you'll want to make sure and specify on the cisco.  In your channel-group command, replace "desirable" with "active".  This will let the cisco know to use LACP instead of PaGP, and your LAG should be negotiated and work just fine.
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HED Admin

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I can't ping across this new port channel?  I do a summary and it looks up.  Ideas?
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Marcus Florido

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Funny, never had a problem creating a LAG between Extreme/Enterasys, Enterasys/Juniper, Juniper/Extreme, or any other vendor.  Apparently the Cisco is the oddball here.  Glad you got it figured out.