Cisco SG500X and Cisco 3550 Port Channel

[emetesh]

I am stuck figuring the correct commands to create Layer 3 port-channel between the sg500x and a 3550.  

On the SG500 I have:

interface Port-channel3

   ip address 10.100.31.1 255.255.255.0

&

interface gigabitethernet1/1/19

   channel-group 3 mode auto

   no macro auto smartport

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

On the 3550:

interface Port-channel2

    no switchport

    ip address 10.100.31.2 255.255.255.0

&

interface GigabitEthernet1/0/22
   no switchport
   no ip address
   channel-group 2 mode active
   spanning-tree portfast

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

On the SX:

The LAG Management table says LACP Enabled, but link state is always State Down

Sh int port-channel shows the port-channel ports as non-candidate

On the 3550:

GigabitEthernet1/0/22 suspended:  LACP currently not enabled on the remote port.

If i remove the SG port from the channel-group, it forms a trunk, so I think layer 1 is OK.

What am I missing?

[naveeku6]

Hi Emetesh,

Thank you for contacting Cisco online support center.

As per your configuration you have enabled LACP on the SG500X switch. Please find the below details on the syntax for SG500X for LACP.

Syntax

channel-group port-channel mode {on | auto}

no channel-group

Parameters

• port-channel—Specifies the port channel number for the current port to join.
• mode—Specifies the mode of joining the port channel. The possible values are:

       - on—Forces the port to join a channel without an LACP operation.

       - auto—Forces the port to join a channel as a result of an LACP operation.

I think there is mismatch in the spanning tree settings. In 3550  spanning-tree portfast is enabled. Could you please remove and check the status?

If you need any further assistance, You can contact our SBSC team either via chat or call support with the help of below links:

https://supportforums.cisco.com/community/4841/online-chat-support

http://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html

[emetesh]

Sorry, removing portfast didn't change anything.  On a reset of the 3550 port, the link comes up for short period, then says suspended due to remote not enabled for LACP

[naveeku6]

Hi Emetesh,

Sorry for the delayed response. This issue has be checked by taking the switch remotely. If you need further assistance, Please contact Cisco small business support center.

https://supportforums.cisco.com/community/4841/online-chat-support

http://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html

[emetesh]

Sorry, I don't understand what you are saying...taking switch remotely....