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LAG WLC 5508 7.0.235 and Nexus 7K 5.2(3a)

I can't get the WLC to form a LAG, the 5508 has 2 SFPs direct to Nexus 7k.  Enabled LAG and rebooted.  The 5508s port 2 just stays Link Down in WLC.

hostname n7k-01

!
int port-channel 31
vpc 31

!
int eth1/12

description WLC-5508-Port1

switchport

switchport mode trunk

channel-group 31 mode active

no shut

show run int eth1/12

Ethernet1/12 is up

  Dedicated Interface

  Belongs to Po31

hostname n7k-02

int port-channel 31
vpc 31

!
int eth1/7

description WLC-5508-Port2
switchport

switchport mode trunk

channel-group 31 mode active

no shut

show run int eth1/7

Ethernet 1/7 is down (Link not connected)

  Dedicated Interface

  Belongs to Po31

Everyone's tags (7)
8 REPLIES

Re: LAG WLC 5508 7.0.235 and Nexus 7K 5.2(3a)

You can't use mode active. The WLC does not negotiate, you have to use mode on.

Steve

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HTH, Steve ------------------------------------------------------------------------------------------------ Please remember to rate useful posts, and mark questions as answered

Re: LAG WLC 5508 7.0.235 and Nexus 7K 5.2(3a)

Changed to channel-group 31 mode on (which is also the default, so you can type channel-group 31 as well)

However I still get 1 port up, 1 port down.

Re: LAG WLC 5508 7.0.235 and Nexus 7K 5.2(3a)

Try swapping g the ports. Could be a bad cable or SFP

Steve

Sent from Cisco Technical Support iPhone App

HTH, Steve ------------------------------------------------------------------------------------------------ Please remember to rate useful posts, and mark questions as answered

LAG WLC 5508 7.0.235 and Nexus 7K 5.2(3a)

In the 5508 is the SFP hot-swappable ? or do I need to power down the 5508 to swap SFPs?

Re: LAG WLC 5508 7.0.235 and Nexus 7K 5.2(3a)

You can hot swap them

Steve

Sent from Cisco Technical Support iPhone App

HTH, Steve ------------------------------------------------------------------------------------------------ Please remember to rate useful posts, and mark questions as answered

Re: LAG WLC 5508 7.0.235 and Nexus 7K 5.2(3a)

Just out of curiosity, I can see from the configuration that you are connected to 2 different Nexus. Are you using a Virtual Port-Channel concept here

New Member

Thank you, This works for me!

Thank you! (Mode On) worked for me!

New Member

Re: LAG WLC 5508 7.0.235 and Nexus 7K 5.2(3a)

Controller cannot establish SXP connection with a Cisco Nexus 7000 Series switch.

Symptom: An SXP connection from the controller to the Cisco Nexus 7000 Series switch reports the On state on the controller side while the switch reports the Waiting for Response state.

Conditions: Establishing SXP connection between the controller and ASA.

Workaround: Add an intermediate device that supports SXPv2 between the controller and the Cisco Nexus 7000 Series switch.

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