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WLC connectivity to Nexus 2k - Compatibility Check failed

I recently moved a 4402 Wireless LAN Controller off of a 6509 connection and onto a Nexus 2k connection. The config on the 6509 for the WLC was as follows:

interface GigabitEthernet2/2/32

description ESC-WLC-1 Wireless LAN Controller

switchport

switchport trunk encapsulation dot1q

switchport mode trunk

mls qos trust cos

spanning-tree portfast edge trunk

When I configured the 2k FEX for connectivity, I entered the following comparable config:

int e101/1/23

description ESC-WLC-1 Wireless LAN Controller

switchport mode trunk

spanning-tree port type edge trunk

I was not able to get connectivity to the WLC. The WLC was set to trunk and the interface was up, but even when I issued a show vpc consistency parameters on that interface and all looked good, no connectivity.

Here are some of my log captures:

2011 Nov 11 07:39:24 ESC-NX5010-1 %ETHPORT-3-IF_ERROR_VLANS_SUSPENDED: VLANs 1-5,10,51,100-112,120,155,201-202,251-252,255,302,307,310,320,1109 on Interface Ethernet101/1/23 are being suspended. (Reason: Co

mpatibility check failed for port mode)

2011 Nov 11 07:39:24 ESC-NX5010-1 %ETHPORT-5-IF_UP: Interface Ethernet101/1/23 is up in mode trunk

2011 Nov 11 07:46:22 ESC-NX5010-1 %VSHD-5-VSHD_SYSLOG_CONFIG_I: Configured from vty by admin on 10.243.111.13@pts/1

Does anyone know if there is anything special on the Wireless LAN Controller that needs to be configured?

Thank you,

Bobby Grewal

2 REPLIES
Hall of Fame Super Silver

WLC connectivity to Nexus 2k - Compatibility Check failed

Are you using VPC among the upstream Nexus 5k's which control your 2k FEXs? If so, you need to have the configs synced among your VPC members.

Just a thought - hope this helps.

New Member

Re: WLC connectivity to Nexus 2k - Compatibility Check failed

Yes, they are synced up.

On Thu, Nov 17, 2011 at 10:50 AM, mklemovitch <

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