WLC 4402 LAG connection to 2 different chassis of 6509 VSS switch system
I have inherited a 6509 VSS switch system as the network core and have the task of ensuring proper redundancy and redesign of the directly connected data center devices. One of the connected devices (WLC 4402) physically appears to be connected to both switches - the WLC is in the same rack as VSS-Chassis1 so I can trace the fiber from WLC port 1 to gi1/1/22, the other fiber from the WLC port 2 goes into the floor and presumably over to VSS-Chassis2 gi2/1/22 (there is fiber connected there, I have link lights on both sides, and the port channel, Po200, on the VSS switch which is configured on gi1/1/22 is also configured on gi2/1/22). My question pertains to the CDP neighbor output I get on the VSS switch: (truncated to include just the WLC)
NCMECHQWiFi1 Gig 1/1/22 137 H AIR-WLC44 Gig 0/0/2
NCMECHQWiFi1 Gig 1/1/22 137 H AIR-WLC44 LAGInterface0/3/1
NCMECHQWiFi1 Gig 1/1/22 137 H AIR-WLC44 Gig 0/0/1
It looks like both WLC ports are physically connected to Gi1/1/22, which they are quite obviously not.
This is confirmed on the WLC's sho cdp entry all output:
Time since last port bundled: 173d:17h:06m:34s Gi2/1/22
Time since last port Un-bundled: 173d:17h:06m:34s Gi2/1/22
Last applied Hash Distribution Algorithm: Fixed
>>> So my question, arising at least partly from the apparently misleading CDP information, is this: How can I confirm that the WLC is correctly dual homed to both core switches? (short of tracing the cable) I ask because there are several other devices (not WLCs) that need to have the dual homed connections confirmed.
I tried a layer 2 trace route but for all macs associated with the WLC, the trace abborts with the error "Device has Multiple CDP neighbours on destination port."
WLC 4402 LAG connection to 2 different chassis of 6509 VSS switc
PS: It is critical that I confirm the redundancy, since as a part of the data center redesign we will be moving the second VSS chassis to the same rack with the first to simplify the dual connections. I need to verify all the redundant connections before I take it offline and move it. Thanks!
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
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