05-17-2019 07:38 AM - edited 07-05-2021 10:25 AM
Hello,
Strange one here. Firstly I'm no expert on our WLC 5508 (2 in HA mode).
We have a few interfaces under Controller > Interfaces I guess these are the VLANs for the SSIDs.
Our main SSID is on VLAN 121 and all is ok. However if I ping the IP of the WLC interface for this VLAN there is about 50% packet loss. The WLC connects to 2 Nexus core switches (port channel) and If I go onto both and ping this interface they have about 70% packet loss.
Form the WLC CLI the ping is 100% to itself (you never know).
Again no issues. Other less busy interfaces are all good and 100% ping success.
Not sure if the interface is using QoS to put pings down the to the bottom of the queue and drop, not sure how I would find this out?
Thanks
05-17-2019 08:10 AM
Hi
You´re saying that your WLC is connected to Nexus via trunk and when you ping from Nexus to WLC you face packet loss? I´d start revising the cabling/fiber and GBIC between booth. This can be a physical problem.
Check on Nexus interfaces is there are any drop, CRC etc.
-If I helped you somehow, please, rate it as useful.-
05-17-2019 09:32 AM
05-17-2019 11:50 AM
If different vlans are fine, it must not be physical.
I´d check the config just to make sure but I agree that this make no sense.
-If I helped you somehow, please, rate it as useful.-
05-17-2019 02:01 PM
05-18-2019 12:47 AM
It's on 8.2.166 and we have 27 APs in FlexConnect mode.
We plan to go to 8.5.x soon.
I am pining today where no one is really using it and pings are fine.
Maybe bandwidth? How can I check this though?
Can I upgrade straight to 8.5.x.x from 8.2.x.x?
Thanks
05-20-2019 01:21 AM
05-20-2019 04:01 AM
Hello,
Fixed! Well it will be soon. I put this IP in our monitoring system as noticed all weekend it was fine, but when users started to turn up I started to get packet loss. I then thought is it another device and it turns out a laptop has been statically configured with the same IP (oh my).
Anyway I'm now interested how I can check if I'm using LAF ports on the WLC, how do I check? The Nexus swtiches already do and have the correct VLANs allowed across.
Thanks
05-20-2019 04:34 AM
05-20-2019 07:51 AM
Thanks, just says LAG mode enabled.
The Nexus ports are Port Channels leading to the WLC
05-20-2019 08:25 AM
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