High ping loss but only on 1 SSID, other SSID's fine.

[craighowson]

Hi all

Can anyone shed any light on why we would be seeing high ping loss (around 9%) on one specific SSID but other SSIDs are fine. Apart from the AAA settings all other settings are the same.

When the ping drops, I can see in the mac address-table that the mac shows "incomplete" and once the pings starts again the mac address can be seen in the mac table again.

I have tested in 2 buildings so on different AP's (same fabric VN) and with multiple devices, results are the same.

The device wireless NIC drivers are on the latest and the WLC is running 8.10.182.0 (soon to upgrade to 8.10.183.0).

When wired into the same VN it works fine.

Please help my sanity!

TIA

[balaji.bandi]

High ping loss but only on 1 SSID  - is this only for 1 devices? all the devices ?

where are you pinging to ? gateway ? or external ?

[craighowson]

Thanks for your quick response.

Same ping loss for multiple devices.

Multiple pings running to gateway and 8.8.8.8

[balaji.bandi]

This is only happening when you upgraded before it was working ok, so you need to capture some debugging and verify the config, is there anything changed before the upgrade and after the upgrade compare

or contact TAC since it was broken after the upgrade.

[craighowson]

I think you may have misunderstood, I haven't upgraded yet. We are currently running 8.10.182.0 and am planning to upgrade soon to 8.10.183.0.

[balaji.bandi]

When was this issue started?  what is the different routing and config you observe compare to other SSID vs not working SSID

you need to provide some config information for us to understand the issue ?

how many SSID you have ?

[Scott Fella]

A few things, when you test in site A, do you see slowness locally, either to the site A gateway or another device on the same vlan (connect a wired device to the same vlan)?  This way you can isolate where the issue is.  You can also test using a test open ssid on the same vlan.  This test can help determine if maybe a configuration on the ssid is the issue.  Just start to try to isolate the issue and then it is easier to determine what part of the network you need to focus on.

Make sure you use the same device, both wired and wireless when testing.