620 Controller AOS 5.0.2.1 getting latency

[Nik-P]

Hi,

We have Aruba 620 controller. AOS 5.0.2.1 and 2 AP 93

We are getting high latency through wireless network.

AP are installed in different places.

Please suggest troubleshooting steps.

Thanks in advance...

[cjoseph · Accepted solution]

the AP93 is a single band AP, so you are very limited in what you can do.

- Enable Drop Broadcast and multicast on all of your Virtual APs

- Broadcast as few SSIDs as possible.

[Abilash Soundararajan]

Below are some high level initial troubleshooting steps:

1) Segregate if the problem is seen in wired network itself or only in WLAN.

2) Check if the issue is band specific - 2.4 or 5 GHz

3) Have a separate VLAN for WLAN to reduce broadcast/ multicast pollute the RF.

4) Ensure you dont have non wifi RF interference.

5) You are in a really old code. Go through the release notes and atleast move to the latest 5.0.4.x code.

[Nik-P]

Thanks for your reply.

I have enabled drop broadcast & multicast but no luck.

I test ping from controller to gateway ip & result are fine. But if i ping from controller to client IP i am getting latency as well packet drop.

There is no interference observed in the air.

Thank you..

[cjoseph]

Did you try upgrading the ArubaOS code?  It could improve your issue.

Again, the AP93 operates a single band, that means there is alot of interference and contention that you will have to accept, so there is a limit to the performance when using a device that operates only at 2.4ghz.

[jhoward]

Also dpending on your client device, make sure that any PSP (power-save) is disabled as it will artificially introduce a lot of latencies and PL in the ping response