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Large round trip delay

6tschraml
Level 2
Level 2

We are using Access Point Cisco Aironet 1200

together with AIR-CB21AG-E-K9.

When sending long term pings from the notebook

to the AccessPoint we always get round trip delays

of <1ms. But usually one or two times the minute

we get a block of replies with delays up to

100ms. We are testing in a single user lab environment

and there is no traffic going over the LAN.

We simply ping the AP and not the components in the

LAN behind it. We have the effect with several

notebooks and different drivers.

Parallel we found out that VoIP traffic traversing

this AP gets interrupted one or two times the minute.

Question:

Is it normal that the radio path of an AP periodically

produces round trip delays of 100ms?

I know that in a shared medium fast response time cannot be guaranteed all the time but this here looks like an effect that is "build in" the system.

Thanks in advance

1 Reply 1

wong34539
Level 11
Level 11

I think you have found a known bug, check CSCee84789 for more details using the bug tool kit.

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