06-23-2008 05:21 AM - edited 07-03-2021 04:03 PM
Hello,
we have a problem, that already occured at two locations:
We installed workgroup bridges (at one location a AP-1242AG connecting to an IOS-AP, at the other location a AP-1131AG connecting to a controller-based WLAN). Behind these workgroup bridges there are devices that talk very little by themselves (about one packet per hour).
So in the IOS-WLAN they are reachable only after pinging the device from the AP to which the WGB is connected. In the controller-based WLAN they are only reachable from the WGB itself, not from the rest of the LAN.
My suspicion is, that these devices disappear from the ARP-/Mac-Address-tables because of the little traffic they send. How can we work around this problem? Static ARP- and/or MAC-Entries? But where to place them, in the core, on the APs?
I would appreciate any help.
Thanks,
Sebastian
06-27-2008 02:44 AM
Here is the URL for the WLC configuration and troubleshooting guide which will help you :
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a0080810880.shtml
http://www.cisco.com/en/US/products/hw/modules/ps2797/products_tech_note09186a0080811085.shtml
09-02-2008 07:52 PM
Hi,
Did you find a solution to this issue?
Thanks
09-02-2008 09:23 PM
Hi Ken,
the momentary workaround is to add a static arp entry on :
- The AP to which the device is connected,
- The Switches from the backbone to the one where the wlc is connected
- and the WLC (via mac filter)
Regards,
Sebastian
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