Has anyone else experienced an issue with the AP1131ag access points flooding the network with igmp packets? I have an AP1130 already in service which did not cause this to happen. And this has happened with 2 AP1131 that I have taken out of the box. I have disabled igmp snooping already but this has not helped. It basically causes a dos attack on the network and brings it down to igmp packets account for 95% of my entire network traffic.
if your monitoring client is connected to a wired LAN, traffic appears normal, no extraordinary igmp traffic .....
But, when you connect the same monitoring client to the wireless LAN (only), that client sees a massive amount of igmp traffic, is that right?
Do you have any VLANS or additonal SSIDs configured?
Are you running any multicast applications on the wireless clients? Does the trace provide any additonal information as to where or what application the clients are trying to reach?
What version of IOS is running on the affected APs? Same as the "normal" ones?
And, just as a sanity check, you realize that if you are monitoring through a switchport in mormal mode, all you will see is broadcast / multicast traffic (and the traffic destined for the client's interface)? Are you also seeing a lot of ARP traffic?
No offense intended on the last point, but sometimes people forget ...
Transferring Crash file from standby:
Login to the Active WLC in HA.
(Cisco Controller) >transfer upload datatype crash
(Cisco Controller) >transfer upload filename <Desired filename>
(Cisco Controller) >transfer up...
This is the start of a display filter cross reference between Wireshark and OmniPeek.
The 1st installment is a table of advanced filters. More filters will be added as time allows.
It is a living doc, so check back for changes every so often
Please feel ...
I have created a Powershell script to automatically add a Wireless Guest User on Cisco WLCs. (tested on 2500 Series)
The script should be completely self explanatory.
Powershell SNMP Module (Install-Module -Name SNMP)
SNMP Write Access to...