I noticed our firewall is dropping traffic from local controllers to Airwave because it is fragmented.
The total packet size the controller is trying to send in this example is '32808 bytes', made up of 23 fragments, each with an IP payload of 1480 bytes.
Anyone seen this before?
It must be PAPI with AMON data, but strange that it is trying to send such a big packet?
The path mtu between controller and Airwave is 1500 bytes, confirmed with ping w/ DF flag set.
The below packet capture is showing the fragmented traffic:
The AMON message size can be adjusted: http://www.arubanetworks.com/techdocs/ArubaOS_65x_WebHelp/Web_Help_Index.htm#ArubaFrameStyles/1CommandList/amon_packet_size.htm?Highlight=amon
There is no path MTU discovery for those packets. It is quite possible that your version of ArubaOS is set to 32k: (arubaOS 22.214.171.124 release notes below)
Cool, we're running 126.96.36.199 so that command isn't available - is there any way we can verify the current buffer size?
show amon msg-buffer-size
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