Fragmentation problem with Wlan Controler 4402 due to LWAPP header overhead

Hello there,
I have following situation.
network---wlan controller4402----FW1---MPLS---FW2---Access points----networks
I can see very big amount of fragmented packets coming to FW2 and getting dropped in one moment. After those packets get dropped, access points get disconnected
I wonder, is there any documentation, or maybe some of you guys can give me some tip/trick how to set up WLC4402 to use TCP MSS, PMTU or any other settings that can help that IP Datagrams between 4402 and access points don't go over 1300B
Thanks a lot for any help
Regards
Milos

Hello,
Thanks for your response.
I'm a bit confused watching this document you gave me. I don't know which part of it can be related to prevention of IP Fragments between controller and AP-s.
Problem is that controller is located on one side of the network, and we have FW (non cisco), MPLS network, other FW and then APs
other FW across MPLS receive a lot of fragments, which of course should be defragmented for session inspection, so this leads to large CPU utilization and fragment drops.
If we can instruct controller to set MSS bits or to be involved in PMTU, then we could try to prevent end hosts to ever create large TCP/UDP segments/datagrams to be sent via LWAPP tunnel
Thanks for any advice
Cheers
Milos

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