I tried this already and I don't think it works in H-Reap mode, when I make the adjustment I don't see this reflected in the packets in wireshark. They remain as 1390 from the WLC and 1460 from the client.
If I reduce the mtu on the client directly to 1300 I see the packets from the client with MSS 1260 and this works perfectly, but obviously I'm not able to manually reduce the mtu on every client that will connect to this guest network.
is it hreap local or central switching. central switching may still use tcp-mss.
with hreap local switching, on AP you can reduce the MTU size. but the setting doesn't sustain AP reboot.
Telnet/SSH/Console to AP to change the MTU to desired Bytes:
debug capwap con cli
Note: This workaround does not survive an AP reboot, and must be reapplied if the AP is rebooted.
other Workrounds: Alternatively MTU size can be trimmed on the wireless client Ex:1200 bytes or On an upstream IOS router, which is between the client and the wired network, use "ip tcp adjust-mss", if unable to do these try setting "ip mtu" on the wired VLANs' default router interfaces.
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...