Hello!
We are having a bit of a strange performance issue with a new site that I hoping someone might have seen before.
We have a remote site that connects back to our primary site using a GRE through IPsec. Devices on this site are having severe performance issues with web traffic files shares etc. I have attempted to alter ip mtu and tcp mss settings but it has made no difference; I have tried the recommended MTU 1420 MSS 1380 along with lots of other combinations.
If a device connects to the wireless, Cisco, the performance issues are completely removed. I checked the settings for MTU and MSS for the capwap tunnel for the AP and tried to match them on the GRE tunnel but again made no difference. Telephony is functioning fine from this site.
Anyone seen anything like this before?
Thanks!
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