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IPsec 1800 ISR VPN traffic problems

Hi

I have just replaced a sonicwall device with a 1803W ISR and have a IPSEC VPN to a Cisco 3015 Concentrator, tunnel is up and working, but certain traffic doen not pass correctly. Http traffic times out and ODBC connections on port 3306 fail. however you can telnet on port 3306 sucessfully... Help

1 REPLY
Cisco Employee

Re: IPsec 1800 ISR VPN traffic problems

Sounds like a packet size issue. Try lowering down the TCP MSS on the LAN interfae of the router.

int Fa0/0

ip tcp adjust-mss 1452

exit

Lower down the value by 50 bytes each time till you get any success.

*Please rate if it helps.

-Kanishka

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