Re: [squid-users] MTU problem

Mario Remy Almeida wrote:
> Hi All,
>
> WebServer Cofnig:
> OS: Centos 5.3 running on VM Ware connected to Nortel switch with MTU 1500
> Applications: Jboss-4.2.3
> Network MTU Setup to 9000
>
> Reverse Proxy Config
> OS: Centos 5.3 IBM x3350 Server Connected to Cisco Switch with MTU 1500
> Application: Squid 2.7
> Network MTU Setup to 9000
>
> Squid cannot connect with MTU 9000
>
> when MTU set to 1500 on the WebServer all fine
>
> //Remy
>

Sounds like a typical MTU situation. Forcing 9000 bytes through a 1500
byte port on the switch will result in failure. The switch will be
generating ICMP messages to signal the problem and cause automatic
packet reduction to kick in.

Unless of course you have a firewall that blocks ICMP messages or have
path MTU discovery turned off some other way anywhere down the chain of
software and devices.

Amos

-- 
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