Re: [squid-users] MTU problem

Hi Amos,

But I can login and browser the Applications server without any issue
even if MTU set to 9000.

//Remy

Amos Jeffries wrote:
> 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

------------------------------------------------------------------------------
Disclaimer and Confidentiality

This material has been checked for computer viruses and although none has
been found, we cannot guarantee that it is completely free from such problems
and do not accept any liability for loss or damage which may be caused.
Please therefore check any attachments for viruses before using them on your
own equipment. If you do find a computer virus please inform us immediately
so that we may take appropriate action. This communication is intended solely
for the addressee and is confidential. If you are not the intended recipient,
any disclosure, copying, distribution or any action taken or omitted to be
taken in reliance on it, is prohibited and may be unlawful. The views
expressed in this message are those of the individual sender, and may not
necessarily be that of ISA.
Received on Tue Sep 15 2009 - 14:04:17 MDT