The ATM connection (provider) is probably limiting payload size to 1500. They may doing some form of traffic policing - common these days. Ethernet LAN MTU is 1500 so there really isn't a need to send greater than that across ATM in this case.
--- Sean Kim wrote: > Hello, > > My company has this 3rd party connection through > ATM. The ATM TA has an > ethernet outlet which is and connected to our core > router. Our parner > company is connected with anATM module on their > router. > > Recently, I was told by our partner company that > they were running ping test > and they could not ping my ethernet interface (on > the core router) with > datagram over 1500 byte. > > From both the router itself and my workstation, I > pinged my own interface > with 1600 byte, and I was able to ping it. But when > I pinged my partner > company's interface with 1600 byte, it failed. > > In general it seems that pinging from other nodes, > there is no problem, but > sitting on the routers itself, pinging the other > routers interface with the > datagram size of over 1500 is failing. > > There isn't any problem with connection of > performance. But I am very > curious about why this is happening. > Does anybody have any idea why this would happen? > Or can anybody give me a > clue as to how to approach this problem? > > Thank you in advance. > > Sean Kim [EMAIL PROTECTED] __________________________________________________ Do you Yahoo!? Yahoo! Shopping - Send Flowers for Valentine's Day http://shopping.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=63089&t=63085 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
