[j-nsp] MTU issue between juniper routers

[OBrien, Will]

Have you set the MTU on both logical and physical interfaces?

On Mar 25, 2011, at 1:17 PM, Doug Hanks wrote:

> Hmm. You can do it the good, old fashioned way with ping and the do-not-fragment bit ;)
> 
> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of meryem Z
> Sent: Friday, March 25, 2011 9:59 AM
> To: juniper-nsp at puck.nether.net
> Subject: [j-nsp] MTU issue between juniper routers
> 
> 
> Hello Community,
> 
> I have the following issue with MTU between some P-PE routers:
> 
> - MTU on Ge interface is configured to 4484 on both ends of the links. but ping (from P to PE ) greater than 1600 bytes fails.
> - I checked interfaces configuration , and also did a "show interfaces" to verify the effective mtu value used. everything is ok.
> - i'm suspecting some node on the transmission path between the P and the PE configured with the default value of 1500 for GE , but i couldn't find any equivalent command to the linux tracepath on juniper routers.
> 
> 
> Thanks and have a nice WE.
> 
> 
> 		 	   		  
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Will O'Brien
University of Missouri, DoIT DNPS
Network Systems Analyst - Redacted

obrienh at missouri.edu