[j-nsp] MTU issue between juniper routers

Doug Hanks dhanks at juniper.net
Fri Mar 25 14:17:11 EDT 2011


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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