On Thursday, 28 April 2016 10:46:31 AM AEST Russell Coker via luv-main wrote:
> but "ping -M want -s 1400 8.8.8.8" works without any problems I usually use "-M do" for that sort of testing. The "tracepath" program will also show you the MTU along the route (as long as UDP isn't being blocked). ...and from bitter experience I would suggest doing the same test in the reverse direction; at work we were having problems for a while with sites outside using jumbo frames until we learnt that the uni had asymetric routing and the return path had a different MTUon one segment to the incoming path. Oh, and some bright spark had decided that they could save IP's by using RFC1918 addresses on those segments and so the router was sending out PMTUD ICMP's with addresses that would get dropped at the border. :-/ Good luck! Chris -- Chris Samuel : http://www.csamuel.org/ : Melbourne, VIC _______________________________________________ luv-main mailing list luv-main@luv.asn.au https://lists.luv.asn.au/cgi-bin/mailman/listinfo/luv-main
