How to determine asymmetric routing issue when ping target not working

zousheng · 12-13-2014, 05:47 AM

Hi,

Recently we met one issue, ping one target server is not working, at last network team identify it's asymmetric issue. Just wondering if there is a way to judge the asymmetric routing issue from linux terminal perspective instead of router or switch? thanks

unSpawn · 12-14-2014, 04:00 AM

It shouldn't be an issue (maybe explain your issue, eh?) unless your get state problems with network(ed) devices due to asymmetry. Run a trace (I prefer tcptraceroute) from both source to destination and the reverse.

zousheng · 12-14-2014, 06:54 AM

Thanks for your answer, but I don't have access to the target (which is firewall gateway, only network team has access), so I can only traceroute or tcptraceroute from our linux server.

unSpawn · 12-14-2014, 07:36 AM

Well then ask your network team to tcptraceroute for you of initiate it from a machine behind the firewall gateway...