-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 02/10/13 17:33, James Page wrote: > On 02/10/13 17:24, Gangur, Hrushikesh (R & D HP Cloud) wrote: >>> http://techbackground.blogspot.co.uk/2013/06/path-mtu-discovery-and-gre.html > >>> Yeah >>> > - I read that already: > > sudo ip netns exec qrouter-d3baf1b1-55ee-42cb-a3f6-9629288e3221 > traceroute -n 10.5.0.2 -p 44444 --mtu traceroute to 10.5.0.2 > (10.5.0.2), 30 hops max, 65000 byte packets 1 10.5.0.2 0.950 ms > F=1500 0.598 ms 0.566 ms > > The PMTU from the l3 gateway to the instance looks OK to me.
I spent a bit more time debugging this; performance from within the router netns on the L3 gateway node looks good in both directions when accessing via the tenant network (10.5.0.2) over the qr-XXXXX interface, but when accessing through the external network from within the netns I see the same performance choke upstream into the tenant network. Which would indicate that my problem lies somewhere around the qg-XXXXX interface in the router netns - just trying to figure out exactly what - maybe iptables is doing something wonky? - -- James Page Ubuntu and Debian Developer james.p...@ubuntu.com jamesp...@debian.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJSTJTzAAoJEL/srsug59jDXIoQAIqd5Msoyubvs0Y270PeYHwJ vsmjw0Fzyf+428KTo2RcfWKGarkBmn/3kbygzPJH2aVHZx/+s2dHY1YJu1gH7B4i 0yCIQZWhur+CdXN7QplqhJLgq+ZVyC4/GV4RA/C2NpHzGZg/avx5BPMhzfnSnRtB Xy49umZkG90622WhW2hlXW5J06YIEsO1EuwonXxIXzXu2CYsvLKk2GguU7tejC7Q DfW36gkCVv2z/71vVXgpjNt76MNsA8IVmaB4vv08Ai4yyUMNpvUc/SWu5DwzuoZx vGxkCFv419rzO64L6EbYcmnUBXa+wFnSTp8hCNfl8fsDMJb6kynwLAWqCiIKKS8/ ozZfZ7eQ4CmyctckXjxBchmybh0aMRrzYANvE/9vkub3aAF7fpeCus+Nw59TLe62 tlfAZKPhmLikGbbIia6SX6j9PS9x2mSagfinjQs0BHDV0Pyww5qotWbWLbCFD7Cz yhLjAGAhOnB5CQlEqX9XdM2/YGvhTIzLMMkPeQVicNlUXx/TXqJ2cvcIjdoBASFC i6lfhhwXU9n9zi0THOxHQozksaMKc/diWULkcewqdbqYgLbZ5x8+SADf2Zd7WFzZ MKe54y7fmhKWnL+zTN9tLwG8qnLWpIWJ5M4V99a8HL6zgTyeRJ/9bgMsl/2ghTra EGO8vL6+zj8cAYTFB3oF =Fp5N -----END PGP SIGNATURE----- _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack