I have found in openstack VxLAN MTU is 1450 and if i go and change with following command on all server my application start working.
ip netns exec qrouter-2c23f26a-09a4-4a58-b7af-1ec0ee4078fa ifconfig qr-12e51a7a-37 mtu 1500 so where and which option i should tune to make it permanent, i was reading about it and found following two option but not sure which one i should use to set only VxLAN MTU to 1500 path_mtu = 0 global_physnet_mtu = 1500 after changing this setting should i need to restart compute node or just neutron service? On Wed, Nov 9, 2016 at 4:33 PM, Rick Jones <rick.jon...@hpe.com> wrote: > On 11/09/2016 12:56 PM, Satish Patel wrote: >> >> If i enable Jumbo frames on openstack in that case do i need to change >> or enable anything on my external/physical network infrastructure? > > > Probably. > > In the most succinct terms, all nodes in the same "broadcast domain" > (anywhere reachable via layer 2 - aka ethernet - and switching rather than > layer 3 and routing) must have the same physical MTU. > > If you have end-nodes with JumboFrames enabled, the physical infrastructure > joining them at layer2 must also have JumboFrames enabled. > > rick jones > > >> >> On Wed, Nov 9, 2016 at 3:13 PM, Mohammed Naser <mna...@vexxhost.com> >> wrote: >>> >>> Are you using any tunnelling or are you directly attaching to your >>> physical network? >>> >>> If you're using tunnelling, I would recommend running jumbo frames on >>> your compute and network nodes so they can transport packets with size of >>> 1500. There is plenty of docs about this online that you can check. >>> >>> Sent from my iPhone >>> >>>> On Nov 9, 2016, at 11:06 AM, Satish Patel <satish....@gmail.com> wrote: >>>> >>>> We have 3 node cluster on Mikata openstack and we are using DVR >>>> network. Recently we build two puppetmaster server on openstack and >>>> put them behind Lbaasv2 load-balancer to share load but i found my >>>> none of client able to talk to correctly with puppetmaster server on >>>> openstack. After lots of research found openstack VM use mtu 1400 and >>>> my rest of puppet agent server who are not on openstack they used mtu >>>> 1500. >>>> >>>> as soon as i change puppet agent MTU size to 1400 everything started >>>> working. But just surprised why openstack use 1400 for VM there must >>>> be a reason like vxlan or GRE. >>>> >>>> So for experiment i change mtu 1500 on puppetmaster server on >>>> openstack but it didn't help. How do i fix this issue? >>>> >>>> _______________________________________________ >>>> 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 >> >> >> _______________________________________________ >> 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 >> > _______________________________________________ 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
