Public bug reported:
openstack is installed with ubuntu 14.04, running siege tool/ssh/iperf
will be failed if overlay vm is using default MTU 1500, after change MTU
to 1450, then issue is fixed.
1. create LB pool and vip using same subnet (one-arm)
2. add 1 backend server and 1 client.
3. running sige tool/iperf/ssh between client and server. >>>>>it will be
failed
4. Change MTU on client and server to 1450. >>>successful.
without LB,no need to change MTU, there is no such issue.
Another workaround is to change all underlay interface MTU to more than
1500. e.g. 9000
** Affects: neutron
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1498356
Title:
lbaas: SSH/Iperf/Siege traffic failed with default MTU 1500.
Status in neutron:
New
Bug description:
openstack is installed with ubuntu 14.04, running siege tool/ssh/iperf
will be failed if overlay vm is using default MTU 1500, after change
MTU to 1450, then issue is fixed.
1. create LB pool and vip using same subnet (one-arm)
2. add 1 backend server and 1 client.
3. running sige tool/iperf/ssh between client and server. >>>>>it will be
failed
4. Change MTU on client and server to 1450. >>>successful.
without LB,no need to change MTU, there is no such issue.
Another workaround is to change all underlay interface MTU to more
than 1500. e.g. 9000
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https://bugs.launchpad.net/neutron/+bug/1498356/+subscriptions
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