Re: [ClusterLabs] Can Bonding Cause a Broadcast Storm?

2016-11-15 Thread Digimer
On 15/11/16 04:25 PM, Eric Robinson wrote: > If a Linux server with bonded interfaces attached to different switches is > rebooted, is it possible that a bridge loop could result for a brief period? > We noticed that one of our 100 Linux servers became unresponsive and appears > to have

Re: [ClusterLabs] Can Bonding Cause a Broadcast Storm?

2016-11-15 Thread Andrei Borzenkov
16.11.2016 02:48, Eric Robinson пишет: > mode 1. No special switch configuration. spanning tree not enabled. I > have 100+ Linux servers, all of which use bonding. The network has > been stable for 10 years. No changes recently. However, this is the > second time that we have seen high latency and

Re: [ClusterLabs] Can Bonding Cause a Broadcast Storm?

2016-11-15 Thread Jeremy Voorhis
It's been a little while for me, but going by https://www.kernel.org/doc/Documentation/networking/bonding.txt it looks as if the driver sends one or more gratuitous ARPs out the active interface on state changes, which could be close to the root of the problem depending on how the switches are

Re: [ClusterLabs] Can Bonding Cause a Broadcast Storm?

2016-11-15 Thread Eric Robinson
mode 1. No special switch configuration. spanning tree not enabled. I have 100+ Linux servers, all of which use bonding. The network has been stable for 10 years. No changes recently. However, this is the second time that we have seen high latency and traced it down to the behavior of one

[ClusterLabs] Can Bonding Cause a Broadcast Storm?

2016-11-15 Thread Eric Robinson
If a Linux server with bonded interfaces attached to different switches is rebooted, is it possible that a bridge loop could result for a brief period? We noticed that one of our 100 Linux servers became unresponsive and appears to have rebooted. (The cause has not been determined.) A couple of