On 09/01/12 13:33, Rajagopal Swaminathan wrote:
Switches used for this purpose are best completely isolated from the rest of
the network and multicast traffic control should be DISABLED.
I distinctly remember asking the network guys Multicast mode to be on
for the Heartbeat network (for the clusters that I have built).
You need multicast.
What you don't want, is any form of filtering based on packet rates
(broadcast/multicast rate limiting). This gets in the way.
I can't emphasise enough that the heartbeat equipment is best separated
from everything else. A spanning tree rebuild initiated elsewhere in the
LAN may be enough to cause an outage long enough to generate a fence event
(Ethernet fabric switching is spreading, but spanning tree will be
around for quite a while yet)
--
Linux-cluster mailing list
Linux-cluster@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/linux-cluster
