Lewick, Taylor wrote:
Okay, I realize this config may not be technically supported, but want
to know if it should work.
I have 3 sunray servers running SRSS 3.1 with Windows Connector
software.
I set up two of the servers on the same subnet in a failover group.
Everything works great.
Network config is no interconnect configuration, just using default IP
addresses with mulitcast for FoG communication.
A few days later attempt to add the third server to failover group.
This server is in another building on a different subnet. Have verified
with network guys that multicast should route between across the WAN.
Run the utreplica -p -a on primary, and utreplica -s on secondary. Also
run utfwsync on secondary.
Everything completes, no errors, but when I run utgstatus on the primary
server, it only shows it and the secondary on same subnet. When I run
utgstatus on new secondary, it only shows itself.
You never mentioned the group signature. That also needs to match. Check
that /etc/opt/SUNWut/gmSignature is the same on all hosts, and if it
isn't use
utgroupsig to change it as necessary. In SRSS 4.0, untrusted members of
a FOG
don't seem to show up utgstatus output, so you can't tell if you have a
network
issue or a configuration issue. Prior to 4.0, they would show up
in the utgstatus output but without the "T" flag indicating that they were
not part of the FoG (I'm hoping we can restore the old behavior,
which was quite useful for such problems). So if you're not seeing them,
the multicast packets aren't traveling over the subnets, as you suspected.
Utreplica -l on primary does show all three servers, and when run on new
secondary it does show the correct primary.
Snooping the interface for multicast and port 7009 only shows multicast
packets staying on the same subnet.
My question is If I can work out with network team why multicast packets
aren't traversing the WAN then a WAN distributed FoG should work with
this setup correct?
It certainly should. I presume you have checked that the
/etc/opt/SUNWut/auth.props
enableMulticast is not set to "false", that you haven't set a different
multicastAddress,
and that the multicastTTL is sufficiently high to reach across the
subnets (experiment
by setting it to 100 or something temporarily, then reduce it to the
size necessary).
-Bob
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