Multihomed Server With 2 NIC's

[Richard]

I have a win2k server with 2 NIC's, one nic has been
assigned a public IP address (on this nic we will be
receiving multicast data and also communicating using TCP
via a cisco 1721 router) and the other a private IP (which
points to a win2k network and this includes DNS, MSMQ, and
AD).

I have setup RRAS on this server as a Network router and I
have added the IGMP Protocol with the private interface
configured as an IGMP Router and the Public Interface has
been configured as an IGMP Proxy.

Receiving multicast data via the router works fine, but
making a tcp connection via the router times out.

Is there a problem with RRAS?
Is there a problem with the 2 NIC's both having gateway
addresses?

Please advise

 

[Herb Martin]

Is there a problem with the 2 NIC's both having gateway

addresses?

This may not be your problem but it's normally not the right thing
to do.

You can only have "one default gateway" ACTIVE -- unless it is
down the other is irrelevant. Unless you mess with the costs, you
get ONE of these (semi-randomly) as the actual default and my
guess is you got the "wrong one".

Actually, it's not random -- rather first NIC takes precedence -- but
that is so unpredictable for most people it FEELS random. Remove
the default gateway value for the INTERNAL NIC.

If you need to route internally (through other internal routers), you will
need to add Static Routes (prefer the RRAS add routes over "route add"
command -- if you wish to use the command line, then use NetSH.exe.)

Of course, if you have a really complicated internal network you can
use RIP or OSPF on your internal routers instead but this is seldom
necessary for small networks of only a few routers/subnets.

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