I can suggest SUN Systems' "Cluster" services. If the data and connectivity
is important enough to have HSRP and redundant switches, I would check out a
cluster of 2 or more Sun servers. This software suite will allow each
machine to keep an eye on each other and if one goes down, the other will
take over. It is not trivial to do but it is much easier than trying to
force the same IP on two different ports in the same machine with automatic
redundancy.
TCP/IP does not like two identical IP addresses on the Internet or on the
same subnet much less on the same server. Since I am surrounded by SUN
servers and Cisco routers, I will suggest that if you have "machismo" you
can try configuring one port with the ifconfig command and then use the
"unplumb" switch to deactivate it. Configure the next port with the same IP
and then activate it with the "plumb" switch. If this works and it is a big
IF, (I expect the TCP/IP stack to complain) you would still have the problem
of making it fail over automatically.
In addition, SUN has the ability to place network interfaces into "Interface
Groups" but these basically have different IP addresses acting as a group.
Much like a virtual address. That is also worth a try.
Lastly, multi NICs are basically for placing a device on two or more
subnets. If the hardware manufacturer says his NIC ports can all have the
same address please let me know. I would be very interested in obtaining a
few of them myself.
Winston
-----Original Message-----
From: Brian W. [mailto:[EMAIL PROTECTED]]
Sent: Saturday, November 11, 2000 1:01 AM
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: multiport nics or nic teaming
I have a friend that is trying to setup a situation like this.
router w hsrp-->2 switches--->2 ports on a multiport nic on a server.
He'd like the server to be a Solaris running Sparc. The part he wants to
accomplish that I couldn't answer is this. He wants each port to have the
same ip and for the other port to take over if 1 fails.
Any of you know of a site that outlines driver/hardware plans that have
worked??
Brian
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