On Solaris 8/9 Sparc:

If I have two active TPC/IP interfaces, one 100 Mbit and one 1000 Mbit,
what do I do to ensure the 1000 Mbit is the primary interface without
dropping the 100 totally?  I need the output speed.

Thanks,

ChrisS

ChrisS wrote:
> On Solaris 8/9 Sparc:
> 
> If I have two active TPC/IP interfaces, one 100 Mbit and one 1000 Mbit,
> what do I do to ensure the 1000 Mbit is the primary interface without
> dropping the 100 totally?  I need the output speed.

On Solaris, packets get routed purely by IP number.  That means if
the gigabit interface is on the right network, the packets will go
through it.  But if the 100 megabit interface is on the right network
to get to the packets' destination, they'll go through it.

Things are more complicated if you put them both on the same network,
and I forget exactly what happens then.  I think Solaris will spread
outgoing packets between them, although I'm not sure if it will do
so equally.  If the two interfaces are on the same network, I *think*
you may be able to steer outgoing packets away from the slower one
by changing its metric to higher number, but that's just a guess.

   - Logan

yes, both NICS are on the same subnet, and they are not IPMPed or
Trunked.  Though IPMP is an option, I holding off on that for now.
Solaris, by default does not "load balance OUT" unless you IPMP or
Trunk.  Trunk being the best of all worlds in regards to speed, high
avaialability and load balancing IN and OUT.  IPMP only is an OUT load
balance.

ChrisS <chris.scarff@gmail.com> wrote:
> yes, both NICS are on the same subnet, and they are not IPMPed or
> Trunked.  Though IPMP is an option, I holding off on that for now.
> Solaris, by default does not "load balance OUT" unless you IPMP or
> Trunk.  Trunk being the best of all worlds in regards to speed, high
> avaialability and load balancing IN and OUT.  IPMP only is an OUT load
> balance.

You don't want to use both 100 and 1000 A/A with IPMP.

Set them up as failover.  Create only one public IP, and put it on the
1000.  Then you can use the 100 as a failover if the 1000 goes down.

-- 
Darren Dunham                                           ddunham@taos.com
Senior Technical Consultant         TAOS            http://www.taos.com/
Got some Dr Pepper?                           San Francisco, CA bay area
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