Multi-homed routeing issue

[Joseph T. Duncan]

>> for the first packet:
>> data -> eth1 -(ipvs ballancer)- eth1 -> real server
>> 
>> subseqent packets would then do the following:
>> data -> eth0 -(ipvs ballancer)- eth0 -> real server
>
> do you have /32 on the VIP on the director and realservers?
> (you probably do or it wouldn't work).

Cant specifiy a /32 on the windows boxes.. it works just fine with /24, 
windows creates two sets of routes (eth0 and lo) for the subnet.. but the 
lo routes have no exit gateway device and windows automagicly sets a 
fiarly high metric (weight) on that route, so everything goes over the 
real interface anyway.

on the director I have it set up as a /24 on the vip. I went ahead and 
tried setting the vip with /32 (and gave the machine a full reboot) and it 
still had the same behavour as with /24 (so have reverted to /24 for the 
time being)

> It would be simpler to have just one NIC with the VIP and
> unplug the other one (or put it on and administrative network)

I cant have one nic with the vip, or the traffic for doing the weight 
tables gets blackholed on the realservers.

I started off with eth0 being the vip, and eth1 being a diffrent rip. 
however all snmp and icmp then use vip as the return address, sence the 
realservers also have the vip assigned to them, they dont reply ;p

If one were to setup RIP on eth0 and VIP on eth0:1, outbound traffic 
(snmp -> realserver, icmp -> realserver) would the outbound traffic then 
get the RIP set to the return address still?

> it's not breaking anything? If not you can leave it alone.

it isnt breaking anything, and I can leave it as it is. It would nice to 
isolate traffic to a specific interface. (it throughs off stats gathering 
stuff done on the switch)

-Joseph
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Joseph T. Duncan                Joseph.Duncan at orst.edu
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