Hi, all I'm having an issue creating a route for a specific IP
address. I need all info coming from a specific IP (172.30.10.85/26)
to use 172.30.10.100 as it's gateway, but everything else on that
segment (172.30.10.64/26) to use the standard gateway at
172.30.10.65. To make it all the more interesting 172.30.10.85 is a
virtual IP addressed assigned to ce2:1. I have tried just adding a
route with destination 172.30.10.100 and gateway 172.30.10.85, but it
was attempting to send packets out of ce0 and not ce2. Is there a way
to manually configure the interface to be used also? I'm pretty
confused here. The network configuration stats are below.

Thanks,
Ben..

utsocs1 root#netstat -rn

Routing Table:
Destination Gateway Flags Ref Use Interface
-------------------- -------------------- ----- ----- ------ ---------
10.10.10.40 10.10.10.40 UGH 1 0
10.10.11.40 10.10.11.40 UGH 1 0
10.10.11.3 10.10.11.3 UGH 1 9587
10.10.10.3 10.10.10.3 UGH 1 11119
172.16.193.2 172.16.194.5 UGH 1 4985
0.0.0.0 172.30.10.85 UG 1 0
172.16.194.4 172.16.194.6 U 1 3242 ce8:2
10.10.10.0 10.10.10.2 U 1 11933 ce1
10.10.10.0 10.10.10.40 U 1 0 ce1:1
10.10.11.0 10.10.11.2 U 1 9589 ce5
10.10.11.0 10.10.11.40 U 1 0 ce5:1
172.30.10.0 172.30.10.17 U 1 7110 ce0
172.30.10.64 172.30.10.80 U 1 6662 ce2
172.30.10.64 172.30.10.85 U 1 0 ce2:1
172.16.0.128 172.16.0.129 U 1 10612 ce4
172.16.1.0 172.16.1.1 U 1 10600 ce8
172.16.193.0 127.0.0.1 U 1 0 lo0
default 172.30.10.65 UG 1 12370
default 172.30.10.1 UG 1 12341
127.0.0.1 127.0.0.1 UH 244206164 lo0
utsocs1 root#ifconfig -a
lo0: flags=849<UP,LOOPBACK,RUNNING,MULTICAST> mtu 8232
inet 127.0.0.1 netmask ff000000
lo0:1: flags=8849<UP,LOOPBACK,RUNNING,MULTICAST,PRIVATE> mtu 8232
inet 172.16.193.1 netmask ffffffff
ce0: flags=843<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.30.10.17 netmask ffffffc0 broadcast 172.30.10.63
ether 0:3:ba:dc:ec:47
ce1: flags=843<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.10.10.2 netmask ffffffc0 broadcast 10.10.10.63
ether 0:3:ba:dc:ec:47
ce1:1: flags=843<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.10.10.40 netmask ffffffc0 broadcast 10.10.10.63
ce2: flags=843<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.30.10.80 netmask ffffffc0 broadcast 172.30.10.127
ether 0:3:ba:dc:ec:47
ce2:1: flags=843<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.30.10.85 netmask ffffffc0 broadcast 172.30.10.127
ce5: flags=843<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.10.11.2 netmask ffffffc0 broadcast 10.10.11.63
ether 0:3:ba:dc:ec:47
ce5:1: flags=843<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.10.11.40 netmask ffffffc0 broadcast 10.10.11.63
ce9: flags=842<BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.30.10.18 netmask ffff0000 broadcast 172.30.255.255
ether 0:3:ba:dc:ec:47
ce8: flags=8843<UP,BROADCAST,RUNNING,MULTICAST,PRIVATE> mtu 1500
inet 172.16.1.1 netmask ffffff80 broadcast 172.16.1.127
ether 0:3:ba:dc:ec:47
ce8:2: flags=8843<UP,BROADCAST,RUNNING,MULTICAST,PRIVATE> mtu 1500
inet 172.16.194.6 netmask fffffffc broadcast 172.16.194.7
ce4: flags=8843<UP,BROADCAST,RUNNING,MULTICAST,PRIVATE> mtu 1500
inet 172.16.0.129 netmask ffffff80 broadcast 172.16.0.255
ether 0:3:ba:dc:ec:47

On Feb 28, 8:18 pm, "bozothedeathmachine"
<bozothedeathmach...@gmail.com> wrote:
> Hi, all I'm having an issue creating a route for a specific IP
> address. I need all info coming from a specific IP (172.30.10.85/26)
> to use 172.30.10.100 as it's gateway, but everything else on that
> segment (172.30.10.64/26) to use the standard gateway at
> 172.30.10.65.

Aren't those the same subnet? I'd have thought you'd need to go to at
least /28 to distinguish them.

bozothedeathmachine skrev:
> Hi, all I'm having an issue creating a route for a specific IP
> address. I need all info coming from a specific IP (172.30.10.85/26)
> to use 172.30.10.100 as it's gateway, but everything else on that
> segment (172.30.10.64/26) to use the standard gateway at
> 172.30.10.65. To make it all the more interesting 172.30.10.85 is a
> virtual IP addressed assigned to ce2:1. I have tried just adding a
> route with destination 172.30.10.100 and gateway 172.30.10.85, but it
> was attempting to send packets out of ce0 and not ce2. Is there a way
> to manually configure the interface to be used also? I'm pretty
> confused here. The network configuration stats are below.
>

Im confused... I'm no network guru but I though a 26 bit netmask would
give you four networks...

Network Host-Range Broadcast
..00 172.30.10.0 001-062 063
..01 172.30.10.64 065-126 127
..10 172.30.10.128 129-190 191
..11 172.30.10.192 193-254 255

and that would put both the .85 and the .100 address inside the .64
network which would mean using that nets gateway out. Your .64 net
has two default gateways defined in the list...

172.30.10.64 172.30.10.80 U 1 6662 ce2
172.30.10.64 172.30.10.85 U 1 0 ce2:1

both going out on the same physical interface, ce2
you were seing it sending packets on ce0?

you also got two default routes in your list... so which is it to use on
unknown ip's?, since you see packages coming on ce0 I assume the ce0
default is used...

Very strange setup to me, what are you trying to accomplish?

/Johan A

"bozothedeathmachine" <bozothedeathmachine@gmail.com> writes:
> Hi, all I'm having an issue creating a route for a specific IP
> address. I need all info coming from a specific IP (172.30.10.85/26)
> to use 172.30.10.100 as it's gateway, but everything else on that

Routing doesn't have a "come from" option. Packets are forwarded
based on the IP destination address alone.

If you need to do something more complex than that, then you probably
need to look into IP Filter's 'to' mechanism. See ipfilter(5) and
ipf(4).

> segment (172.30.10.64/26) to use the standard gateway at
> 172.30.10.65. To make it all the more interesting 172.30.10.85 is a
> virtual IP addressed assigned to ce2:1. I have tried just adding a
> route with destination 172.30.10.100 and gateway 172.30.10.85, but it
> was attempting to send packets out of ce0 and not ce2. Is there a way
> to manually configure the interface to be used also? I'm pretty
> confused here. The network configuration stats are below.
[...]

> 0.0.0.0 172.30.10.85 UG 1 0

That's a suspicious entry. It looks like someone did a "route add
0.0.0.0/32 172.30.10.85" on this system. That's unlikely to be
helpful.

Perhaps it would help to explain what higher-level problem you're
trying to solve.

--
James Carlson, Solaris Networking <james.d.carlson@sun.com>
Sun Microsystems / 1 Network Drive 71.232W Vox +1 781 442 2084
MS UBUR02-212 / Burlington MA 01803-2757 42.496N Fax +1 781 442 1677