Configuring router with multiple subnetworks on same physical port

I need to configure a large scale network.
The network includes Layer 2 networks, with routers in between.
There are two types of data source, each generates a different type of
data. data.
For security reasons, I would like to differentiate the traffics on
the layer 3 level.
I would like each of the of the sources to use a different layer 3
subnet.
The question is can I configure a router's port to carry two
different

Thanks,
Jane

On Mon, 13 Oct 2008 12:46:59 -0700 (PDT), Jane wrote:
> I need to configure a large scale network.
> The network includes Layer 2 networks, with routers in between.
> There are two types of data source, each generates a different type of
> data. data.
> For security reasons, I would like to differentiate the traffics on
> the layer 3 level.
> I would like each of the of the sources to use a different layer 3
> subnet.
> The question is can I configure a router's port to carry two
> different

Two different... what?

--
* John Oliver http://www.john-oliver.net/ *

On Oct 13, 10:44*pm, Allen Kistler <ackist...@oohay.moc> wrote:
> John Oliver wrote:
> > On Mon, 13 Oct 2008 12:46:59 -0700 (PDT), Jane wrote:
> >> I need to configure a large scale network.
> >> The network includes Layer 2 networks, with routers in between.
> >> There are two types of data source, each generates a different type of
> >> data. data.
> >> For security reasons, I would like to differentiate the traffics on
> >> the layer 3 level.
> >> I would like each of the of the sources to use a different layer 3
> >> subnet.
> >> The question is can I configure a router's port to carry two
> >> different
>
> > Two different... what?
>
> Probably subnets.
>
> The answer is maybe. *They have to be non-overlapping, of course.
> But the features of the router depend on the

Thanks for the answer.
Here is a sketch of the what I need.
Can you tell what servers may support it, and/or where can I find any
documentation of such configuration?

host 1 - type A: -----------------
IP 10.10.10.2 |
subnet: 255.255.255.0 |
L2 Switch --
| |
host 2 - type B: -----------------| |
IP 20.20.20.3 |
subnet: 255.255.255.0 |
R
host 3 - type A: ----------------- |
IP 10.10.11.3 | |
subnet: 255.255.255.0 | |
L2 Switch --
|
host 2 - type B: -----------------|
IP 20.20.21.3
subnet: 255.255.255.0

Thanks,
Jane

Jane wrote:
> On Oct 13, 10:44 pm, Allen Kistler <ackist...@oohay.moc> wrote:
>> John Oliver wrote:
>>> On Mon, 13 Oct 2008 12:46:59 -0700 (PDT), Jane wrote:
>>>> I need to configure a large scale network.
>>>> The network includes Layer 2 networks, with routers in between.
>>>> There are two types of data source, each generates a different type of
>>>> data. data.
>>>> For security reasons, I would like to differentiate the traffics on
>>>> the layer 3 level.
>>>> I would like each of the of the sources to use a different layer 3
>>>> subnet.
>>>> The question is can I configure a router's port to carry two
>>>> different
>>> Two different... what?
>> Probably subnets.
>>
>> The answer is maybe. They have to be non-overlapping, of course.
>> But the features of the router depend on the
>
> Thanks for the answer.
> Here is a sketch of the what I need.
> Can you tell what servers may support it, and/or where can I find any
> documentation of such configuration?
>
> [snip]

It's not a question of the servers (or Linux or Windows or DOS or OS/400
or whatever). It's a question of the network itself, independent of OS.

Generally you'd put the different subnets on different vlans. That's a
switch thing and a router thing, not a server thing or a Linux thing.
You don't have to do it that way, but that's the usual way. There are
reasons for it.

Then you'd define multiple IP addresses on the router interfaces.
Alternatively you'd trunk the switches into the router and define
multiple virtual interfaces on the router.

Again, none of that has anything to do with the servers and the OS. It
depends solely on the capabilities of your switches and routers. If
you're really designing a "large scale network," then you (specifically
you) need to find someone (a local person, not a newsgroup) who knows
your brand of switches and routers. At the very least you should ask
your questions in comp.dcom.*, since that's where discussions on Cisco,
Nortel/Motorola, Extreme, etc., take place.

HTH

On Oct 13, 12:46*pm, Jane <yael.luz.hal...@gmail.com> wrote:

> I need to configure a large scale network.
> The network includes Layer 2 networks, with routers in between.
> There are two types of data source, each generates a different type of
> data. data.
> For security reasons, I would like to differentiate the traffics on
> the layer 3 level.
> I would like each of the of the sources to use a different layer 3
> subnet.
> The question is can I configure a router's port to carry two
> different

Layer 3 differentiation doesn't provide any security. Come up with a
sensible design, ideally by employing someone with experience in
designing large scale networks.

DS

Am Mon, 13 Oct 2008 12:46:59 -0700 schrieb Jane:


> I would like each of the of the sources to use a different layer 3
> subnet.
> The question is can I configure a router's port to carry two
> different
>
> Thanks,
> Jane

vlan is a better choice