it is a routing problem mostly,
Cisco will not let you put two interfaces into the same network.
Consider any routing process.
Normally you add a network with the command: network a.b.c.d (and more if
OSPF)
Say you were allowed to have 2 interfaces in a.b.c.d, a packet comes in for
that network - which interface does it go to?
How would you tell a packet from Int A to go to Int B in the same subnet? A
local host would consider that since the destination is in the same subnet
that it is local and it wouldn't even leave the segment. It
wouldn't go the gateway.
The "way" around this is to use different subnets for the wan and lan
portions of the network.
Hope this helps.
Kevin Wigle
----- Original Message -----
From: "Devrin Gaskin" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, November 22, 2000 8:07 AM
Subject: Asigning ip addresses
> I have a customer that sent me this ip addressing scheme:
> distant-end serial int :207.102.99.132
> their serial int :207.102.99.133
> their ethernet: 207.102.99.134
> host on their side:207.102.99.135
> all using the 255.255.255.192 mask
> When I try to use this addressing scheme on the router I get the error
> message that the subnets overlap. Why can't the lan and wan be on the same
> subnet? What are the ways around this?
>
> Devrin Gaskin
> E-mail [EMAIL PROTECTED]
>
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