cofiguring an ethernet interface

[nammoussa]

I have a cisco 1700 Router with one ethernet interface and two serial wan.

the first wan is used to connect two distant agencies. Now i want to connect to another companie over the second wan, but this company askes me to use different IP adressing. But i have only one ethernet interface.Can you tel me which solution is better?

And if i can use two different sub-ethernet interfaces?

Thank you !!!

[amit-singh]

Hi,

If you dont have another ethernet port you can do it using 2 ways :

1. Define a secondry IP on the ethernet interface for your second subnet.

2. Define the trunk between the switch and the router interface and create the sub-interfaces.

Use PBR to effictively route the traffic between your different customers otherwise your LAN users will be able to access the other customers.

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fqos_c/fqcprt1/qcfpbr.htm

HTH,

-amit singh