Cisco router 1721 plus 2 serial wics and two ips on fa0

Posted on 2005-05-11
Last Modified: 2010-04-10
Please help,,

I have two serial wics. One at 64kps and the other at 384kps.

I have two subnets of public IPs.

What I would like to do is force 1 subnet thru the first serial and the 2nd subnet thru the second serial.

My fa0 is using a secondary IP.

Thanks for your help
Question by:arturmmaia
    LVL 4

    Expert Comment

    So what is te problem? Give IP add from 1 subnet to WIC1 and IP address from 2 subnet to WIC2. Why you have to have two addresses on fa0? Please, provide more information about your topology. You wan't want to have the same subnets on different interfaces (wic - fa0) unless ...?


    Author Comment


    I have two subnets which are public IPs.

    With router rip and ip route serial 0.1, what happens is if I try to telnet an IP on WIC2 I dont get a reply.
    LVL 43

    Accepted Solution

    Try this (for example):

    WIC 1 -
    WIC 2 -

    Inside Subnet 1 -
    Inside Subnet 2 -

    interface fastethernet0/0
    ip address
    ip address secondary
    ip policy route-map traffic

    interface serial0/0.1
    ip address

    interface serial1/0.1
    ip address

    route-map traffic permit 10
    match address 1
    set interface serial0/0.1

    route-map traffic permit 20
    match address 2
    set interface serial1/0.1

    access-list 1 permit
    access-list 2 permit

    Subnet 1 traffic ( will be routed out interface serial0/0.1 and Subnet 2 traffic ( will be routed out interface serial1/0.1.

    Author Comment


    Works like a charm. Thanx alot.


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