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Help configuration IP routing 1720

We have a 1720 with serial port and one ethernet card. Used to provide frame relay internet access to internal networks. 192.168.0.0. I Would like to provide routing to additional subnets ie 192.168.1.0 Can anyone help with configuring a 1720 router to provide addtional ip address ranges to the existing range for the serial port eg existing address 211.84.192.152 to 155 (255.255.255.252)New range 211.84.210.136 - 143 . I Would like to use the additional IP addresses to connect Qty 2 PIX501 firewall routers to connect the new subnets and provide individual and seperate internal networks

eg 192.168.(0 - 2) .0.

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Re: Help configuration IP routing 1720

Here are a couple of links for understanding subnetting:

http://www.cisco.com/techtools/ip_addr_help.html

http://www.cisco.com/warp/public/701/8.html

You’ll just have to modify your “ip route” lines slightly for the serial interface change. Keep in mind that if you are adding two PIX firewalls, using one Ethernet interface for both will be very self defeating.

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