cable modem setup

Unanswered Question
Jun 19th, 2010

ok i recently got a router with 2 fast Eth ports, and im going to hook the router up into my cable modem, but i do not know if i should use the IP assigned from the cable modem (192.168.10.101) or if i should use my external IP address 172....

I also need help with what i should do for incoming and outgoing traffic, as in should i use a routing proto RIPv2 whatever.

I dont know how to set this up for use in my LAN, im going to have everyone go through this router so i need some help with the initial config.

Thanks

I have this problem too.
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ganeshh.iyer Sun, 06/20/2010 - 23:58

ok i recently got a router with 2 fast Eth ports, and im going to hook the router up into my cable modem, but i do not know if i should use the IP assigned from the cable modem (192.168.10.101) or if i should use my external IP address 172....

I also need help with what i should do for incoming and outgoing traffic, as in should i use a routing proto RIPv2 whatever.

I dont know how to set this up for use in my LAN, im going to have everyone go through this router so i need some help with the initial config.

Thanks

Hi,

You use ip assigned from cable modem and drop a default route towards the cable modem in your router and drop a reverse route in cable modem for your lan subnet towards router interface.

your traffic will flow without any problem towards outside and will have reverse route for incoming traffic also.

Hope to Help !!

Ganesh.H

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paintballer4lfe Mon, 06/21/2010 - 15:21

hmmmmm ok, could someone give me an example of the commands and such.

modem IP would be 192.168.100.2

LAN IP DHCP pool starting address: 192.168.1.12

reverse route ip?

external ip would be: 173.x.x.x

Thanks

ganeshh.iyer Mon, 06/21/2010 - 22:49

hmmmmm ok, could someone give me an example of the commands and such.

modem IP would be 192.168.100.2

LAN IP DHCP pool starting address: 192.168.1.12

reverse route ip?

external ip would be: 173.x.x.x

Thanks

Hi,

Check out the below link for router configuration guide and cable modem configuration documents

http://www.cisco.com/en/US/tech/tk86/tk89/technologies_q_and_a_item09186a0080094957.shtml

http://www.tele.pitt.edu/~telelab/labs/General%20Lab%20Documentation/pdf/GeneralLab%20Documentation~Cisco%20Router%20Configuration%20Tutorial~08.20.05.pdf

Hope to Help !!

Ganesh.H

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Posted June 19, 2010 at 12:09 PM
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