DDR Address Pools

[puckettg]

I am looking at a DDR strategy for 100+ remote locations.

Is there a way to have remote router initiate a PPP call to a core router and have it take the link address from the core router, instead of preconfiguring both ends using static routes?

All of the config examples I have found show static interfaces.

Thanks

[makchitale · Accepted solution]

Yes, that can be done....what are remote routers trying to connect over, ISDN or analog dialup? What is the core router platform?

http://www.cisco.com/warp/public/793/access_dial/dial_config_5142.html

The ip addesses can also be assigned using an external AAA server.

Thanks, Mak.

[puckettg]

Great. Thank you.

I anticipate using an AS5350 in the core with a 1721 and in some cases a 2600 in the edge. They will be using the integrated dial-up modem for analog dialup.

What command(s) are necessary in the 1721 or 2600 to have them negotiate for the IP address across this link?

Thanks

-Greg

[zahmed · Accepted solution]

Self-explainatory "ip address negotiated" under the corresponding dial interface. For the rest of the config commands, you ll find a lot of config examples under cco/tac.

~Zulfi

[makchitale · Accepted solution]

With integrated dial-up modems on the remote routers, can also do async multlink for bandwidth aggregation.

http://www.cisco.com/warp/public/793/access_dial/router2router.html

Thanks, Mak.

[tepatel · Accepted solution]

The best way to manage the ip address allocation to many locations, 100+ in your case, is via external AAA server. AAA server will give you added security as well as better control over the authentication, ip address management, user based access-lists etc.

Configuring locally on the code router (without AAA) also achive the same but managing 100s of users locally is little difficult.

For async dialout from 1721, 2600 routers, you can visit following url

http://www.cisco.com/warp/public/471/mod-aux-dialout.html

You can use "ip address negotiated" under the interface dialing out ..interface dialer 10 on that url.

To configure AS5350 for incoming async and isdn calls, pl. visit

http://www.cisco.com/warp/public/793/access_dial/dial_config_5142.html