Networks

Ask something
Discussion Locked

Frac T1 Connectivity

0 helpful
5 replies

by keelhan

Closed to new repliesThis discussion is closed. It stays readable, but it takes no new replies.

Simple scenario:
i need to hook up 4 channels to local network.
I was told to use cisco router ( 1720 ? )
and adtran CSU/DSU ( phone system in place )
Since i have no experience with Cisco Do you have suggestion what IOS i should use if i am going to use NAT on that network. Should i use firewall IOS? Also what feature cards and cables do i need. - I am trying to find a source where it is all expalained but no luck.

5 replies

by Member 20548194

the cisco 1720 can come with internal csu/dsu you can get 2 internal. You can also get 4 by using externals. cisco also has it's own ios which I suggest. Nat works just fine on the 1720 series. The best location for info on cisco is to try to get a hold of a cisco tech. 1-800-888-8187

by ebob

The Cisco 1700 series is a good choice.

Normally, I would recommend getting the CSU/DSU module inside the router (WIC-1DSU-T1). Then a straight ethernet patch cord hooks you up to the fT1.

You should make sure your 1720 comes with at least IOS 12.1. This supports NA and PAT.

You ask if you should use the Firewall IOS. You have to provide that answer. If the "WAN" connection is to the Internet, and if you are not going to be implementing a REAL FIREWALL (e.g., Cisco PIX) behind this router, then the answer is YES. And when you do so, make sure your 1720 has at least 20 MB Ram.

Your LAN connection also needs to be considered. Assuming an Ethernet, then another patch cord into your LAN's switch or hub get's you running.

The router ships with a cable to plug into the console port for initial configuration. You should download Config Maker (if it doesn't ship with the router) from the Cisco website to get an initial config. Then you can manually massage it from there.

By the way, the very best source for Cisco info is CCO.CISCO.COM. You can access a fair bit of information without signing on. Alternatively, you can ask your Cisco reseller to set you up with a CCO account.

This discussion is closed to new replies.