INTELLIGENT WORK FORUMS
FOR COMPUTER PROFESSIONALS

Member Login

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips now!

Talk With Other Members
Be Notified Of Responses
To Your Posts
Keyword Search
One-Click Access To Your
Favorite Forums
Automated Signatures
On Your Posts
Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

LINK TO THIS FORUM!

Tek-Tips LinkedIn^® Group

Join our
LinkedIn^® Group!

Hook up with past and present colleagues and classmates quickly.

Partner With Us!

"Best Of Breed" Forums Add Stickiness To Your Site

(Download This Button Today!)

Feedback

"...I have found your site brilliant. What makes it good are the people that contribute to the site..."

More...

Geography

Where in the world do Tek-Tips members come from?

Click Here To Find Out!

Tek-Tips Shirts!

Get your
Tek-Tips Forums
SWAG here!

Home > Forums > Communications Rack > Networking > Cisco: Routers Forum

T1 Line and CISCO Router

Read More Threads Like This One

Flybird74 (IS/IT--Management)

7 Jun 12 17:02

Hello, all, this is my first time to deal with T1 line directly. We have a CISCO 2921 router, two T1 lines. The vendor provided this information and I could not find any explanation to it.
Can someone please answer the questions?

WAN Link Details:
WAN Link IP Address:122.122.122.92
AR Serial INT IP Address:122.122.122.93
CR Serial INT IP Address:122.122.122.94
WAN Link Subnet Mask:255.255.255.252

What each of the above IP for? what is AR, CR? How do you map these three IP to your router interfaces? Thanks.

Carpua (ISP)

12 Jun 12 7:07

hi Flybird

122.122.122.92/30 your WAN link range 92 is the network and 95 the broadcast. which gives you two hosts 93 and 94.

CR is your side. which means your going to configure your serial port with the address 122.122.122.94/30 or 122.122.122.94 255.255.255.252.

AR is probably their side. The reason they gave you the IP address is for your routing purpose to use as the next hop. for example if you wanted to set the default route would be something like this ip route 0.0.0.0 0.0.0.0 122.122.122.93

Flybird74 (IS/IT--Management)

15 Jun 12 0:09

Great answers! Thank you!

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members!

Back To Forum

Back To Cisco: Routers