May 2011
Intermediate to advanced
788 pages
23h 34m
English
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Configuring T1s
There are two steps involved in configuring T1s for use on a router. The first step is the configuration of the CSU/DSUs. The second step is the configuration of the router interface. When you’re using integrated CSU/DSUs, the lines might seem blurred, but the concepts remain the same. Configuring the router interface is just like configuring any serial interface.
CSU/DSU Configuration
To get a T1 up and operational, you must do the following:
- Configure both sides with the same encoding that matches the circuit’s provisioned encoding
Encoding options are AMI and B8ZS. Data T1s should always use B8ZS encoding. To configure encoding on a CSU/DSU WIC, use the
service-module t1 linecodeinterface command:Router(config)#
int s0/1Router(config-if)#service-module t1 linecode b8zs- Configure both sides with the same framing that matches the circuit’s provisioned framing
Framing options are D4/SF and ESF. Data T1s should always use ESF framing. To configure framing on a CSU/DSU WIC, use the
service-module t1 framinginterface command:Router(config)#
int s0/1Router(config-if)#service-module t1 framing esf- Configure how many channels will be used for the link, which channels will be used, and what speed they will be
If the T1 is being split or you have had fewer than 24 channels delivered to you, you must tell the CSU/DSU how many channels are in use. You do this for the CSU/DSU WIC with the
service-module t1 timeslotsinterface command. Here, I’ve specified that channels 7–12 will ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.