Cisco ASR 1000 Configuration Guide

19-17
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
OL-14127-08
Chapter 19 Configuring the 1-Port Channelized OC-3/STM-1 SPA and 1-Port Channelized OC-12/STM-4 SPA
Configuration Tasks
Configuring FDL
Facility Data Link (FDL) is a 4-kbps channel provided by the Extended Super Frame (ESF) T1 framing
format. The FDL performs outside the payload capacity and allows you to check error statistics on
terminating equipment without intrusion. To configure FDL, use the following commands:
Verifying FDL
Use the show controllers t1 command to verify the fdl setting:
Router# show controllers t1
Command Purpose
Step 1
Router# configure terminal Enters global configuration mode.
Step 2
Router(config)# controller sonet
slot/subslot/port
Selects the controller to configure and enters controller
configuration mode.
• slot/subslot/port—Specifies the location of the controller.
For addressing information, refer to the “Specifying the Physical
Address for Controller and Interface Configuration” section on
page 19-2.
Step 3
Router(config)# sts-1 sts-# Specifies the SONET Synchronous Transport Signal (STS) level
and enters STS1 configuration mode, where:
sts-1#—STS values are 1 to 3.
Step 4
Router(config-ctrlr-sts1)# mode
{ct3 | ct3-e1 |

t3 | vt-15}
Specifies the mode of operation of an STS-1 path, where:
• ct3—A STS-1 carrying a DS3 signal is divided into 28 T1s
(Plesiochronous Digital Hierarchy [PDH]).
• ct3-e1—The channelized T3 is carrying E1 circuits.
• t3—STS-1 carries an unchannelized (clear channel) T3.
• vt-15—A STS-1 is divided into seven Virtual Tributary
Groups (VTG). Each VTG is then divided into four VT1.5’s,
each carrying a T1.
Step 5
If vt-15 mode was selected:
Router(config-ctrlr-sts1)# vtg
vtg#
Configures the T1 on the VTG, where:
• vtg#—Specifies the VTG number. Values are 1 to 7.
Step 6
Router(config-ctrlr-sts1)# t1 t1#
framing {sf | esf}
Specifies the type of framing, where:
• t1#—Number indicating the T1 channel.
• sf— Specifies that Super Frame (SF) is used as the T1 framing
type.
• esf—Specifies that Extended Super Frame (ESF) is used as the
T1 framing type. Select esf to configure FDL.
Step 7
Router(config-ctrlr-sts1)# t1 t1#
fdl ansi
Configures the format used for Facility Data Link (FDL) if the
framing format was configured for esf, where:
• t1#—Number indicating the T1 channel.
• fdl ansi—Selects ANSI for FDL to use the ANSI T1.403
standard.

Cisco ASR 1000 Specifications

General

Brand	Cisco
Model	ASR 1000
Category	Network Router
Language	English