Interoperability Guidelines For 6E3 Line Card Dsus; Maintenance Data Link Messages; Leds - Cisco 7304 Installation And Configuration Manual

Chapter 1 Overview

Interoperability Guidelines for 6E3 Line Card DSUs

The 6E3 line card supports several types of integrated data service units (DSUs).
feature compatibilities of 6E3 line card DSUs.
Table 1-1
DSU
DL3100
Kentrox
1. MDL (maintenance data link)
2. See the
3. The 6E3 line card supports scrambling and Kentrox subrate at the same time.

Maintenance Data Link Messages

E3 maintenance data link (MDL) messages are used to communicate identification information between
local and remote ports. The type of information included in MDL messages includes the equipment
identification code (EIC), location identification code (LIC), frame identification code (FIC), unit, Path
Facility Identification (PFI), port number, and Generator Identification numbers. The values for each
piece of MDL message identification can be defined only by a network administrator and are discussed
in ANSI T1.107.
For information on transporting MDL messages between source and destination E3 ports on a
Cisco 7304 router, refer to T3 Maintenance Data Link Messages on the Cisco 7304 Router at the
following URL:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121limit/121ex/121ex13/
e_t3mdl.htm

LEDs

The 6-port 6E3 line card has six LNK LEDs, one for each port, as well as one OIR LED and one STATUS
LED. (See
After system initialization, the STATUS LED goes on to indicate that power is received and that the
6E3 line card is enabled for operation.
The following conditions must all be met before the 6E3 line card is enabled:
•
•
•
If any one of these conditions is not met, or if the initialization fails, the STATUS LED does not go on.
Table 1-2 on page 1-4
OL-5061-01
Feature Compatibilities of 6E3 Line Card DSUs
Full Rate
Support
2
Yes
Yes
"DSU Link Doesn't Work" section on page 4-20
see the release notes for Cisco IOS Release 12.2(20)S
Figure 1-2.)
The 6E3 line card is correctly connected and receiving power.
The Network Services Engine 100 (NSE-100) recognizes the 6E3 line card.
The Cisco IOS image on the NSE-100 is running.
lists 6E3 line card LED colors and indications.
Scrambling Subrate
Support Support
Yes Yes
3 2
Yes Yes
for information about no ping response. Also
Cisco 7304 6-Port Clear Channel E3 Line Card Installation and Configuration
Interoperability Guidelines for 6E3 Line Card DSUs
Table 1-1
1
MDL Support
No
No
lists the
1-3