Specifications

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Cisco ATM Services (AXSM) Configuration Guide and Command Reference for MGX Switches
Release 5.2, Part Number OL-6484-01 Rev. C0, September 2005
Chapter 2 Preparing AXSM Lines for Communication
General AXSM Provisioning Procedures
Replace <archmode> with an option number that defines the type of line redundancy you want to use.
Table 2-6 shows the option numbers and the types of redundancy they select.
In the following example, 1+1 APS redundancy is assigned to lines on two different cards:
pop20one.1.AXSM.a > addapsln 1.1.2 2.1.2 1
Step 6 To display a list of all the APS lines on an AXSM card, enter the dspapslns command.
Step 7 To display information on a specific APS line, enter the dspapsln <slot.bay.line> command on the active
AXSM card.
For information on managing redundant APS lines, refer to Chapter 13, “Switch Operating Procedures,”
in the Cisco MGX 8800/8900 Series Configuration Guide, Release 5.2.
Channelizing SONET, SDH, and DS3 (T3) Lines into Paths
This section describes the basic channelization procedure for channelizing SONET, SDH, or DS3 paths
on AXSM-XG cards that support channelization. It includes the following sections:
• Overview of Channelization on an AXSM-XG Card
Overview of Channelization on an AXSM-XG Card
AXSM-XG cards support clear channel services and channelized lines. If a line is not channelized, it is
said to be a clear channel line, and the full bandwidth of that line is dedicated to a single channel or path.
When a line is channelized, it is logically divided into smaller bandwidth channels called paths. The
following table summarizes channelization capabilities by card:
A SONET synchronous transport signal (STS) is an electrical signal that gets combined with other
electrical signals before being transported over an optical line. An STS-3 path has the same bandwidth
as an OC-3 line, but it is not labeled with the OC rating if it is merely a path within a higher bandwidth
line. For example, you can configure up to 16 STS-3 width paths in an OC-48 line. A synchronous
transport module (STM) signal is the SDH equivalent of the SONET STS.
When a line is brought up initially, there is one path with. On a SONET line, a path width of 3 indicates
that the line contains one clear channel STS-3 path. On an SDH line, a path width of 3 indicates that the
line contains one clear channel STM-1/AU-4.
Table 2-7 Line Channelization
Line Type SONET Channelization
OC-192/STM-64 None supported
OC-48/STM-16 STS-12, STS-3, DS3
OC-12/STM-4 STS-3 and DS3
OC-3/STM-1 None supported