Multichannel STM-1 Port Adapter for the
Cisco 7500 Series Router
This feature module describes the Multichannel STM-1 Port Adapter (PA-MC-STM-1). It includes
information on the benefits of this port adapter, supported platforms, related documents, configuration
examples and a command reference detailing new and enhanced commands.
This document includes the following sections:
• Feature Overview, page 1
• Supported Platforms, page 3
• Supported Standards, MIBs, and RFCs, page 3
• Prerequisites, page 4
• Configuration Tasks, page 4
• Monitoring and Maintaining the PA-MC-STM-1, page 22
• Configuration Examples, page 22
• Command Reference, page 24
• Glossary, page 47
Feature Overview
The PA-MC-STM-1 is a high-speed single-port multichannel STM-1 port adapter. You can configure the
PA-MC-STM-1 as a multichannel E1/E0 STM-1 port. The PA-MC-STM-1 can be configured into 63
individual E1 links. Each E1 link can carry a single channel at full or fractional rates, or be broken down
into multiple DS0 or Nx64 Kbps rates. The PA-MC-STM-1 supports up to three TUG-3/AU-3 transport
slots numbered 1 through 3. You can configure each TUG-3/AU-3 to carry 21 SDH TU-12s. Each SDH
TU-12 is capable of carrying a channelized E1 frame, which can be unchannelized to N*64 Kbps
timeslots.
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Feature Overview
PA-MC-STM-1 Multiplexing Hierarchy
Figure 1 illustrates the synchronous digital hierarchy (SDH) multiplexing structure supported on the
PA-MC-STM-1. The PA-MC-STM-1 multiplexing structure is a subset of that defined in ITU-T G.707.
At the lowest level, containers are input into virtual containers (VC) with stuffing bits to create a uniform
VC payload with a common bit-rate, ready for synchronous multiplexing. The VCs are then aligned into
tributary units (TUs) where pointer processing operations are implemented. This allows the TUs to be
multiplexed into TU groups (TUGs). Three TU-12s can be multiplexed into one TUG-2.
Figure 1PA-STM-1 Multiplexing Structure
Multichannel STM-1 Port Adapter for the Cisco 7500 Series Router
E1
2.048 Mbps
Benefits
C-12
VC-12
TU-12
TUG-3
x3
TUG-2
x7
x3
VC-4
VC-3AU-3
x7
x1
x1
AU-4
x1
x3
AUG
x1
STM-1
47902
The TUGs are then multiplexed into higher-level VCs, which in turn are multiplexed into administrative
units (AUs).The AUs are then multiplexed into an AU group (AUG), and the final payload from the AUG
is then multiplexed into the Synchronous Transport Module (STM).
The PA-MC-STM-1 port adapter provides the following benefits:
• High-density IP aggregation
• Reduction in provisioning costs
• Improved cable management
• Easier scaling of services
• Improved network availability
Restrictions
The PA-MC-STM-1 does not support the following:
• VIP2
• More than 256 logical channel groups per PA-MC-STM-1
• Channel-associated-signaling (CAS) for voice channels
• E1 Facility Data Link (FDL)
• E3 and subrate E3
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Multichannel STM-1 Port Adapter for the Cisco 7500 Series Router
Related Features and Technologies
• PA- MC -T 3
• PA- MC -E 3
Related Documents
PA-MC-STM-1 Port Adapter Installation and Configuration
Supported Platforms
• Cisco 7500 series
Supported Standards, MIBs, and RFCs
Supported Platforms
Standards
• CCITT/ITU G.704
• CCITT/ITU G.706
• CSA C22.2, No. 950
• ITU-T O.151
• ITU-T O.152
• ITU-T O.153
• FCC Part 15, class A
• FCC Part 68
• G.704
• G.706
• G.707
• UL1950 3rd Edition
MIBs
No new or modified MIBs are supported by this feature.
To obtain lists of MIBs supported by platform and Cisco IOS release and to download MIB modules, go
to the Cisco MIB web site on Cisco Connection Online (CCO) at
http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml.
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Prerequisites
RFCs
• RFC 1406, Definitions of Managed Objects for the DS1 and E1 Interface Types
• RFC 1595, Definitions of Managed Objects for the SONET/SDH Interface Type
NoteBecause E1 FDL is not supported by the PA-MC-STM-1, the far-end statistics and control
groups defined by RFC 1406 are not available.
Prerequisites
The PA-MC-STM-1 requires a VIP4-80 installed in a Cisco 7500 series router.
Configuration Tasks
See the following sections for configuration tasks for the PA-MC-STM-1. Each task in the list indicates
if the task is optional or required.
• Configuring the SONET Controller (Required)
• Configuring an AU-3 (Required)
Multichannel STM-1 Port Adapter for the Cisco 7500 Series Router
• Configuring a TUG-3 (Required)
• Configuring a Channel Group on an E1 of an AU-3 (Required)
• Configuring a Channel Group on an E1 of a TUG-3 (Required)
• Configuring an E1 Line Mapped to an AU-3 (Required)
• Configuring an E1 Line Mapped to a TUG-3 (Required)
Configures the clock source used by the SONET
controller.
• internal—The clocking source is obtained
from the port adapter line.
• line—The clocking source is obtained from
the network.
Enables or disables loopback mode on a SONET
controller.
• local—Data is looped from the transmit path
to the receive path allowing diagnostics to
send data to itself without relying on any
external connections.
• network—Data is looped from the external
port to the transmit port and back out the
external port.
No loopback enabled is the default.
Specifies up to 80 characters of text describing the
SONET controller. No description is the default.
Configuring an AU-3
Each of the administrative unit group (AUGs) and tributary unit group (TUGs) of a PA-MC-STM-1 can
be configured to carry a set of E1 links that are mapped into TU-12s. To configure the AUG mapping to
AU-3, follow the steps below:
CommandPurpose
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Router(config)# controller sonet
slot/port-adapter/port
Router(config-controller)# framing sdh
Router(config-controller)# [no] aug mapping au-3
Router(config-controller)# au-3 au-3-number
Router(config-ctrlr-au3)# mode c-12
Router(config-ctrlr-au3)# idle pattern pattern
Enters SONET controller configuration mode.
Configures the framing mode of the to SDH.
Maps the AUG to AU-3 with the following
muxing/alignment/mapping:
Configures the idle pattern that is to be transmitted
for unused time slots on all E1 lines of a AU-3.
• pattern—number in the range 0x0 to 0xFF
(hexadecimal) or 0 to 225 (decimal).
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Configuration Tasks
Configuring a TUG-3
Each of the administrative unit group (AUGs) and tributary unit group (TUGs) of a PA-MC-STM-1 can
be configured to carry a set of E1 links that are mapped into TU-12s. To configure the AUG mapping to
AU-4, follow the steps below:
CommandPurpose
Step 1
Step 2
Step 3
Step 4
Router(config)# controller sonet
slot/port-adapter/port
Router(config-controller)# framing sdh
Router(config-controller)# [no] aug mapping au-4
Router(config-controller)# au-4 au-4-number tug-3
tug-3-number
Multichannel STM-1 Port Adapter for the Cisco 7500 Series Router
Enters SONET controller configuration mode.
Configures the framing mode of the to SDH.
Maps the AUG to AU-4 with the following
muxing/alignment/mapping:
the router via the internal E1 framer and loops
E1 output to the network via the internal E1
framer.
• network—Loops E1 input back to the
network.
Shuts down an E1 line.
• tug-2-number—a number in the range of
1to7
• e1-number—a number in the range of 1 to 3
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Configuration Tasks
Verifying the Configuration
You can verify the configuration and status of the controller by using the show controller commands as
detailed below.
When AUG mapping is AU-4, view information about the SONET controller using the
sonet controller sonet port/port-adapter/port [brief | tabular] command.
Router# show controller sonet 2/0/0
SONET 2/0/0 is up.
Channelized OC-3/STM-1 SMI PA
H/W Version :0.2.3, ROM Version :1.2
FREEDM version :2, F/W Version :1.2.0
Applique type is Channelized Sonet/SDH
Clock Source is Internal, AUG mapping is AU4.
Medium info:
Type:SDH, Line Coding:NRZ, Line Type:Short SM
Regenerator Section Status:
No alarms detected.
Multiplex Section Status:
No alarms detected.
Multichannel STM-1 Port Adapter for the Cisco 7500 Series Router
Higher Order Path Status:
Path# 1 has no defects
Lower Order Path Status:
VC-12 1/1/1/1 has no defects
VC-12 1/1/1/2 has no defects
VC-12 1/1/1/3 has no defects
VC-12 1/1/2/1 has no defects
VC-12 1/1/2/2 has no defects
VC-12 1/1/2/3 has no defects
SONET 2/0/0 E1 1/1/1/1 is up
No alarms detected.
Framing is crc4, Clock Source is internal, National bits are 0x1F.
Data in current interval (137 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs
0 Unavail Secs
SONET 2/0/0 E1 1/1/1/2 is up
No alarms detected.
Framing is crc4, Clock Source is internal, National bits are 0x1F.
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Multichannel STM-1 Port Adapter for the Cisco 7500 Series Router
Data in current interval (137 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs
0 Unavail Secs
[display text omitted]
Router# show controller sonet 2/0/0 brief
SONET 2/0/0 is up.
Channelized OC-3/STM-1 SMI PA
H/W Version :0.2.3, ROM Version :1.2
FREEDM version :2, F/W Version :1.2.0
Applique type is Channelized Sonet/SDH
Clock Source is Internal, AUG mapping is AU4.
Medium info:
Type:SDH, Line Coding:NRZ, Line Type:Short SM
Regenerator Section Status:
No alarms detected.
Multiplex Section Status:
No alarms detected.
Configuration Tasks
Higher Order Path Status:
Path# 1 has no defects
Lower Order Path Status:
VC-12 1/1/1/1 has no defects
VC-12 1/1/1/2 has no defects
VC-12 1/1/1/3 has no defects
VC-12 1/1/2/1 has no defects
VC-12 1/1/2/2 has no defects
VC-12 1/1/2/3 has no defects
[display text omitted]
SONET 2/0/0 E1 1/1/1/1 is up
No alarms detected.
Framing is crc4, Clock Source is internal, National bits are 0x1F.
SONET 2/0/0 E1 1/1/1/2 is up
No alarms detected.
Framing is crc4, Clock Source is internal, National bits are 0x1F.
SONET 2/0/0 E1 1/1/1/3 is up
No alarms detected.
Framing is crc4, Clock Source is internal, National bits are 0x1F.
[display text omitted]
Router# show controller sonet 2/0/0 tabular
SONET 2/0/0 is up.
Channelized OC-3/STM-1 SMI PA
H/W Version :0.2.3, ROM Version :1.2
FREEDM version :2, F/W Version :1.2.0
Applique type is Channelized Sonet/SDH
Clock Source is Internal, AUG mapping is AU4.
Medium info:
Type:SDH, Line Coding:NRZ, Line Type:Short SM
Regenerator Section Status:
No alarms detected.
Multiplex Section Status:
No alarms detected.
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