Cisco STM-1 Manuale utente

12.0(14)S

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.

Multichannel STM-1 Port Adapter for the Cisco 7500 Series Router

Feature Overview

12.0(14)S

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 1 PA-STM-1 Multiplexing Structure

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).

Benefits

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

TU-12

TUG-2

TUG-3

2.048 Mbps C-12

VC-12

VC-4

VC-3 AU-3

AUG

AU-4

x3 x7

STM-1

47902

Multichannel STM-1 Port Adapter for the Cisco 7500 Series Router

Supported Platforms

12.0(14)S

Related Features and Technologies

•PA-MC-T3

•PA-MC-E3

Related Documents

PA-MC-STM-1 Port Adapter Installation and Configuration

Supported Platforms

•Cisco 7500 series

Supported Standards, MIBs, and RFCs

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.

Multichannel STM-1 Port Adapter for the Cisco 7500 Series Router

Prerequisites

12.0(14)S

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

Note Because 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)

•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)

•Verifying the Configuration

Configuring the SONET Controller

Command Purpose

Step 1 Router# configure terminal Enters configuration mode and specifies that the

console terminal is the source of the configuration

subcommands.

Step 2 Router(config)# controller sonet

slot/port-adapter/port

Selects a port of a PA-MC-STM-1 and enters

controller configuration mode.

Step 3 Router(config-controller)# [no] framing {sonet | sdh}Configures the framing mode of the

PA-MC-STM-1 to SONET or SDH.

SDH is the ITU standards equivalent of SONET.

SONET is the default.

Multichannel STM-1 Port Adapter for the Cisco 7500 Series Router

Configuration Tasks

12.0(14)S

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:

Step 4 Router(config-controller)# clock source

{internal |line}

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.

Step 5 Router(config-controller)# [no] loopback {local |

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.

Step 6 Router(config-controller)# [no] description string Specifies up to 80 characters of text describing the

SONET controller. No description is the default.

Command Purpose

Step 1 Router(config)# controller sonet

slot/port-adapter/port

Enters SONET controller configuration mode.

Step 2 Router(config-controller)# framing sdh Configures the framing mode of the to SDH.

Step 3 Router(config-controller)# [no] aug mapping au-3 Maps the AUG to AU-3 with the following

muxing/alignment/mapping:

C-12 <-->VC-12 <--> TU-12<--> TUG-2

<--> VC-3 <--> AU-3 <--> AUG

Step 4 Router(config-controller)# au-3 au-3-number Specifies the AU-3 number to configure:.

•au-3-number—a number in the range of

1to3.

Step 5 Router(config-ctrlr-au3)# mode c-12 Specifies the mode of operation of the AU-3.

•c-12—The AU-3 is divided into 21 TU-12s

each carrying an E1.

Step 6 Router(config-ctrlr-au3)# idle pattern pattern 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).

Multichannel STM-1 Port Adapter for the Cisco 7500 Series Router

Configuration Tasks

12.0(14)S

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:

Configuring a Channel Group on an E1 of an AU-3

Command Purpose

Step 1 Router(config)# controller sonet

slot/port-adapter/port

Enters SONET controller configuration mode.

Step 2 Router(config-controller)# framing sdh Configures the framing mode of the to SDH.

Step 3 Router(config-controller)# [no]aug mapping au-4 Maps the AUG to AU-4 with the following

muxing/alignment/mapping:

C-12 <-->VC-12 <--> TU-12<--> TUG-2

<--> TUG-3 <--> VC-4 <--> AU-4 <--> AUG

Step 4 Router(config-controller)# au-4 au-4-number tug-3

tug-3-number

Specifies the TUG-3 number to configure:

•au-4-number—a number in the range of 1 to N

where N is the STM level (For the

PA-MC-STM-1 N is always 1.)

•tug-3-number—a number in the range of

1to3.

Step 5 Router(config-ctrlr-tug3)# mode c-12 Specifies the mode of operation of a TUG-3:

•c-12—The TUG-3 is divided into 21 TU-12s

each carrying an E1.

Step 6 Router(config-ctrlr-tug3)# idle pattern pattern Configures the idle pattern that is to be transmitted

for unused time slots on all E1 lines of an AU-4.

•pattern—number in the range 0x0 to 0xFF

(hexadecimal) or 0 to 225 (decimal)

Command Purpose

Step 1 Router(config)# controller sonet

slot/port-adapter/port

Enters SONET controller configuration mode.

Step 2 Router(config-controller)# framing sdh Configures the framing mode of the to SDH.

Step 3 Router(config-controller)# [no] aug mapping au-3 Maps the AUG to an AU-3 with the following

muxing/alignment/mapping:

C-12 <-->VC-12 <--> TU-12<--> TUG-2

<--> VC-3 <--> AU-3 <--> AUG

Step 4 Router(config-controller)# au-3 au-3-number Specifies the AU-3 number to configure:.

•au-3-number—a number in the range of

1to3.

Multichannel STM-1 Port Adapter for the Cisco 7500 Series Router

Configuration Tasks

12.0(14)S

Step 5 Router(config-ctrlr-au3)# mode c-12 Specifies the mode of operation of the AU-3.

•c-12—The AU-3 is divided into 21 TU-12s

each carrying an E1.

Step 6 Router(config-ctrlr-tug3)# [no] tug-2 tug-2-number e1

e1-number channel-group channel-group-number timeslots

list-of-timeslots

Router(config-ctrlr-tug3)# [no]tug-2 tug-2-number e1

e1-number unframed

Creates a logical channel group on an E1 line.

•tug-2-number—a number in the range of1 to 7

•e1-number—a number in the range of 1 to 3

•channel-group—defines a logical channel

group to be a channelized E1 line

•channel-group-number—a number in the

range of 0 to 30

•list-of-timeslots—a number in the range of

1 to 31 or a combination of subranges within

1 to 31 (Each subrange is a list of timeslots

that makes up the E1 line.)

Use the no form of this command to remove a

logical channel group.

The default is no channel group configured on an

E1 line.

Creates an unframed (clear channel) logical

channel group on an E1 line.

•tug-2-number—a number in the range of

1to7

•e1-number—a number in the range of 1 to 3

Step 7 Router(config-ctrlr-au3)# exit

Router(config-controller)# exit

Returns to configuration mode.

Step 8 Router(config)# interface serial

slot/port-adapter/port.au-3-number/tug-2-number/

e1-number:chanel-group-number

Selects the channel group interface to configure.

Note When an unframed (clear

channel logical channel

group is configured on an E1

line, the

channel-group-number is

always 0.

Step 9 Router(config-if)# ip address 1.1.1.10 255.255.255.255 Enables IP on the channel group interface.

Step 10 Router(config-if)# encapsulation ppp Enables PPP on the channel group interface.

Command Purpose

Multichannel STM-1 Port Adapter for the Cisco 7500 Series Router

Configuration Tasks

12.0(14)S

Configuring a Channel Group on an E1 of a TUG-3

Command Purpose

Step 1 Router(config)# controller sonet

slot/port-adapter/port

Enters SONET controller configuration mode.

Step 2 Router(config-controller)# framing sdh Configures the framing mode of the to SDH.

Step 3 Router(config-controller)# [no] aug mapping au-4 Maps the AUG to AU-4 with the following

muxing/alignment/mapping:

C-12 <-->VC-12 <--> TU-12<--> TUG-2

<--> TUG-3 <--> VC-4 <--> AU-4 <--> AUG

Step 4 Router(config-controller)# au-4 au-4-number tug-3

tug-3-number

Specifies the AU-4 and TUG-3 number to

configure:

•au-4-number—a number in the range of

1 to N where N is the STM level (For the

PA-MC-STM-1 N is always 1.)

•tug-3-number—a number in the range of

1to3.

Step 5 Router(config-ctrlr-tug3)# mode c-12 Specifies the mode of operation of an AU-4.

•c-12—The TUG-3 is divided into 21 TU-12s

each carrying an E1.

Step 6 Router(config-ctrlr-tug3)# [no] tug-2 tug-2-number e1

e1-number channel-group channel-group-number timeslots

list-of-timeslots

Router(config-ctrlr-tug3)# [no]tug-2 tug-2-number e1

e1-number unframed

Creates a logical channel group on an E1 line.

•tug-2-number—a number in the range of1 to 7

•e1-number—a number in the range of 1 to 3

•channel-group—defines a logical channel

group to be a channelized E1 line

•channel-group-number—a number in the

range of 0 to 30

•list-of-timeslots—a number in the range of

1 to 31 or a combination of subranges within

1 to 31 (Each subrange is a list of timeslots

that makes up the E1 line.)

Use the no form of this command to remove a

logical channel group.

The default is no channel group configured on an

E1 line.

Creates an unframed (clear channel) logical

channel group on an E1 line.

•tug-2-number—a number in the range of

1to7

•e1-number—a number in the range of 1 to 3

Step 7 Router(config-ctrlr-tug3)# exit

Router(config-controller)# exit

Returns to configuration mode.

Multichannel STM-1 Port Adapter for the Cisco 7500 Series Router

Configuration Tasks

12.0(14)S

Configuring an E1 Line Mapped to an AU-3

Step 8 Router(config)# interface serial

slot/port-adapter/port.au-4-number/tug-3-number/tug-2-

number/ e1-number:channel-group-number

Selects the channel group interface to configure.

Note When an unframed (clear

channel logical channel

group is configured on an E1

line, the

channel-group-number is

always 0.

Step 9 Router(config-if)# ip address 1.1.1.10 255.255.255.255 Enables IP on the channel group interface.

Step 10 Router(config-if)# encapsulation ppp Enables PPP on the channel group interface.

Step 1 Router(config)# controller sonet

slot/port-adapter/port

Enters SONET controller configuration mode.

Step 2 Router(config-controller)# [no] aug mapping au-3 Maps the AUG to an AU-3 with the following

muxing/alignment/mapping:

C-12 <-->VC-12 <--> TU-12<--> TUG-2

<--> VC-3 <--> AU-3 <--> AUG

Step 3 Router(config-controller)# au-3 au-3-number Specifies the au-3 number to configure:.

•au-3-number—a number in the range of

1to3.

Step 4 Router(config-ctrlr-au3)# mode c-12 Specifies the mode of operation of the AU-3.

•c-12—The AU-3 is divided into 21 TU-12s

each carrying an E1.

Step 5 Router(config-ctrlr-au3)# tug-2 tug-2-number e1

e1-number framing {crc4 | no crc4}

Specifies the type of framing used an by an E1

line.

•tug-2-number—a number in the range of

1to7

•e1-number—a number in the range of 1 to 3

•crc4— 4-bit cyclic redundancy check

•no crc4—basic framing

The default is CRC4.

Command Purpose

Multichannel STM-1 Port Adapter for the Cisco 7500 Series Router

Configuration Tasks

12.0(14)S

Step 6 Router(config-ctrlr-au3)# tug-2 tug-2-number e1

e1-number clock source {internal | line}

Specifies the clock source to be used by the E1

line.

•tug-2-number—a number in the range of

1to7

•e1-number—a number in the range of 1 to 3

•internal—Specifies the PA-MC-STM-1 as

the clock source

•line—Specifies the E1 line as the clock source

Step 7 Router(config-ctrlr-au3)# tug-2 tug-2-number e1

e1-number national bits pattern

Configures the national reserved bits for the E1

line.

•tug-2-number—a number in the range of

1to7

•e1-number—a number in the range of 1 to 3

•pattern—The national reserved bit pattern is a

hexadecimal value in the range 0x0–0x1F

(hexadecimal) or 0-31 (decimal).

The default setting is 0x1F.

Step 8 Router(config-ctrlr-au3)# [no] tug-2 tug-2-number e1

e1-number bert pattern pattern interval time

Sends a BERT pattern on an E1 line.

•tug-2-number—a number in the range of

1to7

•e1-number—a number in the range of 1 to 3

•pattern:

–

2^11, pseudorandom test pattern (2048

bits long)

–

2^15, pseudorandom O.151 test pattern

(32,768 bits long)

–

2^20-O153, 2^20-1 O.153 test pattern

–

2^20-QRSS, pseudorandom QRSS O.151

test pattern (1048575 bits long)

•time—an interval in the range of 1 to14400

minutes

The default is no BER test configured.

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