Cisco ISE - Line Card ISE Bedienungsanleitung PDF herunterladen (Seite 13)

Cisco IOSSoftware Configurationforthe Cisco12000Series One-PortChannelized OC-12/STM-4(DS1/E1)ISE Line

How to Configure Layer 1 Features

Cisco IOS Release 12.0(27)S1

Configuring T3 Links with SONET Framing

You can configure T3 links from the STS-1 path configuration level when ct3 is the STS-1 mode of

operation.

Summary Steps

1. t3 framing [auto-detect | c-bit | m23

2. t3 clock source [internal | line]

3. t3 equipment {customer | network } loopback

Detailed Steps

Command Purpose

Step 1

t3 framing [auto-detect | c-bit | m23]

Example:

Router(config-crtlr-sts1)# t3 framing m23

Specifies the framing type for the T3 link. Default

is auto-detect.

Note The M23 framing type might be referred

to as M13 in other technical literature and

on test equipment.

Auto-detect identifies the framing type the line

card is receiving from the far end and then

transmits with that same framing type.

Step 2

t3 clock source [internal | line]

Example:

Router(config-crtlr-sts1)# t3 clock source line

Sets the clock source for the selected T3 link. The

default is internal.

Note On a T3 circuit, at least one end must

provide the clock source (by using the

internal clock source). The other end of

the T3 circuit can use either line or

internal as the clock source.

Step 3

t3 equipment {customer | network } loopback

Example:

Router(config-ctrlr-sts1)# t3 equipment customer loopback

The default is t3 equipment customer loopback.

The equipment customer loopback command

enables the line card to respond to remote T3 link

loopback commands from the remote T3

equipment .

The equipment network loopback command

enables the line card to ignore remote T3 link

loopback commands,

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