Cisco ISE - Line Card ISE Manual do Utilizador descarregar pdf (Página 35)

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

If the connection fails, verify that you have the correct IP address for the destination and that the device

is active (powered on), then repeat the ping command.

Proceed to the next section, “Using E1 Interface Loopback Modes,” to finish checking network

connectivity.

Using E1 Interface Loopback Modes

If you have difficulty with the 1-Port CHOC-12 ISE line card configuration or installation, you can

troubleshoot the problem using the supported E1 interface loopback modes:

• Diagnostic, or local loopback, mode

• Network loopback mode:

–

Line loopback

–

Payload loopback

To set one of these loopback modes, use the tug-2 tug-2-number e1 e1-line-number loopback {local |

network {line | payload}} TUG-3 configuration command, where:

• tug-2-number is a number in the range from 1 to 7.

• e1-line-number is a number in the range from 1 to 3.

To disable one of these loopback modes, use the no tug-2 tug-2-number e1 e1-line-number loopback

{local | network {line | payload}} TUG-3 configuration command.

Table 9 describes the supported E1 interface loopback modes.

Table 9 1-port ChOC-12/STM-4 to DS1/E1 ISE Line Card E1 Loopback Modes

local Loops the router output data back toward the router at the E1 framer.

network {line | payload} Selecting network line loops the data back toward the network before

the E1 framer.

Selecting network payload sets a loopback that works much like the

network line loopback, except that the E1 framing bits are stripped at

the receive side of the E1 framer and regenerated at the transmit side of

the E1 framer (toward the network).

If the E1 channel is configured for internal clocking and you attempt to

set a network payload loopback, you will receive the following

warning message:

This channel is configured for Internal clocking. Data

integrity in network payload loopback is guaranteed only if

the opposite end is configured for Line clocking, or vice

versa.

Either the local port should be internal, and the remote port line,orthe

local port should be line, and the remote port internal.

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