Chapter 8 Troubleshooting

Problem Solving Using a Subsystems Approach

Telnet connection

CLI commands:

terminates

show line

automatically

 

show line vty

 

timeout

Telnet connection may be timing out.

Reconfigure line timeout.

timeout <time in seconds>

Troubleshooting the Link Interface Subsystem

Check the following to help isolate a problem in the link interface subsystem.

In general, the case where no traffic is coming out of the SCE 1000 is often caused by link problems or GBE interface configuration. Note that in some cases, the problem which seems as a transmit problem could be in the Rx (no traffic is being received by the SCE 1000 or there is actually no traffic on the line, which could be a normal situation).

Note In CLI commands of GigabitEthernet interfaces, # stands for the number of the interface. This can be 1 or 2.

Problems in the link interface subsystem could be any of the following:

Link is down. (LINK LED not lit and system status is WARNING)

Peer does not receive traffic from SCE 1000 (GBE link is lit and Tx LED is flashing)

GBE link is up but not receiving from peer (GBE link is lit, but Rx LED is not flashing)

 

Table 8-7

Troubleshooting the Link Interface Subsystem

 

 

 

 

Symptom

Diagnostic Action

Possible Cause

Possible Solution

 

 

 

 

 

• Link is down.

CLI command:

 

Connector is not connected to

Reconnect the cable to the GBE

(LINK LED not

• show interface

 

the platform or to the network

port and to network.

lit)

 

 

 

GigabitEthernet

 

 

• Status is

0/# counters

 

 

 

WARNING

 

 

 

 

(Status LED is

 

 

 

 

flashing orange)

 

 

 

 

• Output counters

 

 

 

 

not incrementing.

 

 

 

 

 

 

 

 

 

 

 

 

GBE cable is broken

Reconnect / replace the cable to

 

 

 

 

the GBE port.

 

 

 

 

 

 

 

 

 

If GBE counters are

 

 

 

 

incrementing, this indicates

 

 

 

 

LED problem. Contact

 

 

 

 

customer support.

 

 

 

 

 

Cisco SCE 1000 2xGBE Installation and Configuration Guide

8-14

OL-7821-04

 

 

 

 

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Cisco Systems OL-7821-04, SCE 1000 2xGBE manual Troubleshooting the Link Interface Subsystem, GigabitEthernet

SCE 1000 2xGBE, OL-7821-04 specifications

Cisco Systems OL-7821-04, SCE 1000 2xGBE is an advanced network service appliance designed to deliver superior performance and reliability for service providers seeking to optimize their networks. This compact yet powerful device is integral in addressing the growing demands of data traffic in telecommunications and data centers.

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With its robust architecture, the device also offers scalability, accommodating the growing network requirements of service providers. As businesses grow and data use expands, the SCE 1000 can adapt without compromising performance.

In summary, the Cisco Systems OL-7821-04, SCE 1000 2xGBE is a versatile network service appliance that combines high performance, advanced service creation technology, and strong security features. It stands out as an essential tool for service providers aiming to enhance their network capabilities and deliver superior services to customers. Its dual GbE ports, IPv4/IPv6 support, and dynamic traffic management make it a reliable choice for organizations anticipating significant data growth.