3. Troubleshooting

Introducing Router Troubleshooting Features . . . . . . . . . . . . .

3-2

Basic Troubleshooting Tips . . . . . . . . . . . . . . . . . . . . . . .

3-3

Interpreting LED Error Patterns . . . . . . . . . . . . . . . . . . . .

3-4

Interpreting ERROR Messages on the HP AdvanceStack

 

Router 200 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-6

General Procedure for Self-Test Failures . . . . . . . . . . . . . .

3-6

Recoverable Self-Test Failures . . . . . . . . . . . . . . . . . . . .

3-7

Non-Recoverable Self-Test Failures . . . . . . . . . . . . . . . . .

3-8

Verifying LED Operation . . . . . . . . . . . . . . . . . . . . . . . . .

3-9

Verifying LED Operation on the HP Router ER, TR, and SR . . .

3-9

Verifying LED Operation on Other Router Models . . . . . . . . .

3-9

Diagnostic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-10

Testing the Router Only . . . . . . . . . . . . . . . . . . . . . . . .

3-10

Testing the Router’s Ports . . . . . . . . . . . . . . . . . . . . . . .

3-11

Troubleshooting a Terminal or Modem Connection . . . . . . . .

3-12

Testing a Transceiver on an Ethernet/802.3 Port . . . . . . . . . .

3-15

Testing a Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-16

A. Cables and Connectors

HP Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A-3

Other Standard Cables . . . . . . . . . . . . . . . . . . . . . . . . .

A-4

Cable and Connector Pin-Outs . . . . . . . . . . . . . . . . . . . . .

A-5

Router Console Port Connector Pin-Outs . . . . . . . . . . . . .

A-5

RS-232 Modem Cable—Minimum Pin-Outs . . . . . . . . . . . . .

A-5

RS-232 “Null Modem” Cable for Terminal/PC with

 

25-Pin Connector—Minimum Pin-Out . . . . . . . . . . . . . .

A-6

RS-232 “Null Modem” Cable for Terminal/PC with

 

9-Pin Connector—Minimum Pin-Outs . . . . . . . . . . . . . . .

A-6

RS-232 Cable for HP Portable (110) and Portable

 

Plus—Minimum Pin-Outs . . . . . . . . . . . . . . . . . . . . .

A-7

Null-Modem Adapter for Use with Modem

 

Cable—Minimum Pin-Outs . . . . . . . . . . . . . . . . . . . . .

A-7

Router AUI LAN Port Definition . . . . . . . . . . . . . . . . . . .

A-8

AUI Cable—Minimum Pin-Outs . . . . . . . . . . . . . . . . . . .

A-8

RS-449/422 WAN Cable—Minimum Pin-Outs . . . . . . . . . . . .

A-9

V.35 WAN Cable—Minimum Pin-Outs . . . . . . . . . . . . . . . .

A-10

X.21 WAN Cable—Minimum Pin-Out . . . . . . . . . . . . . . . .

A-11

RS-232 WAN Cable—Minimum Pin-Outs . . . . . . . . . . . . . .

A-12

Back-to-Back Test Cables . . . . . . . . . . . . . . . . . . . . . . .

A-13

6