Avaya Troubleshooting Routers Anleitung zur Fehlerbehebung Seite 119
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Troubleshooting a Network Layer Problem
117379-A Rev. A 6-11
5. Enter the Technician Interface loadmap
<slot_no.>
command for each
slot and verify that IP and ARP are running on all slots.
6. Verify that the ARP cache only has entries for hosts on the local network.
Refer to the MIB object wfIpNetToMediaEntry to locate the ARP cache.
Router Cannot Ping Endstation, Can Ping Other Endstations on the
Same Segment
If the router can ping other endstations successfully, but not the endstation in
question, and that endstation cannot ping other nodes in the network, do the
following:
1. Verify that the configuration of the endstation is correct.
2. Verify that the router’s ARP cache contains the endstation’s MAC
address.
Refer to the MIB object wfIpNetToMediaEntry to locate the ARP cache.
If the MAC address is incorrect, go to the endstation and try to ping the router.
The router should update its ARP cache with the correct MAC address. The
router’s ARP cache entries do not time out unless you enable the HOST/ARP
cache.
3. Look for an entry with alternating MAC addresses.
If an entry is alternating between one MAC address and another, two devices
on the network have the same IP address. Change the IP address of one of the
devices.
Endstation Cannot Ping the Remote Interface on the Router
Refer to one of the following sections:
• “Netw
ork Unreachable Message”
• “Host Did Not Respond Messa
ge”
- Troubleshooting Routers 1
- Contents 5
- 117379-A Rev. A 10
- About This Guide 15
- Before You Begin 16
- Conventions 17
- Acronyms 18
- Bay Networks Customer Service 23
- How to Get Help 23
- Chapter 1 25
- Introduction 25
- Caution: 26
- Backing Up Your Files 27
- Preparing to Troubleshoot 28
- Filtering Event Messages 30
- 1-8 117379-A Rev. A 32
- 1-10 117379-A Rev. A 34
- 1-12 117379-A Rev. A 36
- • get 1.3.10.Pleasant.Easton 36
- <object> 37
- <attribute> 41
- Unknown Network or Network 44
- Unreachable 44
- <volume> 46
- Documenting Each Step 47
- 1-24 117379-A Rev. A 48
- Chapter 2 49
- 117379-A Rev. A 2-3 51
- Chapter 3 53
- Damaged Router 54
- Power Problem 54
- Blown Fuse 54
- LEDs Are Off 55
- Router Won’t Boot 55
- TRB0001A 57
- Checking the Boot PROMs 58
- Example 59
- Lost Password (BN Routers) 62
- No Space Left on Memory Card 63
- Memory or Buffer Problem 64
- 3-16 117379-A Rev. A 68
- TRB0002A 69
- TRB0005A 71
- Fault Message 72
- Chapter 4 73
- 4-2 117379-A Rev. A 74
- 117379-A Rev. A 4-3 75
- 117379-A Rev. A 4-5 77
- Chapter 5 79
- Interface Problems 80
- 5-4 117379-A Rev. A 82
- Troubleshooting ATM LANE 85
- 5-8 117379-A Rev. A 86
- 5-10 117379-A Rev. A 88
- 117379-A Rev. A 5-11 89
- 117379-A Rev. A 5-13 91
- 117379-A Rev. A 5-19 97
- <slot_no.> 100
- <slot> 101
- 117379-A Rev. A 5-25 103
- <connector_no.> 104
- <setting> 104
- <instance> 106
- <ENTITY> 107
- 5-30 117379-A Rev. A 108
- Chapter 6 109
- Troubleshooting AppleTalk 110
- 117379-A Rev. A 6-3 111
- Troubleshooting DLSw 112
- 117379-A Rev. A 6-5 113
- Troubleshooting IP 114
- <TELNET 116
- Ping Does Not Work 117
- <slot_no.> 119
- Network Unreachable Message 120
- Host Did Not Respond Message 120
- TRB0006A 121
- Troubleshooting RIP 122
- Troubleshooting OSPF 123
- Troubleshooting IPX 124
- 6-18 117379-A Rev. A 126
- <destination_address> 127
- <service_name> 128
- Troubleshooting OSI 129
- 117379-A Rev. A 6-25 133
- 6-26 117379-A Rev. A 134
- 117379-A Rev. A 6-29 137
- 117379-A Rev. A 6-31 139
- Chapter 7 141
- 117379-A Rev. A 7-3 143
- <community index> 146
- <IP address> 146
- (continued) 146
- 117379-A Rev. A 7-7 147
- <pathname> 149
- Chapter 8 151
- Getting Help 151
- Sending and Retrieving Files 153
- <filename> 154
- Appendix A 155
- Reading the Event Log 155
- System Startup 156
- A-4 117379-A Rev. A 158
- A-6 117379-A Rev. A 160
- A-8 117379-A Rev. A 162
- A-10 117379-A Rev. A 164
- A-12 117379-A Rev. A 166
- A-14 117379-A Rev. A 168
- A-16 117379-A Rev. A 170
- Dial-on-Demand Raise DTR Log 171
- A-18 117379-A Rev. A 172
- A-20 117379-A Rev. A 174
- Dial-on-Demand V.25bis 176
- A-24 117379-A Rev. A 178
- A-26 117379-A Rev. A 180
- A-28 117379-A Rev. A 182
- A-30 117379-A Rev. A 184
- A-32 117379-A Rev. A 186
- A-34 117379-A Rev. A 188
- A-36 117379-A Rev. A 190
- Appendix B 193
- Run Packet Capture 193
- Overview 194
- 117379-A Rev. A B-3 195
- Implementation Notes 196
- Getting Started 197
- B-6 117379-A Rev. A 198
- Creating an Instance for MCT1 199
- 10902101 200
- 117379-A Rev. A B-9 201
- Example 1 202
- Example 2 202
- <line_no.> 203
- <value> 203
- Starting Packet Capture 205
- Terminating Packet Capture 205
- Capture file: 208
- Example 4 209
- Using Optional Features 210
- Assigning Filters 213
- <attribute_no.> 214
- Specifying the Reference 216
- Specifying the Offset 217
- Configuration Examples 219
- Example 3 220
- Example 5 221
- Settings 222
- <IP_address> 225
- B-36 117379-A Rev. A 228
- Examples 229
- B-38 117379-A Rev. A 230
- 232
- 233
- 234
- <slot no.> 235
- 236
- B-46 117379-A Rev. A 238
- B-48 117379-A Rev. A 240
- B-50 117379-A Rev. A 242
- 243
- B-52 117379-A Rev. A 244
- Bisynchronous 245
- Frame Relay 245
- Passthru 246
- Standard PPP 246
- Bay Networks Proprietary PPP 246
- B-56 117379-A Rev. A 248
- B-58 117379-A Rev. A 250
- Appendix C 251
- Packet Configuration 251
- Using the Line Subcommand 252
- Packet Configuration 253
- C-4 117379-A Rev. A 254
- Using the Load Subcommand 255
- Using the Unload Subcommand 255
- 117379-A Rev. A Index-1 257
- 117379-A Rev. A Index-3 259
- 117379-A Rev. A Index-5 261
- Packet Size, B-12, B-44 262
- 117379-A Rev. A Index-7 263
- B-47, B-48 265
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