Avaya Troubleshooting Routers Guia de Resolução de Problemas Página 69
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Troubleshooting an Operational Problem
3-17
Bad Forward Checksum Errors
An event message beginning with “buf=” follows the bad forward reception buffer
checksum error. Look at the text in bold in Figure 3-
2.
Figure 3-2. Finding the Slot Number When the Message References a Backplane BOFL
Look at the number to the left of “GAME” on the first line. This is the number of
the slot receiving the packet. In F
igure 3-2, Slot 5 received the packet.
If multiple BOFL (breath of life) errors occur on the same sending or receiving
slot, you may have a problem with the associated FRE processor.
The number 0x0f00bbbb indicates a backplane BOFL packet. A backplane BOFL
packet is a BOFL packet sent from one slot to another to determine whether the
destination slot is running.
mm/dd/yy 12:35:56 141.122.57.1 5 GAME W "bad fwd receive buffer checksum"
mm/dd/yy 12:35:56 141.122.57.1 5 GAME D "buf=0x801c1b30 - 0x00000000
0x801ce400 0xffc0001 1 0x007c04a4 0x306da810 - xsum=0xd7781ec8
0x801da86c - 0x00050004 0x0022d300 0x76c00000 0x76c00000
0x801da87c - 0x8b51704d 0x30682854 0x0f00bbbb 0x0004000A
0x801da88c - 0xf300001c 0x8638002b 0xb9f1 1240 0xc0000000
0x801da89c - 0x20009000 0xa4850452 0x0002030c 0x31303030
0x801da8ac - 0x39303238 0x41343835 0x30313032 0x50534552
0x801da8bc - 0x5645525f 0x41353039 0x00000000 0x00000000
0x80"
- Troubleshooting Routers 1
- Bay Networks Software License 3
- Contents 5
- About This Guide 15
- CompuServe 16
- How to Get Help 17
- Conventions 18
- Acronyms 19
- Chapter 1 25
- Introduction 25
- Caution: 26
- Backing Up Your Files 27
- Preparing to Troubleshoot 28
- Filtering Event Messages 30
- <object> 38
- <volume> 41
- <attribute> 42
- Using Ping 44
- Using Packet Capture 45
- Documenting Each Step 47
- Chapter 2 49
- Chapter 3 53
- Damaged Router 54
- Power Problem 54
- Blown Fuse 54
- LEDs Not Lit 55
- Router Won’t Boot 55
- Checking the Boot PROMs 58
- Configuration File 58
- Example: 59
- Lost Password 62
- No Space Left on Memory Card 63
- Memory or Buffer Problem 64
- Bad Forward Checksum Errors 69
- Backplane BOFL 71
- Fault Message 72
- Chapter 4 73
- (continued) 75
- Chapter 5 79
- Dropped Frames 82
- ATM VC . . . Failed Message 82
- <slot> 87
- Troubleshooting Routers 100
- <slot_no.> 101
- <connector_no.> 101
- <setting> 101
- <instance> 103
- <ENTITY> 104
- Chapter 6 107
- Troubleshooting AppleTalk 108
- Troubleshooting DLSw 110
- Troubleshooting IP 112
- <TELNET 114
- Ping Does Not Work 115
- <slot_no.> 116
- Network Unreachable Message 117
- Host Did Not Respond Message 118
- Remote Station 120
- Troubleshooting IPX 122
- <destination_address> 125
- <service_name> 126
- Troubleshooting OSI 127
- Chapter 7 139
- Cannot Find File Message 140
- <community index> 144
- <IP address> 144
- <pathname> 147
- Chapter 8 149
- Getting Help 149
- <filename> 151
- Appendix A 153
- Reading the Event Log 153
- System Startup 154
- Dial-on-Demand Raise DTR Log 170
- Dial-on-Demand V.25bis 174
- Appendix B 189
- Run Packet Capture 189
- Implementation Notes 192
- Getting Started 192
- <slot_mask> 193
- Creating an Instance for MCT1 194
- 10902101 195
- Example 1 197
- Example 2 197
- <line_no.> 198
- <value> 198
- Enabling Packet Capture 199
- Starting Packet Capture 200
- Terminating Packet Capture 200
- <start> 201
- <count> 201
- Capture file: 203
- Using Optional Features 204
- Assigning Filters 207
- <attribute_no.> 208
- Specifying the Reference 210
- Specifying the Offset 211
- Configuration Examples 213
- Example 3 214
- Example 4 214
- Example 5 215
- <IP_address> 219
- <filename.> 219
- Displaying the File 221
- Examples: 222
- Basic Parameters 225
- <slot no.> 229
- Trigger Parameters 230
- Attribute Name 231
- Attribute 231
- MIB Object ID 231
- Filter Parameters 232
- Bisynchronous 238
- Frame Relay 238
- Passthru 239
- PTP (STANDARD) 240
- Token Ring 241
- (continued) 243
- Packet Size, B-11, B-41 250
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