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Troubleshooting Network Boot Problems
114074 Rev. A A-9
Use Packet Capture as follows:
1. Test the BOOTP server’s next-hop router in the path to the AN/ANH.
2. Test the upstream router’s interface to the AN/ANH.
3. Test the upstream router’s interface to the next-hop router.
4. Test the interfaces that receive and forward the BOOTP and TFTP
packets of the router in the middle of the path.
5. Continue testing each router in the path until you isolate the problem
interface.
Guidelines for Using a LAN Protocol Analyzer
Refer to the following guidelines when you use a LAN protocol analyzer:
• If Netboot is failing, connect the analyzer to the BOOTP server interface to
determine whether it is receiving and responding to Netboot and TFTP
requests.
To read the ASCII translation, view the BOOTP reply packets for the
configuration file pathname in hexadecimal mode.
• If the BOOTP server is not receiving the requests, make sure the upstream
router is receiving and forwarding them. If it is receiving, make sure each
router interface between the upstream router and the BOOTP server is
receiving and forwarding them.
If the BOOTP server is receiving requests, but failing to respond, refer to
“Router Fails to Netboot” earlier in this appendix.
Note: The instructions that follow assume that Version 7.80 or higher is
running on all routers in the path between the AN/ANH and the BOOTP
server.
Note: The LAN protocol analyzer does not decode all of the vendor tag fields.
- Connecting BayStack 1
- AN and ANH Systems 1
- Bay Networks Software License 3
- Contents 5
- 114074 Rev. A vii 7
- 114074 Rev. A ix 9
- 114074 Rev. A 10
- 114074 Rev. A xi 11
- 114074 Rev. A xiii 13
- About This Guide 15
- Before You Begin 16
- Conventions 17
- Acronyms 18
- 114074 Rev. A xix 19
- 114074 Rev. A xxi 21
- Bay Networks Customer Service 22
- World Wide Web 23
- Customer Service FTP 23
- Support Source CD 24
- CompuServe 24
- InfoFACTS 25
- How to Get Help 25
- Chapter 1 27
- 1-2 114074 Rev. A 28
- ANH Models 29
- 1-4 114074 Rev. A 30
- Access Node Software 31
- Software Management Tools 32
- Router Software 32
- Boot Configuration Options 33
- 1-8 114074 Rev. A 34
- The Boot Process 36
- 114074 Rev. A 1-11 37
- CAN0001A 38
- 114074 Rev. A 1-13 39
- 114074 Rev. A 1-15 41
- Local Boot 42
- CAN0006A 43
- Chapter 2 45
- EZ-Install 46
- Booting the Router Routinely 47
- Directed Netboot 48
- Completing a Startup Option 49
- 114074 Rev. A 2-7 51
- 2-10 114074 Rev. A 54
- Chapter 3 55
- Setting Up a UNIX Boot Server 55
- Setting Up BOOTP Sockets 56
- Setting Up BOOTPD to Run 57
- 3-6 114074 Rev. A 60
- 3-8 114074 Rev. A 62
- Setting Up a TFTP Server 63
- The examples in 64
- 114074 Rev. A 3-11 65
- 3-12 114074 Rev. A 66
- What to Do Next 67
- Chapter 4 69
- Configuring Network Booting 69
- Creating Configuration Files 70
- Preparing an Image 71
- Configuring Network Booting 75
- 4-8 114074 Rev. A 76
- 2. Click on Add 76
- Click on OK 77
- (Figure 4-4) 77
- 79
- 80
- CAN0007A 82
- 114074 Rev. A 4-15 83
- 4-16 114074 Rev. A 84
- 114074 Rev. A 4-17 85
- 4-18 114074 Rev. A 86
- 1. Click on Client I/F 87
- Chapter 5 91
- Network Boot Client 91
- <TFTP host> 92
- (continued) 92
- <TFTP 93
- (continued) 93
- <interface> 94
- <next 94
- <interface> 95
- <IP address> 95
- <subnet mask> 95
- <next hop 95
- 114074 Rev. A 5-8 98
- Chapter 6 99
- 101
- 6-4 114074 Rev. A 102
- 114074 Rev. A 6-5 103
- 6-6 114074 Rev. A 104
- About the N11 DCM 105
- 6-8 114074 Rev. A 106
- Ethernet Statistics Group 107
- Host Group 107
- HostTopN Group 108
- Matrix Group 108
- Filter Group 108
- Packet Capture Group 108
- Enabling the DCM 109
- 111
- 112
- 112
- 113
- 113
- 114
- 114074 Rev. A 6-19 117
- 2. Click on OK 119
- RMON Implementation Notes 121
- RMON Interoperability Issues 121
- 6-24 114074 Rev. A 122
- 114074 Rev. A 6-25 123
- 6-26 114074 Rev. A 124
- 114074 Rev. A 6-27 125
- 6-28 114074 Rev. A 126
- 114074 Rev. A 6-29 127
- Appendix A 129
- Router Fails to Netboot 131
- 114074 Rev. A A-5 133
- <connector> 135
- 114074 Rev. A A-9 137
- Displaying Parameter Settings 138
- 114074 Rev. A A-11 139
- Debugging the BOOTP Server 140
- Table A-1. BOOTP Messages 141
- <IP_address> 143
- Upgrading the Software Image 145
- Restoring a Local File System 145
- Appendix B 147
- Global Information Worksheet 149
- Router Protocol Worksheets 151
- OSPF Worksheet 152
- Wide-Area Protocol Worksheets 154
- Frame Relay Worksheet 155
- PPP Standard Worksheet 156
- CAN0008A 160
- Appendix C 161
- Implementation Notes 161
- C-2 114074 Rev. A 162
- Network Configuration Options 163
- Configuring a Single ANH 164
- 114074 Rev. A C-5 165
- Configuring Multiple Hubs 166
- CAN0010A 167
- C-8 114074 Rev. A 168
- CAN0011A 169
- CAN0012A 170
- 114074 Rev. A Index-1 171
- 114074 Rev. A Index-3 173
- 114074 Rev. A Index-5 175
- 114074 Rev. A Index-7 177
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