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Troubleshooting
GR2K-GA-0015 7-49
Ver. 07-02
Procedure for changing the MSS information
Confirm the setting value of mss for the PPPoE information by using the
configuration definition command (CLI type 1) show pppoe.
[Result of the execution]
7.5.4 Troubleshooting NAT Communication Failures
Three factors that may produce communication troubles in the NAT and NAPT are as
follows:
1. Error in setting the configuration defining information related to NAT and NAPT.
2. Changes in the network configuration.
3. Impediments in the relaying network.
Regarding 2 above, investigate the difference in the network configuration before and
after the change, and check for any cause that may hinder communication.
This section assumes that the setting of a network card and cable connections has
been confirmed and explains the impediment positions and the procedure for
dividing the causes thereof in cases as shown in 1 and 3 above that: “no IP
communication is possible even though the configuration defining information and
the network configuration are correct,” “IP communication is no longer possible
because the configuration defining information was changed” or “conversion of the IP
address and the port number has become impossible.”
See Table 7-15, DHCP Client Communication Failures Troubleshooting Chart, for a
flowchart for troubleshooting these failures.
Set a value smaller than the current
setting, or perform auto setting (1).
Input the next command to make the setting
information effective.
current mss value.
- Hitachi Gigabit Router GR2000 1
- Series Enhanced Version 1
- (FCC) Compliance 2
- Trademarks 2
- Release 06-05 (January 2003) 3
- Change Record 3
- Abbreviations 5
- Acknowledgments 11
- [BSDI Internet Server] 13
- AT&T (DAVID M. GAY) 14
- INFO-ZIP GROUP 14
- INTERNET SOFTWARE CONSORTIUM 14
- SIGMASOFT, TH. LOCKERT 15
- SUN MICROSYSTEMS, INC 15
- UNIVERSITY OF TORONTO 16
- WILDBOAR 17
- MARTIN BIRGMEIER 17
- CHRISTOPHER G. DEMETRIOU 17
- DAVID HOVEMEYER 18
- FRANK VAN DER LINDEN 18
- THEO DE RAADT 19
- HENRY SPENCER 19
- [diff, grep] 20
- [tcpdump] 21
- [traceroute] 22
- [Apache HTTP server] 23
- [Xntp Program] 23
- [MD5 Program] 24
- [mrouted] 25
- [PIM sparse-mode pimd] 25
- [KATE IPv6 STACK] 26
- Safety Guide 29
- Specific Warning Instructions 30
- Specific Caution Instructions 31
- Other Instructions 32
- Table of Contents 33
- List of Figures 43
- List of Tables 49
- Chapter 1 51
- Before Operation Start 51
- GR2K-GA-0015 1-3 53
- 1-4 GR2K-GA-0015 54
- 1.2.1 Console 55
- 1.2.1.4 RS-232C 56
- 1.2.1.5 Modem 56
- 1.2.3 Backup MC 58
- Chapter 2 59
- Starting the router 59
- 2.2 Starting the router 61
- 2.3 Stopping the router 61
- 2.4 Logging in from a console 62
- Chapter 3 63
- Command operation 63
- 3.2.1 Login 65
- 3.2.2 CLI Actuation 65
- 3.2.3 CLI Termination 65
- 3.2.4 Prompt 66
- 3.2.5 Complement Function 67
- 3.2.6 Help Function 67
- 3.2.9 History Function 69
- 3.2.10 Pipe 70
- 3.2.11 Redirect Function 71
- 3.2.12 Paging 71
- 3.2.13 Warning Messages 71
- 3.2.15 Automatic Logout 72
- 3-16 GR2K-GA-0015 78
- Chapter 4 79
- 4.2 Setting login security 81
- 4.3 Setting the time 84
- 4.4.1 RM/RP board 85
- 4.4.2 NIF board 86
- 4.5.1 Overview 87
- 4.6 Consideration of security 88
- 4.7.1 Setting using command 89
- Terminal 90
- IP address of own router 91
- Must be “aux.” 91
- Double-click 92
- Click [OK] 94
- Double-click the 94
- Click [Next] 95
- [Make New Connection] icon 95
- Click [Finish] 97
- Click the new icon with 97
- Click [Properties] 97
- Click [Connect] 99
- 4-22 GR2K-GA-0015 100
- Ver. 07-02 100
- Chapter 5 101
- 5.1.1.1 Physical interface 102
- MAC address must have been 103
- 5.1.2.3 Frame Relay 104
- 5.1.2.1 Physical interface 104
- 5.1.2.2 PPP 104
- 5.1.2.4 ISDN PPP 105
- Both or either of the 116
- 5-20 GR2K-GA-0015 120
- 5.4.2.1 Interface information 121
- 5.4.2.2 Adjacent information 122
- This Router 123
- PIM Router 123
- (non-PIM) 123
- 5.4.3.1 Interface information 125
- 5.4.3.2 Adjacent information 126
- 5.4.4.1 Interface information 127
- 5.4.4.2 Group information 128
- 5-36 GR2K-GA-0015 136
- Figure 5-68 Log display 136
- 5.7.2.1 Interface information 140
- 5.7.2.2 Adjacent information 141
- 5.7.3.1 Interface information 143
- 5.7.3.2 Group information 144
- Confirm here 147
- Chapter 6 155
- Tasks During Operation 155
- 6.3 Confirming operation log 158
- 6.5 Confirming MC capacity 161
- 6.6.1 Adding the boards 162
- 6.7 Switching mode 164
- Chapter 7 167
- Troubleshooting 167
- 7.1.1 FAULT CODE is displayed 168
- 7.1.3 Mode cannot be switched 168
- 7.1.4 MC cannot be accessed 169
- 7.3.2 Dump file is created 175
- 7.3.3 Core file is created 176
- It must read “connected” 213
- MAC address must 213
- Confirm this content 217
- Section 5.2 219
- Both or one of these 220
- IP address has been set 222
- GR2K-GA-0015 7-57 223
- 7.7.2.1 PIM-SM network 227
- 7.7.2.2 PIM-SSM network 228
- [ROUTE-OS6] 231
- 7.8.3.1 Confirmation of State 238
- 7.10.1.1 PIM-SM network 246
- 7.10.1.2 PIM-SSM network 247
- 7.11.2.2 Check transfer state 250
- 7.11.7.2 Check label 253
- 7.11.7.4 Check LSP 253
- 7-90 GR2K-GA-0015 256
- COPS is Started 257
- COPS is in Operation 258
- SNMP manager 260
- Chapter 8 263
- Maintenance Procedure 263
- Changes the dialog mode 266
- Selects binary mode (Note 1) 266
- Transmits the dump file 266
- GR2K-GA-0015 8-5 267
- Status of the standby system 272
- Operation mode is “duplex.” 290
- Expand the RP memory 292
- Install the RP again 292
- Start operation of the RP 292
- Stop operation of the RP 292
- Remove the RP 292
- Type of line (must comply 297
- Status of line 297
- 8.7 Line Test 299
- 8.7.2 Testing on WAN Line 300
- Must be 0 305
- 8.7.3 Testing on ATM Line 306
- Must be “up” 307
- 8-46 GR2K-GA-0015 308
- Chapter 9 309
- Software updating 309
- 9.1 Outline 310
- 9.2 Operation after updating 311
- 9-4 GR2K-GA-0015 312
- Appendix 313
- < Alphabet > 314
- VBR queue 324
- Virtual links 324
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