3com 3C840 Uživatelský manuál Strana 149
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Hodnocené. / 5. Na základě hodnocení zákazníků
13
T
ROUBLESHOOTING
Introduction
This chapter contains information on the troubleshooting tools and the
troubleshooting areas for your OfficeConnect Remote 840. It is divided
into the following sections:
■
“Troubleshooting Tools”
■
“LAN Connection Problems”
■
“LAN Connection Problems”
■
“IP Wizard and Web Browser Problems”
■
“WAN Connection Problems”
■
“General Network Connection Problems”
■
“IP Network Connection Problems”
■
“IPX Network Connection Problems”
■
“Bridge Connection Problems”
Troubleshooting
To o l s
The OfficeConnect Remote 840 has a number of features which can be
used to help troubleshoot problems. They are especially useful if the
OfficeConnect Remote 840 is not visible during the troubleshooting
session.
■
OfficeConnect Remote 840 Manager's Configuration Audit (Home >
Tools > Configuration Audit) — The audit provides information
about real and potential problems in the OfficeConnect Remote 840's
current configuration. You are advised to run the audit after each
configuration change.
■
OfficeConnect Remote 840 Manager's Monitor Features (Home >
Monitor) — This provides many windows into the current state of the
OfficeConnect Remote 840. Refer to “Monitoring the OfficeConnect
Remote 840”.
840ug.book Page 1 Friday, July 7, 2000 2:23 PM
- OfficeConnect™ Remote 1
- 840 SDSL Router User’s 1
- 3Com Corporation 2
- 5400 Bayfront Plaza 2
- Santa Clara, California 2
- 95052-8145 2
- ANAGEMENT 4
- ROUBLESHOOTING 10
- DDRESSING 11
- How to Use This 16
- Conventions 16
- Document Notation 17
- Safety Information 18
- Year 2000 19
- Compliance 19
- What Is the 22
- Remote 840? 22
- What is an SDSL 23
- What is ATM? 23
- What is Frame 23
- What is a BRouter? 24
- What is a Remote 25
- What is RFC 1483 26
- What is DHCP? 27
- What is RFC 1490? 27
- What is PPP? 27
- What is DNS? 28
- What is Address 28
- Translation? 28
- What is DHCP 28
- Smart Mode? 28
- What Is Default 29
- Bridge Mode? 29
- Getting Started 29
- Remote 840 Panel 30
- Features 30
- Table 1–2 DIP Switch Modes 32
- How to Manage the 34
- Quick Link Area Main Area 36
- Where to Find More 37
- Information 37
- DMINISTRATION 39
- Modifying the Date 41
- Restoring Factory 41
- Defaults 41
- Controlling SNMP Access 43
- Controlling TFTP 44
- Assigning SNMP 45
- Trap Managers 45
- Assigning Syslog 46
- Managers 46
- Managing a 48
- Remote Site Profile 48
- Configuring 50
- Network Service 50
- Information (PPP / 50
- RFC 1483 / RFC 50
- Configuring ATM 52
- Configuring ATM Information 53
- Protocol Parameters 54
- Monitoring Remote 54
- Site Connections 54
- Enabling IP Routing 56
- Configuring IP for 56
- Configuring IP for the LAN 57
- Configuring IP RIP 59
- Configuring IP 65
- Using IP Address 66
- Validation 66
- Using IP Address Validation 67
- Monitoring 68
- IP Testing (PING) 68
- Bridging for the 75
- Connections 76
- Bridging IP Traffic 77
- MAC-Encapsulated 78
- Bridge Firewall 79
- Advanced Bridging 81
- Default Bridge 82
- Bridging 83
- Testing Bridging 83
- Selecting Address 85
- Translation 85
- Configuring the PAT 86
- Default Address 86
- PAT Port Entries 87
- Configuring NAT 88
- Configuring the 92
- DHCP Mode 92
- DHCP Server 93
- DHCP Relay 94
- Monitoring DHCP 94
- DHCP Smart Mode 94
- Configuring DNS 98
- Remote DNS 98
- Configuring Static 100
- DNS Host Entries 100
- ONFIGURING 101
- Configuring IPX for 102
- Remote Sites 103
- Connection 103
- Configuring IPX 105
- Static and Framed 105
- Services 107
- Configuring IPX RIP 110
- Configuring IPX RIP and SAP 111
- Monitoring IPX 112
- IPX Testing 112
- Introduction 115
- Obtaining Updated 115
- OfficeConnect 115
- Remote 840 115
- Software 115
- Installing 116
- Operational 116
- Software to the 116
- Remote 840 Unit 116
- ONITORING 119
- Ethernet Interface 121
- Interface Status 123
- Remote Site 125
- Address Translation 129
- Events Logs 133
- Filtering 136
- Capabilities 136
- Table 12–1 Data Filters 137
- __ (0- 1514 bytes) 143
- LAN Connection 151
- Problems 151
- IP Wizard and Web 151
- Browser Problems 151
- WAN Connection 154
- General Network 155
- IP Network 157
- IPX Network 160
- Bridge Connection 161
- Bridging and 163
- Routing Concepts 163
- How Bridges Learn 164
- Network 168
- Organization 168
- Structure, and 168
- Physical Layout 168
- Figure A–3 Example Network 169
- IP Routing 171
- IP Addressing Basics 175
- B: IP A 176
- RANSLATION 183
- Network Address 184
- Translation (NAT) 184
- Figure C–1 NAT Example 185
- Port Address 186
- Translation (PAT) 186
- Figure C–2 PAT Example 187
- Overview 189
- Instructions for 191
- Internet Access 191
- Telecommuting / 197
- Remote Office 197
- Using the 203
- Configuration 203
- Saving the 204
- Te s t i n g t h e 204
- TECHNICAL SUPPORT 205
- Support from 3Com 206
- Returning Products 206
- 3Com Corporation L 219
- TATEMENT 221
- ECLARATION 221
- ONFORMITY 221
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