HP 10BASE-T User's Guide Page 67
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- Table of contents
- TROUBLESHOOTING
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HP J2624A Dial-A-LAN 4A
If you need more than two ports, the HP Dial-A-LAN 4A has four RS-232
ports for connecting up to four external modems. This module can also
be used in an ISDN environment.
Both the 2-Port and 4-Port modules support these features:
Access speeds available to 115 Kbps. Throughput speeds available
are dependent on line quality, type of data transmitted, and the
remote node’s ability to function at this sustained rate.
Configurable through HP Stack Manager and from the Dial-A-LAN
Manager. Dial-A-LAN Manager can be run under OpenView
DOS/Windows and Windows.
PC and workstation dial-in access with PPP (default), SLIP, and
CSLIP. IP, IPX, NetBEUI, and LLC dial-in are also supported.
PPP Stacker Compression available for dial-in and LAN-to-LAN
connections.
DHCP support for dial-in client address assignment.
Macintosh dial-in access for IP networks with ARPA 2.0. MacTCP
supported for IP connections.
Windows support and DOS-based dial-out access through NASI and
Int 14 for IPX networks to remote BBS services. No file transfer
capability is available in IP dial-out mode.
UNIX workstation dial-in access with SLIP or PPP for IP networks.
LAN-to-LAN routing for IP and IPX.
For more information about the HP Dial-A-LAN modules, see the
accompanying documentation.
Hub Reference
Hub Reference
3-18
- HP AdvanceStack 10Base-T Hubs 1
- All Rights Reserved 2
- Features 4
- (continued on next page) 4
- (continued) 5
- HP Customer Support Services 7
- Contents 8
- 3 Hub Reference 10
- 4 Troubleshooting 11
- A Cables and Connectors 12
- B Specifications 12
- C Network Addressing 12
- D Backup Links 13
- 10Base-T Hubs 14
- Installation Summary 15
- Installation Steps 16
- 2. Verify the Hub’s Operation 17
- 3. Mount the Hub 18
- 10-mm M4 19
- Important 20
- Mounting the Hub on a Wall 23
- to the Hub 24
- Distributed Management 26
- Network Port Connections 27
- 24681012 1357911 28
- 10Base-T 28
- 24681012 28
- Cable Management 32
- Installing and Using 38
- HP Stack Manager 38
- Software Description 39
- Computer Requirements 40
- Installing and Starting 41
- Communications Settings 43
- Connect/Disconnect 43
- Automatic Chain Display 44
- Online Help 44
- Port Status Display 44
- LAN Traffic Statistics 44
- Hub Identification 44
- Port Enable/Disable 45
- Port Counters 45
- Redundant Power Supply (RPS) 45
- Advanced Features 46
- IP Configuration 47
- Password 47
- Authorized Managers 48
- Backup Link 48
- Robust Port Control 48
- Network Tests 49
- Factory Reset 49
- Hub Reference 50
- Front Panel 51
- Back Panel 51
- Front of the hub 52
- How the Hubs Work 54
- Auto-Segmentation 55
- Link Beat 56
- Managing Your Hub — 57
- HP Distributed Management 57
- Chaining the Hubs 58
- Out-of-Band Management 58
- In-Band (Network) Management 58
- Security Features 59
- Port Security 60
- Authorized Managers List 60
- Optional Modules 61
- HP Transceiver Modules 63
- HP Router Module 64
- HP Dial-a-LAN Remote Access 66
- HP J2624A Dial-A-LAN 4A 67
- Firmware Enhancements 68
- Troubleshooting 70
- Troubleshooting Approaches 71
- Diagnosing with the LEDs 72
- LED Error Indications 73
- Installation Problems 75
- Cabling Problems 76
- Unusual Network Activity 77
- IP Configuration Errors 77
- Diagnostic Tests 78
- Testing Twisted-Pair Cabling 79
- Clearing a Password 80
- Customer Support Services 81
- CompuServe 83
- Cables and Connectors 86
- Recommended Cables 88
- Twisted-Pair Cable/Connector 89
- Pin-Outs 89
- Management Chaining 90
- (not a network connection) 90
- Hub-to-Hub Network Connection 91
- ThinLAN Cable Requirements 92
- AUI Cable Minimum Pin-Out 93
- RS-232 Connector and Cable 94
- RS-232-C “Null Modem” Cable 95
- (supplied with the hub) 95
- RS-232-C Modem Cable 95
- Specifications 96
- Network Addressing 100
- Communication Between the Hub 101
- IPX Addressing Notes: 102
- Networks 103
- Using BOOTP 105
- This tag must precede the 106
- For the HP 106
- Backup Links 108
- Description 109
- Limitations 110
- Additional Notes 110
- Configuring a Backup Link 111
- Identifying the Backup Link 112
- Indications of Backup Link 113
- Activation 113
- Reactivating the Primary Link 114
- Example Topologies 115
- Safety Information 119
- Symboles de sécurité 120
- Safety and Regulatory 120
- Statements 120
- Hinweise zur Sicherheit 121
- Simboli di sicurezza 122
- Símbolos de seguridad 123
- Regulatory Statements 125
- Declaration of Conformity 126
- *5964-4601* 136
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