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3Com 3C8S5907 User Guide - Page 69

Example 1

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69 Example 1 In Figure 18, the ISP is configured to create a tunnel from the ISP's access server to the central site. This method can also be used for a remote office if you do not want to configure tunneling on the bridge/router at the remote office. Figure 18 ISP to Central Site Tunnel Access ISP server PPTP or L2TP tunnel Central site Remote workstation Total Control hub Authentication server Firewall or CSU/DSU (optional) PathBuilder switch Authentication server The connection process typically follows this order: s The remote user (the client) dials the ISP. s The ISP assigns an IP address to the remote user client. s The ISP checks its authentication server for the user, and creates a PPTP (or L2TP) tunnel to the central site based on authentication data. s The central site checks its authentication server to verify that this user can access the network and forwards the data. No special configuration is required on the remote user computer except the configuration required to dial into the ISP's access server. At the central site, follow these steps: 1 Configure the L2Tunnel Service (see the Configuring L2Tunnel Connections chapter in Using Enterprise OS Software) to enable the PathBuilder switch as a tunnel terminator. 2 Configure the firewall device (if present), or the PathBuilder switch, to allow tunnel traffic through (see the Building Internet Firewalls chapter in Using Enterprise OS Software).

Section	Page
About This Guide	13
Conventions	13
Year 2000 Compliance	14
Overview of the PathBuilder Switch	15
Using Ethernet LAN Interfaces	15
Using Flex-WAN Serial and Ultra-WAN CSU/DSU Interfaces	16
Using ATM Interfaces	16
Telco Services	17
Using PPP on Dial-Up and Leased Lines	18
Using Packet-Switched Network Services	18
IBM Legacy Networks	18
Hardware Features	20
Back and Front Panels	20
Hardware Interrupt Switch	23
Reset Button	23
Installing the Hardware	25
Required Equipment	25
Mounting the Switch	26
Environmental Requirements	26
Mounting Kit	26
Installing on a Tabletop	27
Stacking with Brackets	27
Installing in a Rack	28
Cabling the Connectors	29
Cabling the LAN Connectors	29
Cabling the Flex-WAN Serial Connectors	30
Cabling the Ultra-WAN CSU/DSU Connectors	30
Cabling the HSSI T3/E3 Connectors	31
Cabling the Coax T3/E3 (BNC) Connectors	31
Cabling the ATM Connectors	32
Cabling the ATM OC3 Connectors	32
Cabling the ATM Coax (DS3/E3) Connectors	33
Attaching a Redundant Power System	33
Connecting a PC, Terminal, or Modem	34
Shutting Down	35
Logging On and Performing Administrative Tasks	37
Starting the System	37
Verifying Successful Startup	38
Logging On to theSystem	39
Configuring an IP Address	39
Choosing the User Interface	40
Deciding Which Interface to Use	40
Using Menus	41
Using the Command-line Interface	42
Using Web Link	43
Using Transcend	43
Changing the Root Password	43
Changing the Default Console Port Baud Rate	44
Adding User Accounts	45
Setting the Time and Date	45
Setting System Information	46
Setting Up Security Access	46
Basic Configuration of Ports, Paths, and Connectors	49
Multiple Port and Path Bindings	50
Dynamic Paths	50
Virtual Ports	50
Port/Path Services and Syntax	51
Connector Services and Syntax for Ultra-WAN Interfaces	51
Model S500	52
Model S580	52
Model S590	53
Model S593/S595	53
Model S598 and S599	54
Model S574 and S578	54
Configuring Ethernet Paths and Ports	55
Configuring the Ultra-WAN CSU/DSU Interfaces	56
Configuring a CSU/DSU Interface for ISDN PRI Dial Service	57
Configuring a CSU/DSU Interface for Single Path, Unstructured Service	59
Configuring a CSU/DSU Interface for Multiple Path, Channelized Service	60
Configuring the High-Speed T3 Interface	62
Configuring the ATM Interfaces	62
Where To Go From Here	65
Configuring and Monitoring Virtual Private Networks	67
Using Tunnels	67
ISP to Central Site Tunneling	68
Remote User to Central Site Tunneling	68
Example 1	69
Example 2	70
On the Remote Office OfficeConnect Bridge/Router	72
On the Central Site PathBuilder Switch	73
Web Link Health Monitor	73
Secure VPN Manager	73
InfoVista	74
Serial devices	75
Dial Serial Device Requirements	75
Technical Support	77
Online Technical Services	77
World Wide Web Site	77
3Com Knowledgebase Web Services	77
3Com FTP Site	78
3Com Bulletin Board Service	78
Access by Analog Modem	78
Access by Digital Modem	79
3Com Facts Automated Fax Service	79
Support from Your Network Supplier	79
Support from 3Com	79
Returning Products forRepair	81
Connectors and Cables	83
Console Connector and Cables	83
PC Cable	83
Terminal Cable	84
Modem Cable	84
LAN Connector and Cables	85
10BASE-T Cabling	85
Cabling Standards	86
100BASE-TX Cabling	86
Creating a Valid Network	86
Flex-WAN Serial Connectors and Serial Cables	90
RS-232 DTE Cable Pinouts	93
RS-232 DCE Cable Pinouts	94
V.35 DTE Cable Pinouts	95
V.35 DCE Cable Pinouts	96
X.21 DTE Cable Pinouts	97
X.21 DCE Cable Pinouts	98
RS-449 DTE Cable Pinouts	99
RS-449 DCE Cable Pinouts	100
RS-530 DTE Cable Pinouts	102
Ultra-WAN CSU/DSU Connectors and CSU/DSU Cables	103
Ultra-WAN Connectors and Line Converters for 75 ohm Systems	104
High-speed Serial Interface (HSSI) Cables	105
Customizing Your Software	107
Path and Port Naming Restrictions	107
Working with Dial Number Lists	108
Adding a Phone Number	108
Redialing When the Connection Fails	108
Dialing the Same Phone Number Multiple Times	108
Positioning a Phone Number	109
Editing an Existing Phone Number	109
Deleting a Phone Number	109
Troubleshooting	111
Using the Monitor Utility	111
Boot	112
Configure Flash Load	112
Clear PID	112
Display Files	113
Dump	113
Flash Load	113
Help	114
Repeat Last Command	114
Self Test	114
Normal LED Meanings	115
System LEDs	115
LAN LEDs	116
Flex-WAN Serial LEDs	116
Ultra-WAN CSU/DSU LEDs	117
T3/HSSI Serial LEDs	117
ATM LEDs	118
Error LED Meanings	118
Troubleshooting During the Load Phase	118
Troubleshooting During the Test Phase	123
Performing Loopback Tests on the Flex-WAN Serial and Ultra-WAN CSU/DSU Interfaces	123
Configuring a RX to TX Loopback via the Command Line on the Ultra-WAN CSU/DSU Interface	125
Response to Loopback Assertions from Link Partner on Flex-WAN Serial and Ultra-WAN CSU/DSU Interf...	126
Response to Local Loopback Assertion on a Flex-WAN Serial Interface	126
Response to a Loopback Assertion via Inbound BoP and MoP Messages on an Ultra-WAN CSU/DSU Interface	127
Performing T3/E3 Loopback Tests	127
Performing a Memory Dump	129
Configuring the Dump Destination	129
Obtaining the MAC Address	131
Creating Files for the Memory Dump	131
Partial Dump File	131
QuadWan Dump Files	132
Full Dump Files	133
Verifying the TFTP Process	134
Verifying the Memory Dump Procedure	134
Reloading the System Software	139
Reloading the Software	140
Load Errors	141
Completing The Ultra-WAN Configuration	143
Overview	143
Example Configuration Templates	144
Completing The ATM Configuration	163
Overview	163
Example Configuration Templates	164
Commands and Parameters For Ultra-WAN CSU/DSU Interfaces	167
CLock	169
CONNector	169
ConnConFig	170
ConnControl	170
ConnCouNTers	170
ConnStatus	172
FrameMode	173
LineDistance	173
Line ENCoding	174
SwitchType	174
WanCounters	175
Connector-level Commands	176
Flush	176
LPBCK	176
Path Parameters	177
ChannelBaud	177
ChannelMap	177
Performance Monitoring and Loopback Support on UltraWAN Connectors	179
ATT TR54016 Compliance	179
ANSI T1.403-1995 Compliance	180
Additional Performance Monitoring Support on the Console Interface	180
WanCounters	181
ConnCouNTers	182
FLUSH	184