Technical data
Table Of Contents
- Preface
- Introduction
- Chapter 1. Advanced Topics
- Chapter 2. Planning For Router Configuration
- Important Terminology
- Collect your Configuration Information
- PPP Link Protocol (over ATM or Frame Relay)
- IP Routing Network Protocol
- IPX Routing Network Protocol
- Bridging Network Protocol
- RFC 1483 / RFC 1490 Link Protocols
- IP Routing Network Protocol
- IPX Routing Network Protocol
- Bridging Network Protocol
- MAC Encapsulated Routing: RFC 1483MER / RFC 1490MER Link Protocols
- IP Routing Network Protocol
- FRF8 Link Protocol
- IP Routing Network Protocol
- Dual Ethernet Router Configuration
- General Information
- Configuring the Dual Ethernet Router as a Bridge
- Configuring the Dual Ethernet Router for IP Routing
- Chapter 3. Configuring Router Software
- Configuration Tables
- Configuring PPP with IP Routing
- Configuring PPP with IPX Routing
- Configuring PPP with Bridging
- Configuring RFC 1483 / RFC 1490 with IP Routing
- Configuring RFC 1483 / RFC 1490 with IPX Routing
- Configuring RFC 1483 / RFC 1490 with Bridging
- Configuring MAC Encapsulated Routing: RFC 1483MER / RFC 1490MER with IP Routing
- Configuring FRF8 with IP Routing
- Configuring Mixed Network Protocols
- Configuring a Dual Ethernet Router for IP Routing
- Verify the Router Configuration
- Sample Configurations
- Sample Configuration 1 — PPP with IP and IPX
- Scenario
- Sample Configuration 1 — Diagram for Target Router (SOHO)
- Sample Configuration 1 — Tables For Target Router (SOHO)
- Sample Configuration 1 - Check the Configuration with the “list” Commands
- Information About Names And Passwords
- Sample Configuration 2 — RFC 1483 with IP and Bridging
- Scenario
- Sample Configuration 2 — Diagram for Target Router SOHO
- Sample Configuration 2 — Tables For Target Router (SOHO)
- Sample Configuration 2 - Check the Configuration with the “list” Commands
- Sample Configuration 3 — Configuring a Dual Ethernet Router for IP Routing
- Scenario
- Configuration Tables
- Chapter 4. Configuring Special Features
- Bridging Filtering and IP Firewall
- IP (RIP) Protocol Controls
- DHCP (Dynamic Host Configuration Protocol)
- General Information
- Manipulating Subnetworks and Explicit Client Leases
- Enabling/disabling a subnetwork or a client lease
- Adding subnetworks and client leases
- Setting the lease time
- Manually changing client leases
- Setting Option Values
- Concepts
- Commands for global option values
- Commands for specific option values for a subnetwork
- Commands for specific option values for a client lease
- Commands for listing and checking option values
- BootP
- About BootP and DHCP
- Enable/Disable BootP
- Use BootP to specify the boot server
- Defining Option Types
- Concepts
- Commands
- Configuring BootP/DHCP Relays
- Other Information
- NAT (Network Address Translation)
- Management Security
- Software Options Keys
- Encryption
- IP Filtering
- L2TP Tunneling - Virtual Dial-Up
- Introduction
- L2TP Concepts
- LNS, L2TP Client, LAC, and Dial User
- L2TP Client Example
- LNS and L2TP Client Relationship
- Tunnels
- Sessions
- Configuration
- Preliminary Steps to Configure a Tunnel
- Verification Steps
- Configuration Commands
- PPP Session Configuration
- Sample Configurations
- Simple L2TP Client Configuration Example
- Complete LNS and L2TP Client Configuration Example
- Configuration Process
- Chapter 5. Command Line Interface Reference
- Command Line Interface Conventions
- System Level Commands
- Router Configuration Commands
- Target Router System Configuration Commands (SYSTEM)
- Target Router Ethernet LAN Bridging and Routing (ETH)
- Remote Router Access Configuration (REMOTE)
- Asymmetric Digital Subscriber Line Commands (ADSL)
- Asynchronous Transfer Mode Commands (ATM)
- Dual Ethernet Router Commands (ETH)
- General information
- High-Speed Digital Subscriber Line Commands (HDSL)
- General information about HDSL
- ISDN Digital Subscriber Line (IDSL)
- General information about IDSL
- Symmetric Digital Subscriber Line Commands (SDSL)
- General information about SDSL
- Dynamic Host Configuration Protocol Commands (DHCP)
- L2TP — Virtual Dial-Up Configuration (L2TP)
- Bridging Filtering Commands (FILTER BR)
- Save Configuration Commands (SAVE)
- Erase Configuration Commands (ERASE)
- File System Commands
- Chapter 6. Managing the Router
- Simple Network Management Protocol (SNMP)
- TELNET Remote Access
- Client TFTP Facility
- TFTP Server
- BootP Server
- Boot Code
- Manual Boot Menu
- Access Manual Boot Mode
- Option 1: Retry Start-up
- Option 2: Boot from FLASH Memory
- Option 3: Boot from Network
- Option 4: Boot from Specific File
- Option 5: Configure Boot System
- Option 6: Set Time and Date
- Option 7: Set Console Baud Rate
- Option 8: Start Extended Diagnostics
- Identifying Fatal Boot Failures
- Software Kernel Upgrades
- Backup and Restore Configuration Files
- FLASH Memory Recovery Procedures
- Recovering Passwords and IP Addresses
- Batch File Command Execution
- Chapter 7. Troubleshooting
- Appendix A. Network Information Worksheets
- Configuring PPP with IP Routing
- Configuring PPP with IPX Routing
- Configuring PPP with Bridging
- Configuring RFC 1483 / RFC 1490 with IP Routing
- Configuring RFC 1483 / RFC 1490 with IPX Routing
- Configuring RFC 1483 / RFC 1490 with Bridging
- Configuring RFC 1483MER / RFC 1490MER with IP Routing
- Configuring FRF8 with IP Routing
- Configuring a Dual Ethernet Router for IP Routing
- Appendix B. Configuring IPX Routing
- Index

87
first private port:
if specified, it is a port remapping of the incoming request from the remote end.
first port
maps to
first private port
.
first port
+ 1 maps to
first private port
+ 1.
last port
maps to
first private port
+
last port
-
first port
first port
through
last port
are the ports as seen by the remote end.
first private port
through
first private port
+
last port
-
first port
are the equivalent ports the server on
your local LAN will receive the request.
This command is used to view all of the remote entries, including the changes.
remote list <
remoteName
>
Remember to type
save
to make the changes persistent across boots.
Example 1:
Assume that the local LAN network is 192.168.1.0 255.255.255.0. The following commands are typed to
enable a Telnet server on the local LAN with the IP address 192.168.1.3, and an FTP server with the IP
address 192.168.1.2.
remote addServer 192.168.1.3 tcp telnet router1
remote addServer 192.168.1.2 tcp ftp router1
When receiving a request from
router1
to communicate with the local Telnet server, the local router will
send the request to 192.168.1.3. If
router1
asks to talk to the local FTP server, the local router will send
the request to 192.168.1.2.
Example 2:
Assume that the local LAN network is 192.168.1.0 255.255.255.0. When the port value of 0 (zero) is
used, it directs all ports of the specified protocol to the IP address specified.
remote addServer 192.168.1.4 tcp 0 router1
Note: addserver
commands using specific port numbers take priority over the port # 0 setting.
192.168.1.4 will be asked to serve requests coming from
router1
to the local router. If the local
router also has the same Telnet and FTP entries from the previous example, 192.168.1.3 will serve
the Telnet request, 192.168.1.2 will serve the FTP request, and 192.168.1.4 will serve any other
request, including HTTP, SMTP, etc.
Example 3:
remote addServer 192.168.1.10 tcp 9000 9000 telnet route-in
remote addServer 192.168.1.11 tcp 9001 9001 telnet route-in
In this example, an incoming request on tcp port 9000 will be sent to 192.168.1.10 with the port changed
from 9000 to the telnet (port 23).
An incoming request on tcp port 9001 will be sent to 192.168.1.11 with the port changed from 9001 to
the telnet port.
“Failed to add server” error message
The error message
“Failed to add server"
is printed if a server entry could not be created. Possible
reasons are as follows:










