Pad Terminal Services - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide
[Router] interface Ethernet0/0/0
[Router-Ethernet0/0/0] ip address 201.1.1.1 255.255.255.0
[Router-Ethernet0/0/0] quit
# Configure async1/0/0 and async1/1/0.
[Router] interface async1/0/0
[Router-async1/0/0] async mode flow
[Router-async1/0/0] flow-control none
[Router-async1/0/0] interface async1/1/0
[Router-async1/1/0] async mode flow
[Router-async1/1/0] quit
# Enable Telnet redirect and configure the related parameters on the user interfaces.
[Router] user-interface tty 1 2
[Router-ui-tty1-2] undo shell
[Router-ui-tty1-2] redirect enable
[Router-ui-tty1-2] undo redirect timeout
[Router-ui-tty1-2] redirect listen-port 5000
[Router-ui-tty1-2] undo redirect refuse-negotiation
[Router-ui-tty1-2] redirect return-deal from-telnet
[Router-ui-tty1-2] flow-control none
After you complete the configurations, you can telnet from the PC using the telnet
201.1.1.1 5000 command to the console interface on Router B to control and manage
the device. If you execute the command again, you can telnet to the console port on
Router C to control and manage the device. When a device provides two console
terminals, this can save port numbers and facilitate management.

11.5 PAD Terminal Services

There are two types of user terminals: packet terminals and non-packet terminals.
Packet terminals (e.g., computers or intelligent terminals) receive and send regulated
packets and can be directly connected with the packet switched network according to
X.25 protocol. The user data generated by non-packet terminals (e.g., character
terminals) are not packets but a string of characters (bytes). Non-packet terminals can
only access the packet switched network though Packet Assembler/Disassembler
(PAD) rather than directly connect with it.
The main function of PAD is to assemble a string of characters generated in the
non-packet terminal to packets in the sending side, so as to send them to the packet
switched network. And it will disassemble the packets received in the receiving side to
characters for the non-packet terminal to receive.
V 2.41 supports X.25 PAD function which acts as a bridge to make non-X.25 terminals
access the X.25 network. You can add a device called PAD between the X.25 network
and terminals that do not support X.25 procedures to enable the latter to communicate
3Com Corporation
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Chapter 11 Terminal Services