"Setting up remote access To the DefinityÆs terminal port Prepared by Mike Dozier, (757)816-7991 firstname.lastname@example.org"
Using a Cisco routerÆs Aux port
This document assumes that you know basic Cisco configuration, and that you have enough router experience to configure various interfaces, including the Ethernet interface. Your router should be configured with at least one Ethernet interface for your network. You do not need to set up any routes unless you want to, or if the router is used for other purposes. If you have a Cisco router with an available Aux port, you can set up a reverse telnet session to provide telnet access to a Definity switch. To do this, you must first configure the aux port with the following parameters:
line aux 0 ò no exec ò password abc123 ò absolute-timeout 7 ò session-limit 1 ò login ò modem InOut ò transport preferred telnet ò transport input all ò telnet break-on-ip ò databits 7 ò parity space ò stopbits 1
You should require a password on the port to prevent unauthorized access. In this example, the password has been set to ôabc123ö. This password is in addition to the password required to login to the switch. Next you will need to connect a cable between the aux port and the switch terminal port. The easiest method is to use a Cisco console cable (P/N 72-1259- 01), and a Cisco modem mod-tap (P/N 29-0881-01) to connect the terminal port of the switch to the aux port of the router. You can also construct a cable with the following pinout: DB-25M Pin No. RJ-45 Pin No. 2 3 3 6 4 1 5 8 7 4, 5 8 7 20 2
Now you need to determine the port number that your aux port is using in the router. To do this, enter ôshow lineö from the router console. Find the aux port, and record the TTY number. Now that you have the TTY number, and the IP address, you should be able to configure a telnet session to the attached switch. For the TCP port number, you will need to add 2000 to your TTY number. For example, if your aux port uses TTY number 1, and your IP address is 192.168.1.33, then you would establish your telnet session as follows: Telnet 192.168.1.33 2001 Of course, a telnet session to port 23 will provide access to the router console. If you are using DSA, you will need to configure the connection as ônetworkö, and specify the port as 2001.