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Cisco IO Control

Cisco as a IO control device

For some fun, i try to use my Router, for other things than routing. And here is one thing, that i have build and tested. If this is usefull or not for other peaples, i don't know, but for some of my ideas, it works.
I testet this with my Cisco1803 and IOS Version 12.4(4)T3
My IO-Cable is connected to Fastethernet Port 8

First You have to build a special cable. We need to short-out the PIN's 1 and 3 and port 2 and 6 from the RJ45 the best way is, to use al old cable and connect a switch between the Pin's

cable layout

And now, we need to configure the Port.
The best way is, to fix the Speed with (speed 100) and do "NOT" use Auto-Negotiation on the port (duplex full)!

	interface fasterhernet 8
	duplex full 
	speed 100
	no shutdown

First here is a sample, to create some Syslog Entries with Event-Manager

		
	event manager applet PORT8UP 
 	 event syslog pattern "Line protocol on Interface FastEthernet8, changed state to up"
	 action 1.0 syslog msg "PORT 8 UP"

	event manager applet PORT8DOWN
	 event syslog pattern "Line protocol on Interface FastEthernet8, changed state to down"
	 action 1.0 syslog msg "PORT 8 DOWN"

and here is the Sylog output

	May 30 21:22:14.291: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to down
	May 30 21:22:14.295: %HA_EM-6-LOG: PORT8DOWN: PORT 8 DOWN

or in this sample: reconfigure the router and send syslog message

	track 100 interface FastEthernet8 line-protocol
	!
	track 101 interface FastEthernet8 line-protocol
	!
	event manager applet UP
	 event track 100 state up
	 action 1.0 cli command "enable"
	 action 1.1 cli command "configure terminal"
	 action 1.2 cli command "hostname evil-up"
	 action 1.3 cli command "exit"
	 action 2.0 syslog msg "PORT 8 UP + Hostname Change"
	!
	event manager applet DOWN
	 event track 101 state down
	 action 1.0 cli command "enable"
	 action 1.1 cli command "configure terminal"
	 action 1.2 cli command "hostname evil-down"
	 action 1.3 cli command "exit"
	 action 2.0 syslog msg "PORT 8 Down + Hostname Change"

and here is the Sylog output

	May 30 21:52:47.611: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet8, changed state to up
	May 30 21:53:02.391: %SYS-5-CONFIG_I: Configured from console by  on vty13
	May 30 21:53:02.403: %HA_EM-6-LOG: DOWN: PORT 8 Down + Hostname Change
	May 30 21:53:02.931: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet8, changed state to down
	May 30 21:53:02.931: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to down
	May 30 21:53:03.931: %LINK-3-UPDOWN: Interface FastEthernet8, changed state to down