telnet 38.242.250.252 6003
<hit the enter key several times>

If you receive this error:
(kotfilad@staff1) telnet 38.242.250.252 6006
Trying 38.242.250.252...
telnet: Unable to connect to remote host: Connection refused
Someone else is telnetted into your router.

Router>enable 
Router#copy running-config startup-config
Destination filename [startup-config]? <hit enter> 
Building configuration...
[OK]
Router##erase startup-config <hit enter>
Erasing the nvram filesystem will remove all files! Continue? [confirm] <hit enter>
[OK]
Erase of nvram: complete  
Router#reload <hit enter>
Proceed with reload? [confirm] <hit enter>

Would you like to enter the initial configuration dialog? [yes/no]: no

Would you like to terminate autoinstall? [yes]: <enter>

en
conf t
hostname p2r2
line con 0
 logging synchronous
 exec-timeout 0 0

interface Ethernet1
 ip address 20.0.0.1 255.255.255.0
 no shutdown

interface Ethernet0
 ip address 22.0.0.1 255.255.255.0
 no shutdown

interface Serial1
 ip address 21.0.0.1 255.255.255.0
 no shutdown

router igrp 200
 network 20.0.0.0
 network 21.0.0.0
 network 22.0.0.0 
 end

wr mem