$ telnet raeth-ip
Connected to raeth-ip
Escape Character is 'CTRL+]'
User Access Verification
Password: password
raeth-ip> enable
Password: password
raeth-ip# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
raeth-ip(config)# clock timezone EST -5
raeth-ip(config)# clock summer-time EDT recurring
raeth-ip(config)# end
raeth-ip# write memory
Building configuration...
Compressed configuration from 6421 bytes to 2041 bytes[OK]
raeth-ip# show clock
12:03:43.516 EDT Wed May 12 2012