Router(config-if)#no frame-relay lmi-type cisco
These are high-speed serial interfaces that will connect to a Telco's equipment which provides you with leased-line or frame-relay connectivity.
The Cisco IGX 8400 [it's a label router] is alleged to be ideal for post, telephone, and telegraph (PTT) carriers and alternative providers that deliver frame relay and asynchronymous transfer mode (ATM) services (and more...).
The broadcast option allows packets, such as RIP updates, to be forwarded across the PVC
Well what sort of application is the 2600 router going to be used in? Here is a short thing about setting the clock http://www.learnios.com/viewtopic.php?f=4&t=36 Here a little more on setting up interfaces http://www.learnios.com/viewtopic.php?f=72&t=34 Here is password recovery steps http://www.learnios.com/viewtopic.php?f=4&t=28 Setting up cisco routers can be done many ways if you are looking for and more direct answer I suggest asking a more direct question like "how do I setup DCHP on my 2600" or how do I ip interfaces
show frame-relay map
LMI
Both ATM and Frame Relay are ways to connect your local network router to an ISP
LMI
DHCP Relay, called a helper-address in Cisco systems.
Router & Win 2008
show frame lmi