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Frame Relay Local Management Interface - Global Addressing Question
Hi All,
I just can't figure out how Frame Relay LMI change the DLCI from local significant to global significant. I also want to know what Inverse ARP do. Is there anyone can explain these to me in detail? or give me url to address these questions?
Thanks
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by: harbor235Posted on 2006-01-10 at 04:30:32ID: 15659278
>I just can't figure out how Frame Relay LMI change the DLCI from local significant to global significant.
It does not change the significance, the frame switch that a network device physically connects to knows about the DLCI. Once the frame leaves that frame switch the DLCI may change to route traffic to a particular endpoint, thats why we say it is locally significant only. Your frame provider maps out your path through the frame network with permanent virtual circuits.
It allows a network device to to resolve a layer 2 address into a IP address.
More specifically:
Inverse ARP, described in RFC 1293, was created for Frame Relay networks. This protocol defines a method for routers on a Frame Relay network to learn the protocol addresses of other routers in a way that very efficiently reduces traffic. Inverse ARP discovers protocol addresses by sending Inverse ARP request packets to the hardware addresses for its Frame Relay circuits. Conversely, Inverse ARP allows the routers at the other end of each circuit to learn your router's protocol addresses. (For Frame Relay circuits the circuit identifier is the equivalent of a hardware address. See the Frame Relay topic in the Online Library.)
http://www.framerelayforum
harbor235 ;}