RARP vs inverse ARP

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"Reverse" is going back, whereas " inverse" is turning it upside down,
right?
Anyone can explain to me the difference between "RARP" and " inverse ARP" in
plain English, please?

Much appreciated!

new guy :)



Re: RARP vs inverse ARP

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RARP is an older way to assign IP addresses to an end system. It since has
been replaced by DHCP.

Inverse ARP is a mechanism used on Frame Relay PVCs to map a remote IP
address (on the other side of the cloud)
to a local DLCI (on the near side of the cloud).




Re: RARP vs inverse ARP

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I thought you use RARP to find the IP address of a device with a known MAC
address .....

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Yes, that's where I found inverse ARP, while studying Frame Relays ...

Thanks!



Re: RARP vs inverse ARP

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I think you mean BOOTP - a simpler static ancestor of DHCP.

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Not quiet - a device can only find out it's own IP address using RARP -
really from the pre-NVRAM days of diskless workstations, printers and maybe
cams or other sensor type devices that only had ROM (and Volatile RAM).

From www.whatis.com
 RARP (Reverse Address Resolution Protocol) is a protocol by which a
physical machine in a local area network can request to learn its IP address
from a gateway server's Address Resolution Protocol (ARP) table or cache. A
network administrator creates a table in a local area network's gateway
router that maps the physical machine (or Media Access Control - MAC
address) addresses to corresponding Internet Protocol addresses. When a new
machine is set up, its RARP client program requests from the RARP server on
the router to be sent its IP address. Assuming that an entry has been set up
in the router table, the RARP server will return the IP address to the
machine which can store it for future use.
RARP is available for Ethernet, Fiber Distributed-Data Interface, and Token
Ring LANs.

So there's ARP, Proxy ARP, RARP and Inverse ARP - known them well :-)

Aubrey



Re: RARP vs inverse ARP

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Agree -  plain vanilla BOOTP was used in between RARP and BP w/DHCP
extensions,
but it's the latter which is used just about everywhere at this point in
time.



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