02-09-2007 06:35 AM - edited 03-05-2019 02:15 PM
Hi all, are eigrp neighbours directly connected routers ? and how come rip/igrp dont have neighbours, what benefit does this have ?
02-09-2007 07:30 AM
Hello,
yes, eigrp neighbors are directly conneted.
EIGRP and OSPF are Link State protocols.
RIP and IGRP are distance vector protocols.
Link State advantages: Fast Convergence
Link State disatvabtages: processor and memory intensive
Distence Vector advatages: Need less memory and processor
Distance Vector disatvantages: slow convergence
Bye
Jo
02-10-2007 05:19 AM
EIGRP builds neighbor relationships with adjacent EIGRP speakers to facilitate reliable routing data transmission through the network. While EIGRP is a distance vector routing protocol, it uses DUAL, rather than Bellman-Ford, to discover the best path. DUAL can converge as fast, or faster, than a link state protocol, in different network designs, but neighbor relationships are required for DUAL to work properly.
RIP and IGRP, using Bellman-Ford, rely on data retransmission, rather than reliable data transmission. Relying on data retransmission slows convergence speed.
HTH.
:-)
Russ
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