EIGRP
·
Eigrp stands for Enhanced interior gateway routing protocol
·
It uses dual ( diffuse
update algorithm ) for reliability and choosing backup paths
·
It is a Hybrid
Protocol which is also known as Advance distance vector protocol (
Combination of Distance Vector & Link state protocols )
·
Administrative
distance = internal (90) external (170) ( External Routes when the routes
Redistributed in EIGRP it shows ad value 170 in Routing table )
·
Eigrp is now an open
standard, Cisco Made it open standard in Year 2013.
There any many things which are in the basics
of EIGRP.
OSPF
·
OSPF stands for Open
Shortest Path First
·
It’s a link state
protocol
·
It uses SPF (shortest
path first) Hello 10 sec's hold down timer 40 sec's Dijkstra's algorithm
·
Metric is cost
(cost=10 ^8/B.W.)
·
Administrative distance
is 110
·
Mostly used in
Interior gateway protocols.
Common Features
·
Both are
classless routing protocol
·
Both supports VLSM and
CIDR
·
Both Open Standard
·
Supports
Authentication
·
Faster convergence
·
Trigger/Incremental
updates
EIGRP
|
OSPF
|
Maximum 255 hops, Default is 100
Eigrp Doesn’t have a concept of Areas.
Eigrp Knows what its neighbour knows
( this is
also known as Routing by Rumor )
It supports both equal cost load balancing &
Unequal load balancing.
Supports Multiple Protocols IP, IPX,
Appletalk
Hello 5 sec's dead timer 15 sec's
|
Unlimited hop count
Introduces the concept of Area’s to ease
management
and control traffic
OSPF knows all the Network Topology Like GPS System knows all
the paths.
It supports only equal cost load balancing
Support the Only IP
Hello 10 sec's dead timer 40 sec's
|
Unequal load balancing means if you have two
paths going to the same destination with different Cost you can also use the
high-cost way.
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