UNIT 5 ASSIGNMENT 1
UNIT 5 ASSIGNMENT 1
EIGRP versus OSPF
Jason Houlden
Table of a side by side comparison:
EIGRP
OSPF
EIGRP forms adjacencies and exchanges routing updates with neighbors
OSPF forms adjacencies with DR/BDROSPF can be more efficient than EIGRP for large meshed networks
EIGRP uses metric based on bandwidth and delay
OSPF uses interface cost (inversely proportional to bandwidth)EIGRP may provide more flexibility in selecting best path
EIGRP by default limits usage to at most 50% of link bandwidth in worst case
OSPF uses 100% of link bandwidth when required EIGRP may be better suited for lower bandwidth WAN applications
EIGRP provides feature velocity, but is Cisco-proprietary
OSPF is an Internet RFC standard
EIGRP sends hop-by-hop queries only when Feasible Successor cannot be found
OSPF regularly syncs LSA database and floods network with topology change EIGRP can be more efficient by minimizing routing information exchanged
EIGRP is a conceptually simpler routing protocol
OSPF’s rules for different types of areas and LSAs can be conceptually more difficult to understand Some customers believe EIGRP is easier to implement, but both are feature-rich and scalable
EIGRP supports automatic summarization
OSPF’s requires manual summarization Care is needed in either case to ensure proper summarization!
EIGRP supports both equal and unequal cost load sharing
OSPF only supports equal cost load sharing
Historical Information of OSPF:
In the early days of TCP/IP, the RIP became the standard protocol for routing within Internet Systems because of ease of use. RIP had two big things going for it: it was simple and easy to use, and it was included in the popular Berkeley Standard Distribution (BSD) of UNIX starting in 1982. Most organizations using TCP/IP started out with relatively small networks, and were able to use RIP with some degree of success.
However, RIP had some serious issues as the networks began to grow larger. Many of these problems are due to it being a
EIGRP versus OSPF
Jason Houlden
Table of a side by side comparison:
EIGRP
OSPF
EIGRP forms adjacencies and exchanges routing updates with neighbors
OSPF forms adjacencies with DR/BDROSPF can be more efficient than EIGRP for large meshed networks
EIGRP uses metric based on bandwidth and delay
OSPF uses interface cost (inversely proportional to bandwidth)EIGRP may provide more flexibility in selecting best path
EIGRP by default limits usage to at most 50% of link bandwidth in worst case
OSPF uses 100% of link bandwidth when required EIGRP may be better suited for lower bandwidth WAN applications
EIGRP provides feature velocity, but is Cisco-proprietary
OSPF is an Internet RFC standard
EIGRP sends hop-by-hop queries only when Feasible Successor cannot be found
OSPF regularly syncs LSA database and floods network with topology change EIGRP can be more efficient by minimizing routing information exchanged
EIGRP is a conceptually simpler routing protocol
OSPF’s rules for different types of areas and LSAs can be conceptually more difficult to understand Some customers believe EIGRP is easier to implement, but both are feature-rich and scalable
EIGRP supports automatic summarization
OSPF’s requires manual summarization Care is needed in either case to ensure proper summarization!
EIGRP supports both equal and unequal cost load sharing
OSPF only supports equal cost load sharing
Historical Information of OSPF:
In the early days of TCP/IP, the RIP became the standard protocol for routing within Internet Systems because of ease of use. RIP had two big things going for it: it was simple and easy to use, and it was included in the popular Berkeley Standard Distribution (BSD) of UNIX starting in 1982. Most organizations using TCP/IP started out with relatively small networks, and were able to use RIP with some degree of success.
However, RIP had some serious issues as the networks began to grow larger. Many of these problems are due to it being a
References: https://smbitsolutions.wordpress.com/2011/06/14/eigrp-or-ospf-which-one-should-i-use/ http://ericleahy.com/index.php/eigrp-part-one/ http://keepingitclassless.net/2013/03/a-contest-of-protocols-eigrp-or-ospf/