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EIGRP Packet Types

EIGRP Packet Types EIGRP (Enhanced Interior Gateway Routing Protocol) uses EIGRP messages to establish and maintain the EIGRP neighbourship. EIGRP uses five packet types for this messages. These packet types are : – Hello, – Query, – Reply, – Update, – ACK. EIGRP Packet Types Let’s check these EIGRP packet’s role in EIGRP Operation. • […]

EIGRP – Part 2 (EIGRP Tables)

Posted by gokhankosem on 02 Oct 16 - 0 Comments
EIGRP Table Types

EIGRP Tables As we talked about a little before, EIGRP (Enhanced Interior Gateway Routing Protocol) has three different tables. These EIGRP tables are: • Neighbour Table • Topology Table • Routing Table EIGRP Table Types EIGRP Neighbour Table keeps all the router that EIGRP neighbourship is established with. EIGRP Neighbour Table is established by Hello […]

EIGRP – Part 1

Posted by gokhankosem on 02 Oct 16 - 0 Comments

EIGRP (Enhanced Interior Gateway Routing Protocol) EIGRP (Enhanced Interior Gateway Routing Protocol) is a It is a hybrid routing protocol that show both distance vector and link-state routing protocol properties. EIGRP (Enhanced Interior Gateway Routing Protocol) was developed by Cisco as a Cisco proprietary protocol and it is only available on Cisco devices. EIGRP (Enhanced […]

IS-IS Protocol versus OSPF Protocol

IS-IS versus OSPF IS-IS Protocol and OSPF have some similarities and differences. Lets firstly check the similarities of these two protocol one by one: – IS-IS Protocol and OSPF are both Link-State Interior Gateway Protocols. – IS-IS Protocol and OSPF are both uses Dijkstra SPF (Shortest Path First) algorithm. – These protocols have LSDBs and […]

IS-IS Adjacency States, IS-IS Neighbourship Establishment

IS-IS Protocol Adjacency There are three types adjacency in IS-IS Protocol.These are: – Level 1 routers form L1 adjacency with L1 and L1/2 Routers – Level 2 routers form L2 adjacency with L2 and L1/2 Routers – Level 1/2 routers form L1/2 adjacency with L1/2 Routers There is no neighbourship between L1 and L2 routers. […]


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