#Ip summary route calculator update#
#Ip summary route calculator full#

Queries: queries are used to ask neighbors whether they have a path to a route which was recently lost.

#Ip summary route calculator update#

Updates: update packets are sent so the neighbor can build up its topology table. Acks are always sent using a unicast address. Hello: hellos are multicast for neighbor discovery and recovery.Īcks: Acknowledges receipt of an update. Eigrp use RTP (Reliable transport protocol) to send multicast eigrp updates and wait for unicast ACK message from each neighbor on link.

#Ip summary route calculator full#

If neighbor fail and come up again full updates are send.

Only partial updates send when one or more routes change. Once router become adjacent, they exchange routing update messageġ) Initially full updates are sent, including all updates.Ģ) Once all routes have been exchanged, update cease. There are following conditions must be met for neighborship establishment:Ģ) The source ip address of received hello is the primary subnets on that interface of router Once eigrp configure on router, it attempt to find neighbors sending Hellos on multicast address 224.0.0.10.Once routers say hello to each other they become adjacent by verifying several conditions. On nexus OS first you will need to enable eigrp feature on then you can configure as shown below N7K1(config)# feature eigrp To enable EIGRP on a router, use the router eigrp command followed by the autonomous system number of your network and then specifies the network numbers connected to the router using the network command followed by the network number.Įnter configuration commands, one per line.

Protocols support : IPv4, IPv6, IPX, and AppleTalk.

Specification : Eigrp is Cisco-proprietary.Algorithm : For Best path selection uses Diffusing Update Algorithm (DUAL).It is similar to Interior Gateway Routing Protocol (IGRP) in calculating the metric, but has many improvements, such as fast convergence, incremental updates and support for the multiple network layer protocols IP, Internetwork Packet Exchange (IPX) and AppleTalk. Enhanced Interior Gateway Routing ProtocolĮnhanced Interior Gateway Routing Protocol (EIGRP) is a Cisco proprietary enhanced distance vector routing protocol, relying on the Diffused Update Algorithm (DUAL) to calculate the shortest path to a destination.