Archive for the ‘Routing’ Category

Distance Vector Routing Protocols

The meaning of Distance Vector:
A router using distance vector routing protocols knows 2 things:
Distance to final destination.
Vector, or direction, traffic should be directed.

RIP uses hop count as the metric for path selection.
If hop count for a network is greater then 15, RIP cannot supply a route to that network.
IGRP/EIGRP use Bandwidth, delay, load and reliability for path selection.
EIGRP can perform unequal cost load balancing.
EIGRP uses Diffusing Update Algorithm (DUAL) to calculate the shortest path.
EIGRP only sends updates when there is a change in the topology.

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Tags: 802.1q, guides, router, cisco, switch, interface

Dynamic Routing Protocols:

Dynamic routing helps the admin overcome the time-consuming process of configuring and maintaining static routes.
Routing protocols have been used since the early 80s.
Routing algorithms have been in use since 1969.
Some function(s) of Dynamic Routing Protocols:
Dynamically share information between routers.
Automatically update routing table when topology changes.
Determine best path to a destination.

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Tags: vtp, vlan, switch, study, router, guides