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RIP
RIP is a distance vector routing protocol that uses hop count as its metric. The maximum hop count is
15 so 16 hops is deemed unreachable. RIP updates are broadcast every 30 seconds by default. RIP is
enabled by typing:
Router(config)# router rip
This puts you in router configuration mode. You then have to associate attached networks with the RIP
process. You only associate directly attached networks.
Router(config-router)# network <network id>*Keypoints:The "network" command is used in router configuration mode to enable directly connected net-works to be used by RIP.RIP is capable of load sharing over multiple paths and it broadcasts updates every 30 seconds.Know that the "router rip" command is the first command you issue when you are getting ready toconfigure RIP.Know that the "router rip" command is issued in the Router(config)# mode.Know that in order to enable RIP you must 1) specify the routing protocol and 2) specify directlyconnected networks.IGRP
IGRP is a distance vector routing protocol designed by Cisco. The maximum hop count is 255 and it
uses a combination of variables to determine a composite metric.
·
Bandwidth
·
Delay
·
Load
·
Reliability
·
Maximum Transmission Unit (MTU)
IGRP is enabled by typing:
Router# router igrp 12
Where 12 is the autonomous system number. You then have to associate directly connected networks
in the same way as you did with RIP.
network <network id>*Keypoints:Enable IGRP routing by using the "router igrp <autonomous system #>" command.IGRP supports up to 4 paths by default, but can support up to 8.In any IGRP route path, the next hop router must be closer to the destination router than to the lo-cal router.IGRP broadcasts routing updates every 90 seconds.