What variables does IGRP use to calculate its metrics by default?
A2:
By default, IGRP considers only the bandwidth and the delay of the link when calculating its metrics.
3:
What are the K values in the IGRP metric equation?
A3:
The K1 through K5 variables are constant numbers used in the IGRP metric equation. The default value of the K values are K1 = K3 = 1, K2 = K4 = K5 = 0. The network administrator can change the default K value to other numbers so that other components of the metric equation, such as load and reliability, can be used; however, such a change is highly not recommended.
4:
What command is used in IGRP to perform unequal -cost load balancing?
A4:
IGRP uses the variance command to perform unequal-cost load balancing.
5:
What is split horizon? Does IGRP support this feature?
A5:
Split horizon, supported by IGRP, is the technique used to avoid routing loops . With split horizon, the router does not advertise a route over the interface in which the route is learned from.
6:
Does IGRP support VLSM?
A6:
Because IGRP does not send subnet mask information as part of the routing update, IGRP does not support VLSM.
