Which of the following routing protocols could NOT be u…

Consider the following diagram:

Which of the following routing protocols could NOT be used with this design?

A.
RIPv1

B.
RIPv2

C.
EIGRP

D.
OSPF

Explanation:
The network design displayed has subnets of a major classful network located in opposite directions from the
perspective of some of the individual routers. This configuration can be accommodated by any routing protocol
that supports Variable Length Subnet masks (VLSM) or the transfer of subnet mask information in routing
advertisements.
RIPv1 supports neither of these. RIPv1 will automatically summarize routing advertisements to their classful
network (in this case 192.168.1.0/24). This action will cause some of the routers to have routes to the same
network with different next hop addresses, which will NOT work.
EIGRP, RIPv2 and OSPF all support VLSM and can be used in the design shown in the scenario.
Objective:
Routing Fundamentals
Sub-Objective:
Compare and contrast distance vector and link-state routing protocols

Cisco > Home > Support > Technology Support > IP > IP Routed Protocols > Design > Design TechNotes >
Why Don’t IGRP and RIP v1 support VLSM?