Learn About Cisco Exam 642-892: CCNP Composite

  By Certification Magazine —

Multiple answer, multiple-choice

Cisco Internetwork Operating System (IOS) routers support the Virtual Router Redundancy Protocol (VRRP). Which Internet Protocol (IP) address and protocol number does VRRP use? (Choose two answers.)

A.    IP address 224.0.0.18
B.    Protocol number 112
C.    IP address 224.0.0.5
D.    Protocol number 41
E.    IP address 224.0.0.6
F.    Protocol number 6
G.    Protocol number 103
H.    IP address 224.0.0.10

Answers:
A, B

Tutorial:
VRRP uses IP multicast address 224.0.0.18 and protocol number 112.

IP multicast address 224.0.0.5 is for all Open Shortest Path First (OSPF) routers.

IP multicast address 224.0.0.6 is for all OSPF designated routers (DRs).

IP multicast address 224.0.0.10 is for Enhanced Interior Gateway Routing Protocol (EIGRP) routers.

Protocol number 41 is for Internet Protocol version 6 (IPv6).

Protocol number 6 is for Transmission Control Protocol (TCP).

Protocol number 103 is for Protocol Independent Multicast.

References:
Design Network Resiliency, Redundancy, and High Availability in Multilayer Switched Networks
Cisco Press Authorized Self-Study Guide: Building Cisco Multilayer Switched Networks (BCMSN), Fourth Edition
Chapter 12

Configuring VRRP
Cisco.com
http://www.cisco.com/en/US/docs/ios/ipapp/configuration/guide/ipapp_vrrp.html

Protocol Numbers
iana.org
http://www.iana.org/assignments/protocol-numbers

Internet Multicast Addresses
iana.org
http://www.iana.org/assignments/multicast-addresses