ICND2 Section 2 - FHRP

Question 1

3 major FHRP protocols

Answer 1

1. HSRP
2. VRRP
3. GLBP

Question 2

What does GLBP stand for?

Answer 2

Gateway Load Balancing Protocol

Question 3

What does FHRP stand for?

Answer 3

First Hop Redundancy Protocol

Question 4

What does VRRP stand for?

Answer 4

Virtual Router Redundancy Protocol

Question 5

What does HSRP stand for?

Answer 5

Hot Standby Router Protocol

Question 6

How does HSRP implement loadbalancing?

Answer 6

By allowing different routers be the active router for different subnets.

Question 7

What’s the biggest difference between GLBP and HSRP/VRRP?

Answer 7

GLBP uses an active/active model, so traffic can be distributed between multiple routers even if the hosts are in the same subnets.

Question 8

What function does the AVG perform?

Answer 8

In GLBP, the AVG replies to all ARP requests for the virtual IP address. It will LB the responses so that the hosts end up balanced between all the routers in the group.

Question 9

What does AVG stand for?

Answer 9

Active Virtual Gateway

Question 10

How does the AVG direct hosts to utilize different routers as their gateways?

Answer 10

By providing the MAC addresses of different routers in the LB group for the virtual IP address.

Question 11

HSRP syntax to set up the VIP for a LB group

Answer 11

conf t
interface gi1/0
standby group # ip VIP

Question 12

5 basic HSRP attributes that can be configured under an interface

Answer 12

1. VIP
2. Group name
3. Priority
4. Version
5. Preempt

Question 13

HSRP syntax to set priority for a LB group

Answer 13

conf t
interface gi1/0
standby group # priority priority value

Question 14

For HSRP, what is the default priority?

Answer 14

100

Question 15

For HSRP, what is the priority range?

Answer 15

1 - 255

Question 16

For HSRP, is a higher or lower priority better?

Answer 16

Higher

Question 17

HSRP syntax to return an interface to active state after it comes back up

Answer 17

conf t
interface gi1/0
standby group # preempt

Question 18

2 commands to show detailed HSRP status

Answer 18

show standby

show standby brief

Question 19

GLBP syntax to configure the virtual IP

Answer 19

glbp group # ip vip

Question 20

GLBP syntax to configure the name of the LB group

Answer 20

glbp group # name name

Question 21

How does GLBP’s priority system differ from that of HSRP?

Answer 21

It doesn’t. Same defaults and priority range, along with the fact that higher priority is better.

Question 22

How does a router become a GLBP AVG?

Answer 22

It has the higher priority and either comes online first, or has preemption enabled.

Question 23

2 commands to show the status of GLBP

Answer 23

show glbp

show glbp brief

Question 24

What is the GLBP term for a router that is active in a LB group?

Answer 24

A forwarder