HSRP Simulator

Your customer has asked you to come in and verify the operation of routers R1 and R2 which are configured to use HSRP. They have questions about how these two devices will perform in the event of a device failure.

Question 1

What percentage of the outgoing traffic from the 172.16.10.0/24 subnet is being forwarded through R1?

A. R1-0%
B. R1-50 %, R2-50%
C. R2-100%
D. R1-100%

Answer: D

نفذ اﻷمر show stanby على الراوتر R1 لترى حالة HSRP
ولاحظ السطر :-
state is Active
طبعا ركز على الـ group 1 ﻷن السؤال عن الشبكة 172.16.10.0/24

بما أن الراوتر R1 حالته Active لـHSRP group 1 (subnet 172.16.10.0/24) فإن التوجيه سيرسل إليه بشكل كامل بنسبة 100%

Question 2

Refer to the exhibit. If router R1 interface Etherne0/0 goes down and recovers, which of the statement regarding HSRP priority is true?

A. The interface will have the priority decremented by 40 for HSRP group 1.
B. The interface will have the priority decremented by 60 for HSRP group 1
C. The interface will have its current priority incremented by 40 for HSRP group 1
D. The interface will have its current priority incremented by 60 for HSRP group 1
E. The interface will default to the a priority of 100 for HSRP group 1

Answer: C

R1#sh run
Building configuration…

<output omitted>
!
track 1 interface Ethernet0/0 line-protocol
!
!
!
!
interface Ethernet0/0
description Link to R2
ip address 172.16.10.2 255.255.255.0
standby 1 ip 172.16.10.254
standby 1 priority 130
standby 1 preempt delay reload 180
standby 1 authentication cisco123
standby 1 mac-address 4000.0000.0010
standby 1 track 1 decrement 40
!
interface Ethernet0/1
<output omitted>

end

بما ان اﻷولية للمنفذ Ethernet0/0 تتناقص بـ40 ( priority is decreased by 40 ) لذلك عندما يعود للعمل فإن اﻷولية تزداد بنفس القيمة the priority is increased by the same value of 40

Question 3

What issue is causing Router R1 and R2 to both be displayed as the HSRP active router for group 2?

A. The HSRP group number mismatch
B. The HSRP group authentication is misconfigured
C. The HSRP Hello packets are blocked
D. The HSRP timers mismatch
E. The HSRP group priorities are different

Answer: B

HSRP Group 2 تم وضعها على الراوترين على المنفذ E1/0 لذلك نفذ الأمر show running-config على R1 و R2 وستجد الـauthentication تحت المنفذ المذكور :-

On R1:

On R2:

R2#sh run
Building configuration…

<output omitted>
!
interface Ethernet1/0
description Link to R1
ip address 172.16.20.1 255.255.255.0
standby 2 ip 172.16.20.254
standby 2 priority 130
standby 2 preempt delay reload 180
standby 2 authentication cisco123
standby 2 track 1 decrement 40
!

لاحظ الراوتر R1 لايوجد عليه authentication لـ بينما الراوترHSRP Group 2 R2 عليه وهي cisco123

Question 4

What is the virtual mac-address of HSRP group 1?

A. 0000.0c07.ac02
B. 4000.0000.0010
C. 0000.0c07.ac01
D. 4000.0000.ac01
E. 4000.0000.ac02
F. 0000.0c07.0010

Answer: B

نفذ اﻷمر show standby على الراوتر R1 لتحصل على الـ virtual MAC addres لـ HSRP group 1