Q41Network Assurance
Refer to the exhibit. An engineer configures VRRP and runs the show commands to verify its operation. What does the engineer confirm about VRRP group 1 from the output?
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4
A believe it is C. By ''sh run int fa0/0'' command we are not able to tell if route is in routing table or not. On router 1 is configured IP SLA which is tracking reachability to 10.10.1.1 - so if this route is unavailable, routers 1 priority decrements and it becomes Secondary, but if the route is reachable it will stay Primary because of its 110 priority.
4
It is NOT D, Why ? Because preemption is enabled by default. Which means that if R1 reboots -> R2 will become primary and when R1 reboot is finished will take the role again because of the default preemption ! -> C seems right.
B 3
Selected Answer: B
I think B is true.
C 3
Selected Answer: C
C is correct because of the tracking feature. The exhibit says nothing about route availability, so we cannot tell which routes are available or unavailable.
3
there was no output about the routing table, so you can't say yes or no
C 3
Selected Answer: C
C is the correct answer
C 2
Selected Answer: C
The answer is correct. R1 is primary if 10.10.1.1/32 is in its routing table. -> because of track 20 command
C 2
Selected Answer: C
i think that is the closest answer
2
tricky question, I hate it ...
D. is true anyway,
C. is unclear, let's say what happens if this route flaps? after that R2 will be master anyway cos no feature PREEMPTION is configured on R1... right?
C 2
Selected Answer: C
cisco_R3(config-subif)#do s runn interface Ethernet0/0.40
!
interface Ethernet0/0.40
encapsulation dot1Q 40
ip address 172.16.13.2 255.255.255.0
vrrp 10 ip 172.16.13.254
vrrp 10 track 4 decrement 20
end
cisco_R3(config-subif)#do s track 4
Track 4
IP route 5.5.5.55 255.255.255.255 reachability
Reachability is Down (no ip route)
1 change, last change 00:04:13
First-hop interface is unknown
Tracked by:
VRRP Ethernet0/0.40 10
cisco_R3(config-subif)#do s vrrp
Ethernet0/0.40 - Group 10
State is Master
Virtual IP address is 172.16.13.254
Virtual MAC address is 0000.5e00.010a
Advertisement interval is 1.000 sec
Preemption enabled <<<<<<<<<< by default, so it'll become MASTER after high priority
Priority is 80
Track object 4 state Down decrement 20
Master Router is 172.16.13.2 (local), priority is 80
Master Advertisement interval is 1.000 sec
Master Down interval is 3.609 sec
cisco_R3(config-subif)#
C 2
Selected Answer: C
R1 tracks a /32 network and removes vrrp priority if the /32 disappears.
B 1
Selected Answer: B
Answer: B
1
Sorry is D
D 1
Selected Answer: D
I believe D is correct because preemption is enabled in VRRP by default.
The answer C says " if 10.10.1.1/32 is in its routing table." if this route is statically configured it will still be there disregarding its reachability.
1
Look closely at the D answer: . If R1 reboots, R2 becomes the primary virtual router until R2 reboots. (R2 reboots !)
1
Preemption is enabled by default in VRRP, Answer "C" is correct.
1
cisco_R3(config-subif)#
*Dec 23 20:51:51.008: %TRACK-6-STATE: 4 ip route 5.5.5.55/32 reachability Down -> Up
cisco_R3(config-subif)#
cisco_R3(config-subif)#do s track 4
Track 4
IP route 5.5.5.55 255.255.255.255 reachability
Reachability is Up (BGP)
2 changes, last change 00:00:41
First-hop interface is Ethernet0/0.10
Tracked by:
VRRP Ethernet0/0.40 10
cisco_R3(config-subif)#do s vrrp
Ethernet0/0.40 - Group 10
State is Master
Virtual IP address is 172.16.13.254
Virtual MAC address is 0000.5e00.010a
Advertisement interval is 1.000 sec
Preemption enabled
Priority is 100
Track object 4 state Up decrement 20
Master Router is 172.16.13.2 (local), priority is 100
Master Advertisement interval is 1.000 sec
Master Down interval is 3.609 sec
1
cisco_R3(config-subif)#
cisco_R3(config-subif)#do s ip ro 5.5.5.55
Routing entry for 5.5.5.55/32
Known via "bgp 3", distance 20, metric 0
Tag 5, type external
Last update from 192.168.255.55 00:01:21 ago
Routing Descriptor Blocks:
* 192.168.255.55, from 192.168.255.55, 00:01:21 ago
Route metric is 0, traffic share count is 1
AS Hops 4
Route tag 5
MPLS label: none
cisco_R3(config-subif)#
1
Not D; VRRP has preempt on by default, so R1 will take back over as primary when it can.
Answer is C
C 1
Selected Answer: C
Option A is wrong.
The authentication type is cleartext; the 'text' keyword is being used.
We can use md5 authentication by running the 'authentication md5' command.
Option B is wrong, and it is irrelevant to the context of this question.
We need to use the 'show ip route' command to display R2's routing table and confirm.
Option C is correct.
We will track reachability to IP address '10.10.1.1' in its routing table and if it's not reachable by R1, R1's priority will drop by 20. This will set R1's priority to '90', making it lower than R2's default priority (100,) and R2 becomes the active router.
Option D is wrong
If R1 reboots, R2 becomes the primary virtual router until R1 comes back. (Tested in PT)