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HSRP Sim

March 22nd, 2018 in Simlets Go to comments

Special thanks to Yahya who created this HSRP simlet with EVE-NG emulator and you can download it here.

Question 1

Explanation

Check the configuration of R1 with the “show running-config” command:

R1_show_run_track.jpg

R1 connects to R5 via E0/1 interface but R1 is tracking E0/0 which connects to R2 -> when the link between R1 & R5 fails the HSRP priority of R1 is still the same. To correct this problem we have to change the tracking interface to E0/1.

Question 2

Explanation

Check the link between R1 & R2 where HSRP group 2 is running (interface E1/0)

R1_show_run_access_list.jpg

As we see R1 is using access-list 102 to filter traffic coming to interface E1/0 (inbound direction). Continue checking the access-list 102 of R1:

R1_show_run_access_list2.jpg

R1 is blocking any traffic send to 224.0.0.102. Notice that in the syntax of an access-list, the source address is always defined before the destination address. “224.0.0.102” is the muticast address which HSRP version 2 uses to send Hello packets to (instead of 224.0.0.2 of HSRP version 1). Therefore all HSRP sent from neighbor (R2 in this case) to R1 is dropped. R1 keeps sending HSRP Hello packets and think it is the active HSRP router.

Question 3

Explanation

Checking what is preventing the two networks 172.16.10.0/24 & 172.16.20.0/24 from learning on R4.

R4_show_run_distribute_list.jpg

There is a distribute-list applied on R4. Notice that a distribute-list is often used to control which routing updates should be sent or received on a router. So we should check what this distribute-list is used for. This distribute-list is based on access-list 1 so we will continue checking this access-list:

R4_show_run_access_list.jpg

This access-list explicitly blocks the two networks 172.16.10.0/24 & 172.16.20.0/24 from populating into R4 routing table.

Question 4

Explanation

Check the routing table of R4 with the “show ip route” command:

R5_show_ip_route.jpg

We see that there is no route is learned from R4.

Check R4 and R5 with the “show ip interface brief” command, we notice that the interface E0/0 of R4 (which is connected to R5) and interface E0/0 of R5 (which is connected to R4) are running DHCP but it does not have any IP address.

R4_show_ip_int_brief.jpg

-> Therefore this is the issue.

Note: Although the tracking on R2 is not correct too but there is no question about it. Maybe it is a trick to confuse candidates in the exam.

Comments (12) Comments
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  1. robot
    September 24th, 2019

    EVE LAB shared above isn’t continuity the configuration in the devices is there is a way to have it i see only the digram

  2. hiku
    October 13th, 2019

    in previous simlet dumps issue number 4 ‘s answer was an issue with ospf but here the answer is dhcp which one is correct?

  3. Wiki
    October 30th, 2019

    Hi Networktut,

    I am a premium member and when I do the show run for HSRP sim on R2, it shows that it’s tracking Ethernet 1/0 (which is connected to R1) rather than interface Eth 0/1 (which is connected to R4). I think for correct configuration, it should be tracking the link to R4. Thanks

  4. networktut
    October 31st, 2019

    @Wiki: Although the tracking on R2 is not correct but there is no question about it. Maybe it is a trick to confuse candidates in the exam.

  5. Anonymous
    November 4th, 2019

    Hi all,

    I’ve downloaded the hsrp simlet with eve ng, but can someone tell me where can i find the running configs of each routers.
    If i open the lab in eve ng the routers have only base configs?

  6. Anonymous
    November 11th, 2019

    when running the lab in eve-ng, it just shows the basic configs, even the host name is Switch, can anyone suggest on it please.

  7. Anonymous
    November 12th, 2019

    Hi, where are the questions for the HSRP sim? Please help

  8. Nickname
    November 13th, 2019
  9. fm
    November 13th, 2019

    Hello everyone,

    Could anyone share experience regarding the last question in HSRP SIM. Got a bit confused between below answers.

    A. HSRP issue between R5 and R4
    C. There is a DHCP issue between R5 and R4

    As described in this pdf – http://www.networktut.com/multiple-choice-questions, both routers was configured with such netowork statement under the OSPF process – 0.0.0.0 0.0.0.0 area 0, meaning that there should not be problem in OSPF. So in this case we only have one option to select and this is C.

    Looking forward to see you opinion about this case.

  10. ZiliMili
    November 15th, 2019

    Thanks Nickname.

  11. Jackie
    November 17th, 2019

    @Nickname do you know how can I find questions for all tickets in this Tshoot exam? I am searching here on 9tut but cannot seem to get anywhere?

  12. Tshoot123
    November 22nd, 2019

    Do we have to make changes on the HSRP sim like the BGP ? Or is it
    Multiple choice like the trouble tickets .

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