The competition is officially closed so no prizes will be awarded for the solution but feel free to test your skills on this tie-breaker challenge.
Challenge Author: Alexander Arseniev
Country Flag: Antarctica
Type: Enterprise Difficulty: High (2 points)
With just one set configuration command at the router of your choice, ensure that when you ping from R1 to the ge-‐0/0/2 interface of R3, the ICMP echo reply packets are mirrored towards H.
For this challenge, you need to start the topology called: “ANTARCTICA – Port Mirroring”.
Run ping from R1 towards the ge-‐0/0/2 interface of R3:
juniper@R1> ping 126.96.36.199
Initially, it fails with message “No route to host”. You need to fix it so that:
-‐ The ping command succeeds.
-‐ R3 actually answers with ICMP echo replies.
-‐ R1 mirrors the echo reply packets towards H
Once the issue is fixed, you should see the ICMP reply packets arriving at H:
juniper@SNIFFER> show firewall log Log :
Time Filter Action Interface Protocol Src Addr Dest Addr 03:51:06 pfe A ge-‐0/0/1.0 ICMP 188.8.131.52 198.18.1.1
03:51:06 pfe A ge-‐0/0/1.0 ICMP 184.108.40.206 198.18.1.1
03:51:05 pfe A ge-‐0/0/1.0 ICMP 220.127.116.11 198.18.1.1
You need to accomplish the task above with just one set command on one router (you need to figure out which one):
set <command1> commit and-‐quit
/* You may need to wait for some time after commit, */
/* from a few seconds up to 2 or 3 minutes */
Make sure that you log in with username juniper, and respect its privilege limitations (some parts of the configuration are neither accessible nor visible).
You must meet the following conditions:
-‐ The solution must be permanent. Once it is fixed, it remains fixed with no user intervention for an unlimited amount of time.
-‐ Any configuration added/removed on SNIFFER does not count towards the solution.
-‐ You are not allowed to use wildcards, configuration groups, or op/event/commit-‐ scripts.
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