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I written above in the Describe Interview Process part. But run out of space. The second question of the third stage of the interview, being based on VPN. This one was tricky. You are shown a topology of two sites connected through the internet. And a VPN is created from a router of one site, connected to a VPN Gateway of another site (but this is connected to the switch, not on router). You are told to troubleshoot this. This is where I got confused. I just made sure the IKE1 was set up correctly, the ISAKMP SA's were all matching, and then the pre-shared key matched. Then the IPSec SA's were the same. Then attached it to the VPN tunnel. Also, ensured the tunnel interface was configured correctly, where the destination of the tunnel was the public facing address of the other end, and the tunnel source was a loopback address, and ensured both ends of the tunnel interface were on the same subnet. Then made sure there was a static route (on each site) stating to get to that other site, the next hop would be the tunnel interface IP address. And so on. I got a little confused here. I think this is why I failed. Overall the interview was rigorous and it being 5 steps is over the top in my opinion. I failed on the third. Those that are applying, re-read your CCNA's thoroughly and make sure you understand most the concepts, except for OSPF, as I'm surprised they didn't ask me any of that, or even ACL.
avatar

Network Support Engineer

Interviewed at Meraki

3.8★
Aug 9, 2021

I written above in the Describe Interview Process part. But run out of space. The second question of the third stage of the interview, being based on VPN. This one was tricky. You are shown a topology of two sites connected through the internet. And a VPN is created from a router of one site, connected to a VPN Gateway of another site (but this is connected to the switch, not on router). You are told to troubleshoot this. This is where I got confused. I just made sure the IKE1 was set up correctly, the ISAKMP SA's were all matching, and then the pre-shared key matched. Then the IPSec SA's were the same. Then attached it to the VPN tunnel. Also, ensured the tunnel interface was configured correctly, where the destination of the tunnel was the public facing address of the other end, and the tunnel source was a loopback address, and ensured both ends of the tunnel interface were on the same subnet. Then made sure there was a static route (on each site) stating to get to that other site, the next hop would be the tunnel interface IP address. And so on. I got a little confused here. I think this is why I failed. Overall the interview was rigorous and it being 5 steps is over the top in my opinion. I failed on the third. Those that are applying, re-read your CCNA's thoroughly and make sure you understand most the concepts, except for OSPF, as I'm surprised they didn't ask me any of that, or even ACL.

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