SRX

We have a juniper router onsite and when pinging a cctv at site we are seeing below:

execute ping 10.112.34.20
PING 10.112.34.20 (10.112.34.20): 56 data bytes
64 bytes from 10.112.34.20: icmp_seq=0 ttl=61 time=1.6 ms
64 bytes from 10.112.34.20: icmp_seq=0 ttl=61 time=1.6 ms (DUP!)
64 bytes from 10.112.34.20: icmp_seq=1 ttl=61 time=1.6 ms
64 bytes from 10.112.34.20: icmp_seq=1 ttl=61 time=1.7 ms (DUP!)
64 bytes from 10.112.34.20: icmp_seq=2 ttl=61 time=1.6 ms
64 bytes from 10.112.34.20: icmp_seq=2 ttl=61 time=1.6 ms (DUP!)

Quite confused with this ping response as we don't have any duplicate IPs etc so unsure why juniper is throwing this?

Hello

There could be a number of reasons:

https://forums.juniper.net/t5/SRX-Services-Gateway/DUP-ping-response/td-p/164474

https://networkengineering.stackexchange.com/questions/24734/duplicate-packet-ping-reply-in-network-configuration

https://forums.freebsd.org/threads/dup-in-ping-replies-to-or-from-server.36371/

BR,
Andrei

Accept as Solution = cool !
Accept as Solution+Kudo = You are a Star !

If there is only one device with that ip address then you likely have a layer 2 loop in this broadcast domain.