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DUP MESSAGE

ray_stone
Beginner
Beginner

Hello Experts:

Our server backup team is reporting an issue of performance with Backup Server placed on V-lan 50 (192.168.1.1/24) as it's taking a backup of another server placed on other Vlan 100 (192.168.2.1/24) and please note both V-lan being managed by same Cisco l3 switch. For further troubleshooting, I asked to provide the ping and trac route output from backup server to the other server and we are recieving DUP message as you can see in the logs given below:

It's a UNIX Server.

PING testing.testing.com: (192.168.2.20): 56 data bytes
64 bytes from 192.168.2.20: icmp_seq=0 ttl=63 time=0 ms
64 bytes from 192.168.2.20: icmp_seq=0 ttl=63 time=0 ms (DUP!)
64 bytes from 192.168.2.20: icmp_seq=1 ttl=63 time=0 ms
64 bytes from 192.168.2.20: icmp_seq=1 ttl=63 time=0 ms (DUP!)

----testing.testing.com PING Statistics----
17 packets transmitted, 17 packets received, +16 duplicates, 0% packet loss
round-trip min/avg/max = 0/0/0 ms

Can anybody advice on this. there is no CRC or input errors found and connection is also ok if i check via switch for servers. what is a next step as it seems to have some issue of looping so help me for further investigation.

Thanks.

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