Duplex mismatch are common cause of drop packets when pinging a host. Although there are documentations that vendors (including Cisco) recommends leaving the settings to Auto/Auto, experience dictates to harcode the speed and duplex to say 100Mbps/FullDuplex specially for the following: Router, Firewall, Switch, and Server. To find the segment that causing the packet drops, you can execute "show interface interface_name_number" and look for drop packet, errors, and collissions.
Other cause of drop packets;
- Faulty cabling
- Faulty NIC
- Routing loop
- Network device has high CPU/MEM util (probably under DDOS attack)
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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