I enable port fast and access mode on switch ports. When I reboot the linux server, it will give me duplicate ip address. There is no problem with my compaq workstation even disconnect and plug into other switch port.
If anyone come across these problem, please share with me how you solve the problem.
We use Portfast when there is a server cluster and the backup needs to come up without waiting for the learning and listening modes of the switch. So there is a single IP configured and the backup uses the same IP when the primary is down. In your case I am not sure if you have more devices connecting to the switch and which might have the same IP and hence the duplicate IP address is shown. If the IP address you are using is Private, try changing the IP of the server and checking if it gives the same message on reload. If it does not then there is another device having the same IP and so you would need to change the IP.
Use PortFast only when connecting a single end station to a Layer 2 access port. Otherwise, you might create a network loop.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...