Scenario
You have noticed that it takes ages for client devices – like PCs, VOIP phones, even Xboxs – to get an IP address via DHCP. Sometimes an IP address is not given at all.
Here is how to speed up the DHCP process on Cisco switches and routers:
Solution
Simply select the range of ports you want to affect, then enable portfast:
Switch# conf t Switch(config)# interface range fa0/3 - 48 Switch(config-if-range)# spanning-tree portfast
Hi,
Technically you’re not speeding up DHCP here, you’re making a shortcut in spanning-tree. Without portfast, even a host with a statically assigned IP address would be faced with a delay before being able to join the network.
Regards,
Mike.