Ruby Tech GS-2124C 3-9. DHCP Boot ,

GS-2124C User Manual

Publication date: June, 2005

Revision A1

3-9. DHCP Boot

The DHCP Boot function is used to spread the request broadcast packet into

a bigger time frame to prevent the traffic congestion d ue to broadcast packets from

many network devices which m ay seek its NMS, boot server, DHCP server and

many connections predefined when the whole building or block lose the power and

then reboot and recover. At this moment, a bunch of switch or other network device

on the LAN will try its best to f ind the server to get the services or try to set up the

predefined links, they will issue many broadcast packets in the network.

The switch supports a r andom delay time for D HCP and boot delay for each

device. This suppresses the broadcast storm while all devices are at boot ing stage

in the same time. The maximum user-defined delay tim e is 30 sec. If DHCP

Broadcasting Suppression function is enabled, the delay time is s et randomly,

ranging from 0 to 30 seconds , because the exactly delay tim e is computed by the

switch itself. The default is “Disable”.

Fig. 3-25