Dhcp Boot - SignaMax 065-7840 User Manual

Signamax 065-7840 24-Port 10/100/1000BaseT/TX Managed Switch

3-9. DHCP Boot

The DHCP Boot function is used to spread the request broadcast packet into
a longer time frame to prevent the traffic congestion due to broadcast packets from
many network devices which may seek its NMS, boot server, DHCP server and
many predefined connections when the whole building or block loses electrical
power and then attempts to reboot and recover. When an event like that occurs, a
number of switches or other network devices on the LAN will try their best to find the
server to get the services they require or try to set up the predefined links. In doing
so, they will issue many broadcast packets in the network.
The switch supports a random delay time for DHCP and boot delay for each
device. This suppresses the broadcast storm while all devices are at the booting
stage at the same time. The maximum user-defined delay time is 30 sec. If the
DHCP Broadcasting Suppression function is enabled, the delay time is set randomly,
ranging from 0 to 30 seconds, because the exact delay time is computed by the
switch itself. The default is "Disable".
Fig. 3-24
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