3com WXR100 3CRWXR10095A User Manual

MSS has a DHCP server that the switch uses to allocate IP addresses to 
the following:

„

Directly connected MAPs

„

Host connected to a new (unconfigured) WXR100, to configure the 
switch using the Web Quick Start 

DHCP service for these items is enabled by default. 

Optionally, you can configure the DHCP server to also provide IP 
addresses to Distributed MAPs and to clients. 

Configuration is supported on an individual VLAN basis. When you 
configure the DHCP server on a VLAN, the server can serve addresses only 
from the subnet that contains the host address assigned to the VLAN. By 
default, the VLAN can serve any unused address in the subnet except the 
VLAN’s host address and the network and broadcast addresses. You can 
specify the address range. 

You can configure the DHCP server on more than one VLAN. You can 
configure a DHCP client and DHCP server on the same VLAN, but only the 
client or the server can be enabled. The DHCP client and DHCP server 
cannot both be enabled on the same VLAN at the same time.

The MSS DHCP server is implemented according to “RFC 2131: Dynamic 
Host Configuration Protocol” and “RFC 2132: DHCP Options and BOOTP 
Vendor Extensions”, with the following exceptions:

„

If the switch is powered down or restarted, MSS does not retain 
address allocations or lease times.

„

The MSS DHCP server will not operate properly when another DHCP 
server is present on the same subnet.