CLI Reference Guide

Configuring VLANs 201
Configuring the MSS DHCP Server
MSS has a DHCP server that the switch uses to allocate IP addresses to
the following. DHCP service for these items is enabled by default.
 Directly connected MAPs
 Host connected to a new (unconfigured) WXR100 or WX1200, to
configure the switch using the Web Quick Start
Optionally, you can configure the DHCP server to also provide IP
addresses to Distributed MPs and to clients.
Use of the MSS DHCP server to allocate client addresses is intended for
temporary, demonstration deployments and not for production
networks. 3Com recommends that you do not use the MSS DHCP server
to allocate client addresses in a production network.
To enable the MSS DHCP server on the VLAN:
1 In the Create VLAN wizard, click DHCP Server. The DHCP Server page
appears.
2 Select Enabled.
3 To change the range of addresses available to the DHCP server, edit the
addresses in the Start IP Addresses and Stop IP Addresses boxes.
By default, all addresses except the host address of the VLAN, the
network broadcast address, and the subnet broadcast address are
included in the range. If you specify the range, the start address must be
lower than the stop address, and all addresses must be in the same
subnet. The IP interface of the VLAN must be within the same subnet but
is not required to be within the range.
4 To close the wizard and save the changes, click Finish.
Configuring STP Fast Convergence Features
The standard STP timers delay traffic forwarding briefly after a topology
change. The time a port takes to change from the listening state to the
learning state or from the learning state to the forwarding state is called
the forwarding delay. In some configurations, this delay is unnecessary.
The WX switch provides the following fast convergence features to
bypass the forwarding delay:
 Backbone fast convergence
 Uplink fast convergence