Motorola WS5100 manual Dhcp Server Settings, Configuring the Switch Dhcp Server

Switch Services 5-3

Layer 3 Mobility	Displays whether Layer 3 Mobility is currently enabled or disabled for the switch.
	Layer 3 mobility is a mechanism which enables a MU to maintain the same Layer 3
	address while roaming throughout a multi-VLAN network. This enables transparent
	routing of IP datagrams to MUs during their movement, so data sessions can be
	initiated while they roam (in for voice applications in particular). Layer 3 mobility
	enables TCP/UDP sessions to be maintained in spite of roaming among different IP
	subnets. For more information on configuring Layer 3 Mobility, see
	Layer 3 Mobility on page 5-35.
GRE Tunnels	Displays the number of GRE tunnels currently configured on the switch. Tunneling involves
	encapsulating a packet that supports one protocol within another packet, which may
	run on the same protocol or on a different protocol. It is generally used to support
	evolving networks, its capacity and security requirements. Generic Routing
	Encapsulation (GRE) is one of the many commonly used protocols for IP tunneling.
	For information on configuring GRE tunneling, see
	Configuring GRE Tunnels on page 5-41.
Self Healing	Displays whether Self Healing is currently enabled on the switch. Self healing enables
	radios to take action when one or more radios fail. To enable the feature the user
	must specify radio neighbors that would self heal if either one goes down. The
	neighbor radios do not have to be of the same type. Therefore, an 11bg radio can be
	the neighbor of a 11a radio and either of them can self heal when one of them fails.
	For information on configuring self healing, see Configuring Self Healing on page 5-46.

5.2 DHCP Server Settings

The DHCP Server Settings section contains the following activities:

•Configuring the Switch DHCP Server

•Viewing the Attributes of Existing Host Pools

•Configuring Excluded IP Address Information

•Configuring DHCP Server Relay Information

•Viewing DHCP Server Status

5.2.1Configuring the Switch DHCP Server

The switch contains an internal Dynamic Host Configuration Protocol (DHCP) Server. DHCP can provide the dynamic assignment of the IP addresses automatically. DHCP is a protocol that includes mechanisms for IP address allocation and delivery of host-specific configuration parameters from a DHCP server to a host. Some of these parameters are IP address, network mask, and gateway.

When a DHCP server allocates an address for a client, the client is assigned a lease, which expires after an amount of time chosen by the administrator. Before leases expire, the clients to which leases are assigned