Dell PowerConnect W-Airwave W-Airwave 7.2 Configuration Guide - Page 150

Table 75 Advanced Services > IP Mobility, Add/Edit Field Descriptions (Continued) Field Default Description Proxy DHCP Maximum Number of BOOTP 25 Packets Per Transaction (0-65534) Maximum Time Allowed for a 60 DHCP Transaction to Complete (10-600 sec) Proxy DHCP Session Hold Time 5 after Completion (dangerous) (1-600 sec) Terminate Proxy DHCP on No Aggressive Transaction ID Change (dangerous) Performs Proxy-DHCP for No BOOTP Packets Without DHCP-options (dangerous) Define the maximum number of BOOTP packets that can be supported for a given transaction in proxy DHCP. All BOOTP packets are at least 300 bytes in size, by specification. BOOTP packets are used when a host configures itself dynamically at boot time. Set the maximum allowable time for proxy DHCP transactions to complete. Specify the length of time a proxy DHCP session is to be supported after DHCP processes are complete. Longer times are not considered advisable. If proxy DHCP is subject aggressive transaction ID change, this setting terminates upon detection. Use this setting to support Proxy DHCP for BOOTP packets, but without DHCP options. Revocation Retransmit Interval (100-10000 1000 msec) Set the interval in milliseconds in which to retransmit in revocation. A home agent or foreign agent can send a registration revocation message, which revokes registration service for the mobile client. For example, when a mobile client roams from one foreign agent to another, the home agent can send a registration revocation message to the first foreign agent so that the foreign agent can free any resources held for the client. Maximum Number of Request 3 Retransmits (0-5) Use this setting to define how many retransmits are supported before revocation is enacted. Select Add to create this IP Mobility Profile, or click Save to retain changes to an edited IP Mobility Profile. Advanced Services > IP Mobility > Mobility Domain You configure mobility domains on master controllers. All local controllers managed by the master controller share the list of mobility domains configured on the master. Mobility is disabled by default and must be explicitly enabled on all controllers that will support client mobility. Disabling mobility does not delete any mobilityrelated configuration. The home agent table (HAT) maps a user VLAN IP subnet to potential home agent addresses. The mobility feature uses the HAT table to locate a potential home agent for each mobile client, and then uses this information to perform home agent discovery. To configure a mobility domain, you must assign a home agent address to at least one controller with direct access to the user VLAN IP subnet. (Some network topologies may require multiple home agents.) Dell PowerConnect W recommends you configure the switch IP address to match the AP's local controller or define the Virtual Router Redundancy Protocol (VRRP) IP address to match the VRRP IP used for controller redundancy. Do not configure both a switch IP address and a VRRP IP address as a home agent address, or multiple home agent discoveries may be sent to the controller. Configure the HAT with a list of every subnetwork, mask, VLAN ID, VRRP IP, and home agent IP address in the mobility domain. Include an entry for every home agent and user VLAN to which an IP subnetwork maps. If there is more than one controller in the mobility domain providing service for the same user VLAN, you must configure 150 | Dell PowerConnect W Configuration Reference Dell PowerConnect W AirWave 7.2 | Configuration Guide