3Com WXR100 3CRWXR10095A, WX4400 3CRWX440095A manual Distributed MAP Network Requirements

180CHAPTER 10: CONFIGURING MAP ACCESS POINTS

Similar to ports configured for directly connected MAPs, distributed MAP configurations are numbered and can reference a particular MAP. These numbered configurations do not, however, reference any physical port.

Distributed MAP Network Requirements

Because Distributed MAPs are not directly attached to a WX, they require additional support from the network in order to function. Information on the booting and operation sequence for Distributed MAPs is covered in the section “Boot Process for Distributed MAPs” on page 189.

„Power — PoE must be provided on one of the Ethernet connections to the MAP. Be sure to use a PoE injection device that has been tested by 3Com. (Contact 3Com for information.)

„DHCP — By default, a Distributed MAP uses TCP/IP for communication, and relies on DHCP to obtain IP parameters. Therefore, DHCP services must be available on the subnet that the MAP is connected to. DHCP must provide the following parameters to the MAP:

„IP address

„Domain name

„DNS server address

„Default router address

„Static IP configuration—If DHCP is not available in the network, a Distributed MAP can be configured with static IP information that specifies its IP address, as well as the WX switch it uses as its boot device.

„DNS — If the intermediate network between the WX switch and Distributed MAP includes one or more IP routers, create a 3COMWX.mynetwork.com entry on the DNS server. The entry needs to map this name to the system IP address of the switch. If the subnet contains more than one WX in the same Mobility Domain, you can use the system IP address of any of the WX switches. (For redundancy, you can create more than one DNS entry, and map each entry to a different WX switch in the subnet.)

The DNS entry allows the MAP to communicate with a WX that is not on the MAP subnet. If the MAP is unable to locate a WX on the subnet, the MAP sends DNS requests to 3COMWX, where the DNS suffix for mynetwork.com is learned through DHCP.