H DHCPThis appendix contains the following sections:n How Traffix Manager Monitors DHCP Devicesn What Effect Do DHCP Devices Have On The Map?How TraffixManager MonitorsDHCP DevicesTraffix™ Manager normally uses the Network Layer Address (for example,IP address, IPX address) as the unique way to identify objects on yournetwork. However, the IP address of devices managed using the DynamicHost Control Protocol (DHCP) can change, and therefore this is anunreliable method of identification for these devices.The only certain way of identifying such devices in the Map is to use theMAC address of the device. You can use the DHCP configuration file tospecify which devices you want Traffix Manager to identify using thismethod. You can open this file by clicking DHCP Setup in the TraffixControl Panel.What Effect DoDHCP Devices HaveOn The Map?If a device which is managed using DHCP is discovered on your network,it may appear on the Traffix Manager Map as a normal device until TraffixManager realizes it is a DHCP device.A DHCP device requests an IP address from the DHCP server. DHCP is adynamic protocol, and the DHCP server can provide a different IP addressfor the same device each time this request is made. If, according to yourlocal DHCP policy, the IP address of a device changes, the device willappear exactly the same in the Map, except that its IP address willchange.If the old IP address of a device is assigned to a new MAC address, a newdevice is created in the Map. This new device will have the old IP addressand the new MAC address attribute assigned to it. The original device
