Dell PowerConnect 5548 User Guide - Page 31

DHCP Server Dynamic Host Configuration Protocol (DHCP) provides a means of passing configuration information (including the IP address of a TFTP server and a configuration file name) to hosts on a TCP/IP network. The switch can serve as a DHCP server or client. For more information on the device serving as a DHCP server, see "DHCP Server" on page 290. For more information on the device serving as a DHCP client, see "DHCP IPv4 Interface" on page 207. Protected Ports The Protected Ports feature provides Layer 2 isolation between interfaces (Ethernet ports and LAGs) that share the same Broadcast domain (VLAN) with other interfaces. For more information, see "Protected Ports" on page 388. iSCSI Optimization iSCSI optimization provides the iSCSI flows with specific priority over other network traffic. In addition, the feature provides monitoring of iSCSI sessions. For more information, see "iSCSI Optimization" on page 584. Proprietary Protocol Filtering This feature enables user control over the filtering of packets with proprietary protocols such as CDP, VTP, DTP, UDLD, PaGP, and SSTP. The user can select any combination of the protocols to be filtered, for example: CDP and VTP and UDLD. For more information, see "Network Security" on page 92. DHCP Relay and Option 82 A DHCP relay agent detects DHCP Broadcasts from DHCP clients and relays them to DHCP servers that may reside on different subnets. Dell PowerConnect 55xx Systems User Guide 31