Dell PowerConnect 6248 User's Guide - Page 32

IP Interface Configuration IP interface configuration includes the ability to configure the bandwidth, Destination Unreachable messages, and ICMP Redirect messages. IP Helper Provides the ability to relay various protocols to servers on a different subnet. VRRP Route Interface Tracking Extends the capability of the Virtual Router Redundancy Protocol (VRRP) to allow tracking of specific route/interface IP state within the router that can alter the priority level of a virtual router for a VRRP group. The exception to this is, if that VRRP group is the IP address owner, its priority is fixed at 255 and can not be reduced through tracking process. MAC Address Supported Features MAC Address Support The switch supports up to 32K Media Access Control (MAC) addresses and reserves two MAC addresses for system use. Self-Learning MAC Addresses The switch enables MAC addresses to be automatically learned from incoming packets. Automatic Aging for MAC Addresses MAC addresses that have not seen any traffic for a given period are aged out, which prevents the bridging table from overflowing. For information about configuring the MAC Address age-out period, see "Dynamic Address Table." Static MAC Entries User-defined MAC entries are stored in the Bridging Table with the self-learned addresses. For information about configuring the static MAC addresses, see "Static Address Table." VLAN-Aware MAC-based Switching Packets arriving from an unknown source address are sent to the CPU and added to the Hardware Table. Future packets addressed to or from this address are more efficiently forwarded. 32 Introduction