Follow these steps to set the maximum number of MAC addresses a port can learn:To do… Use the command… RemarksEnter system view system-view —Enter Ethernet port view interface interface-typeinterface-number —Set the maximum number ofMAC addresses the port canlearnmac-address max-mac-countcountRequiredBy default, the number of theMAC addresses a port canlearn is not limited.If you have configured the maximum number of MAC addresses that a port can learn, you cannotenable the MAC address authentication or port security functions on the port, and vice versa.Enabling Destination MAC Address Triggered UpdateBy default, a switch updates its MAC address entries based on the source MAC addresses of packets.However, this may cause the switch to perform unnecessary broadcasts in some applications. Forexample, when a port aggregation group is used in an XRN fabric for communications, MAC addressentries of some ports in the aggregation group may not be updated in time, resulting in unnecessarybroadcasts.The destination MAC address triggered update function solves the above problem by allowing theswitch to update its MAC address entries according to destination MAC addresses in addition to sourceMAC addresses. This function improves the availability of the MAC address table.Follow these steps to enable destination MAC address triggered update:To do… Use the command… RemarksEnter system view system-view —Enable destination MACaddress triggered updatemac-address agingdestination-hit enableRequiredDisabled by defaultDisplaying MAC Address Table InformationTo do… Use the command… RemarksDisplay information about the MACaddress tabledisplay mac-address[ display-option ]Display the aging time of the dynamicMAC address entries in the MAC addresstabledisplay mac-address aging-timeDisplay the configured start port MACaddress display port-macAvailable in anyview18-7
