Operation Manual – MAC Address Table ManagementH3C S7500E Series Ethernet SwitchesChapter 1 MAC Address Table ManagementConfiguration1-41.2.3 Disabling MAC Address Learning on an Ethernet Port or Port GroupAfter enabling global MAC address learning, you may disable the function on a per-portbasis as needed.Follow these steps to disable MAC address learning on a port or port group:To do… Use the command… RemarksEnter system view system-view —Enable global MACaddress learningundo mac-addressmac-learning disableOptionalEnabled by default.EnterEthernet portviewinterface interface-typeinterface-numberEnterEthernetport viewor portgroupviewEnter portgroup viewport-group{ aggregation agg-id |manual port-group-name}RequiredUse either command toconfigure on a port orports in a group.Disable MAC addresslearning on an Ethernetport or port groupmac-addressmac-learning disableRequiredEnabled by default.Note:z When global MAC address learning is disabled, the learned MAC addresses remainvalid until they age out.z For configuration about port groups, refer to Port Correlation Configuration.1.2.4 Configuring MAC Address Aging TimerThe MAC address table on your device is available with an aging mechanism fordynamic entries to prevent its resources from being exhausted. Set the aging timerappropriately: a long aging interval may cause the MAC address table to retainoutdated entries and fail to accommodate latest network changes; a short interval mayresult in removal of valid entries and hence unnecessary broadcasts which may affectdevice performance.Follow these steps to configure the MAC address aging timer:
