© Copyright Lenovo 2017 Chapter 4: Configuration Commands 401[no] dscp markingEnables or disables DSCP re‐marking on a port.Command mode: Interface port/Interface portchannel[no] flood blockingEnables or disables port Flood Blocking. When enabled, unicast and multicastpackets with unknown destination MAC addresses are blocked from the port.Command mode: Interface port/Interface portchannelip dhcp snooping limit rate <1‐2048>Configures the maximum number of DHCP packets allowed per second.Command mode: Interface portno ip dhcp snooping limit rateUnlimits the maximum number of DHCP packets allowed per second.Command mode: Interface port[no] ip dhcp snooping trustConfigures this port as a trusted port for DHCP packets from the server.Command mode: Interface port[no] learningEnables or disables FDB learning on the port.Command mode: Interface port/Interface portchannel[no] mac address table mac notificationEnables or disables MAC Address Notification. With MAC AddressNotification enabled, the switch generates a syslog message when a MACaddress is added or removed from the MAC address table.Command mode: Interface port/Interface portchannelport channel min links <1‐32>Set the minimum number of links for the LACP LAG to which this portbelongs. If the specified minimum number of ports are not available, the LinkAggregation Group (LAG) is placed in the down state.Command mode: Interface port[no] ptpEnables or disables PTP on the current port. Disabled ports will not supportPTP even if PTP is globally enabled.The default setting is enabled.Note: PTP is not supported on management ports.Command mode: Interface port/Interface portchannelTable 179. Port Configuration Options (continued)Command Syntax and Usage