Operation Manual – System Maintenance and DebuggingH3C S7500 Series Ethernet Switches Chapter 4 Device Management4-74.3.2 Pause Frame Protection Mechanism Configuration ExampleI. Network requirementsEnable pause frame protection mechanism on the card in Slot 7 of the switch.II. Configuration procedure1) Enter system view. system-view[H3C]2) Enable pause frame protection mechanism on the card seated in slot 7.[H3C] pause-protection enable slot 74.4 Configuring Layer 3 Connectivity Detection4.4.1 Introduction to layer 3 connectivity detectionThe function that detects layer 3 connectivity is implemented as follows. Local devicessend ARP request packets continuously to the IP addresses of the devices to bedetected. Users can then locate, solve, and log link problems by monitoring the peerdevices through the received ARP response packets.Note:This function requires no Layer 3 device existing between the local peer and the remotepeer.4.4.2 Layer 3 Connectivity Detection Configuration TaskNote:Before performing this configuration, make sure the physical link between the localpeer and the remote peer is correct, and the related VLAN interfaces are assigned withcorrect IP addresses.Follow these steps to configure Layer 3 connectivity detection: