H3C S6520-SI Series Command Reference Manual

Also see for MS4600 Series: Troubleshooting guide Command reference

H3C S6520-SI Series Command Reference Manual Manual pdf 24 page image

18(To leave the existing filename unchanged, press the enter key):flash:/startup.cfg exists, overwrite? [Y/N]:yValidating file. Please wait............................Saved the current configuration to mainboard device successfully.# Activate the IRF port.[Sysname] irf-port-configuration activemad arp enableUse mad arp enable to enable ARP MAD.Use undo mad arp enable to disable ARP MAD.Syntaxmad arp enableundo mad arp enableDefaultARP MAD is disabled.ViewsManagement Ethernet interface viewVLAN interface viewPredefined user rolesnetwork-adminUsage guidelinesDo not configure ARP MAD together with LACP MAD or BFD MAD, because they handle collisionsdifferently.When you configure ARP MAD on a VLAN interface, follow these restrictions and guidelines:Category Restrictions and guidelinesARP MAD VLAN• Do not enable ARP MAD on VLAN-interface 1.• If you are using an intermediate device, perform the following tasks:{ On the IRF fabric and the intermediate device, create a VLAN forARP MAD.{ On the IRF fabric and the intermediate device, assign the ports ofARP MAD links to the ARP MAD VLAN.{ On the IRF fabric, create a VLAN interface for the ARP MAD VLAN.• As a best practice, do not use the ARP MAD VLAN for any otherpurposes.ARP MAD and featureconfigurationIf an intermediate device is used, make sure the following requirements aremet:• Run the spanning tree feature between the IRF fabric and theintermediate device to ensure that there is only one ARP MAD link inforwarding state. For more information about the spanning tree featureand its configuration, see Layer 2—LAN Switching Configuration Guide.• Enable the IRF fabric to change its bridge MAC address as soon as theaddress owner leaves.• If the intermediate device is also an IRF fabric, assign the two IRF fabricsdifferent domain IDs for correct split detection.