46 ContentsCoS Configuration Example . . . . . . . . . . . . . . 132842 Configuring Auto VoIP . . . . . . . . . . . . . 1331Auto VoIP Overview . . . . . . . . . . . . . . . . . . 1331How Does Auto-VoIP Use ACLs? . . . . . . . . . 1332Default Auto VoIP Values . . . . . . . . . . . . . . . 1332Configuring Auto VoIP (Web) . . . . . . . . . . . . . 1333Auto VoIP Global Configuration. . . . . . . . . . 1333Auto VoIP Interface Configuration . . . . . . . . 1333Configuring Auto VoIP (CLI) . . . . . . . . . . . . . . 133543 Managing IPv4 and IPv6 Multicast . . . 1337L3 Multicast Overview . . . . . . . . . . . . . . . . . 1337What Is IP Multicast Traffic? . . . . . . . . . . . 1338What Multicast Protocols Does the SwitchSupport?. . . . . . . . . . . . . . . . . . . . . . 1339What Are the Multicast Protocol Roles? . . . . . 1339When Is L3 Multicast Required on theSwitch? . . . . . . . . . . . . . . . . . . . . . . 1340What Is the Multicast Routing Table? . . . . . . 1341What Is IGMP? . . . . . . . . . . . . . . . . . . 1341What Is MLD? . . . . . . . . . . . . . . . . . . . 1342What Is PIM? . . . . . . . . . . . . . . . . . . . 1343What Is DVMRP? . . . . . . . . . . . . . . . . . 1353Default L3 Multicast Values . . . . . . . . . . . . . . 1355Configuring General IPv4 MulticastFeatures (Web) . . . . . . . . . . . . . . . . . . . . . 1357Multicast Global Configuration . . . . . . . . . . 1357