BigIron RX Series Configuration Guide 57553-1001810-01Changing IGMP V1 and V2 parameters 23• If directly connected source passed source RPF check and completed data registrationwith RP or• If non directly connected source passed source RPF check.In PIM-DM• The route has no OIF and• passed source RPF check and• Router has no downstream PIM neighbor.If the OIF is inserted after the hardware-drop entries are installed, the hardware entries will beupdated to include the OIFs.NOTEDisabling hardware-drop does not immediately take away existing hardware-drop entries, they willgo through the normal aging processing when the traffic stops.Configuring PMRIPMRI is enabled by default. To disable PMRI, enter commands such as the following.BigIron RX(config)#router pimBigIron RX(config-pim-router)#hardware-drop-disableSyntax: [no] hardware-drop-disableDisplaying hardware-dropUse the show ip pim sparse command to display if the hardware-drop feature has been enabled ordisabled.BigIron RX(config)#show ip pim sparseGlobal PIM Sparse Mode SettingsHello interval : 30 Neighbor timeout : 105Bootstrap Msg interval: 60 Candidate-RP Advertisement interval: 60Join/Prune interval : 60 SPT Threshold : 1Inactivity interval : 180 SSM Enabled : NoHardware Drop Enabled : YesSyntax: show ip pim sparseChanging IGMP V1 and V2 parametersIGMP allows Brocade routers to limit the multicast of IGMP packets to only those ports on therouter that are identified as IP Multicast members.The router actively sends out host queries to identify IP Multicast groups on the networkThe following IGMP V1 and V2 parameters apply to PIM and DVMRP:• IGMP query interval – Specifies how often the device queries an interface for groupmembership. Possible values are 1 – 3600. The default is 125.
