3Com Switch 7750 SeriesCommand Reference Guide – Multicast Chapter 5 PIM Configuration Commands5-19source-mask-length: Specifies mask length of the group address.incoming-interface: Specifies incoming interface for the route entry in PIM routingtable.interface-type interface-number: Specifies the VLAN interface.DescriptionUse the reset pim routing-table command to clear all PIM route entries or thespecified PIM route entry.You can type in source address first and group address after in the command, as longas they are valid. Error information will be given if you type in invalid addresses.If in this command, the group-address is 224.0.0.0/4 and source-address is the RPaddress (where group address can have a mask, but the resulted IP address must be224.0.0.0, and source address has no mask), then it means only the (*, *, RP) item willbe cleared.If in this command, the group-address is any a group address, and source-address is 0(where group address can have a mask, and source address has no mask), then onlythe (*, G) item will be cleared.This command shall clear not only multicast route entries from PIM routing table, butalso the corresponding route entries and forward entries in the multicast core routingtable and MFC.Related command: reset multicast routing-table, reset multicast forwarding-table,and display pim routing-table.Example# Clear the route entries with group address 225.5.4.3 from the PIM routing table.<3Com> reset pim neighbor 25.5.4.35.1.21 source-policySyntaxsource-policy acl-numberundo source-policyViewPIM viewParameteracl-number: Basic or advanced ACL, in the range of 2000 to 3999.