Juniper JUNOSE 11.1.X - COMMAND REFERENCE N TO Z 4-6-2010 Command Reference Manual page 1425

Chapter 9: U, V, W, and Y Commands
undebug ip pim
undebug ip pim pimLog
Syntax
Command introduced before JUNOSe Release 7.1.0.
Release Information
Turns off the display of information previously enabled with the debug ip bgp
Description
command. There is no no version.
pimLog PIM log of interest
Options
Privileged Exec
Mode
1383
undebug ip pim