You can view PGCP flows with the show services pgcp flows command. You can view information for all PGCP flows, or you can
include keywords to limit the number of flows displayed or to display
flows for a particular:
VPG
Gate
Application protocol
Source or destination port
Source or destination prefix
Protocol
Service set
Related Topics
Chapter 25, Packet Gateway Control Protocol
Operational Mode Commands in JUNOS System Basics
and Services Command Reference