PDN Gateway Overview
▀ Product Description
▄ Cisco ASR 5x00 Packet Data Network Gateway Administration Guide
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Product Description
The P-GW is the node that terminates the SGi interface towards the PDN. If a UE is accessing multiple PDNs, there
may be more than one P-GW for that UE. The P-GW provides connectivity to the UE to external packet data networks
by being the point of exit and entry of traffic for the UE. A UE may have simultaneous connectivity with more than one
P-GW for accessing multiple PDNs. The P-GW performs policy enforcement, packet filtering for each user, charging
support, lawful interception and packet screening.
Figure 1.
P-GW in the Basic E-UTRAN/EPC Network