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Services Interfaces

On Juniper Networks M-series and T-series routing platforms, individual services such as IP-over-IP encapsulation, link services such as multilink protocols, adaptive services such as stateful firewall filters and NAT, and sampling and logging capabilities are implemented by services Physical Interface Cards (PICs). On a J-series Services Router, these same features are implemented by the general-purpose CPU on the main circuit board.

Although the same JUNOS software image supports the services features across all routing platforms, on a J-series device no Physical Interface Module (PIM) is associated with services features.

To configure services on a J-series device, you must configure one or more internal interfaces by specifying PIM slot 0 and port 0—for example, gr-0/0/0 for GRE.

J-series devices support multilink protocol services on the ls-0/0/0 interface. At the logical level, the ls-0/0/0 interface supports the Multilink Point-to-Point Protocol (MLPPP) and Multilink Frame Relay (MLFR) FRF.15 encapsulation types, and at the physical level, the interface supports the MLRF FRF.16 encapsulation type and Compressed Real-Time Transport Protocol (CRTP).

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