Junos Enterprise Routing, 2nd Edition

Junos Services

A Junos software service consists of a variety of Layer 2 services, including:

• Multilink Point-to-Point Protocol (MLPPP)

• Multilink Frame Relay (MLFR)

• Compressed Real-Time Transport Protocol (CRTP)

• Multiclass MLPPP

• Aggregated Ethernet (AE)

• Ethernet Switching

• Stateful firewall

• NAT

• Intrusion detection service (IDS)

• IPSec

• Layer 2 Tunneling Protocol (L2TP)

• Active monitoring (cflowd)

• Tunnel services (Generic Routing Encapsulation [GRE], IP-IP, Physical Interface Module [PIM] register encapsulation)

• Data link switching (DLSw)

In an M-series router, enabling these services will require an additional piece of hardware: a Physical Interface Card (PIC) for packet processing. A J-series router or SRX Services Gateway supports most of the features in the preceding list and performs the packet processing within the software, so no special hardware is necessary. Depending on the type of service required and the size of the service, different PICs can be used. The current offerings include:

Link Services PIC

Provides simultaneous support for three separate capabilities: enhanced multilink bundling, tunneling, and link fragmentation and interleaving (LFI) on larger M-series routers.

Encryption Services PIC

Provides IPSec encryption for IPSec tunnels.

Monitoring Services III PIC

Provides J-Flow accounting at high speeds and across millions of flows, using standards-based cflowd v5 and v8 records for the larger M-series and T-series routers.

Tunnel Services PIC

Provides tunnel services such as GRE, IP-IP, ...