J-series Services Router Features

This section describes the new J-series Services Routers features, available with the JUNOS 8.4R4 release. For more information, see the following manuals:

• J2320, J2350, J4350, and J6350 Services Router Getting Started Guide
• J2300, J4300, and J6300 Services Router Getting Started Guide
• J-series Services Router Basic LAN and WAN Access Configuration Guide
• J-series Services Router Advanced WAN Access Configuration Guide
• J-series Services Router Administration Guide

Interfaces and Chassis

• New J2320 and J2350 Services Routers—The J2320 and J2350 Services Routers enhance and extend the capabilities of the existing J2300 Services Router. They provide significantly improved performance and a modular architecture for increased flexibility.

  The J2320 Services Router occupies 1 rack unit (RU), uses AC power, and provides three input/output (I/O) slots.

  The J2350 Services Router occupies 1.5 RUs, uses AC or DC power, and provides five I/O slots.

  The new Services Routers support the same JUNOS functionality as the J2300 Services Router, and offer the following additional features:

  • Removable Physical Interface Modules (PIMs).
  • Support for Gigabit Ethernet uPIMs, Avaya voice over IP (VoIP) modules, and all other existing J-series PIMs (except the DS3 or E3 PIM and the 1–port Gigabit Ethernet ePIM).
  • Four built-in Gigabit Ethernet ports that serve as the primary LAN link connections. Each port supports link speeds of 10, 100, or 1000 megabits per second (Mbps).
  • An optional Crypto Accelerator Module that enhances performance of cryptographic algorithms used in IP Security (IPsec) services. A Services Router without the Crypto Accelerator Module uses the existing software-based OpenSSL implementation of IPsec algorithms.
  • A time-division multiplexing (TDM) midplane to support VoIP services.

  [J2320, J2350, J4350, and J6350 Services Router Getting Started Guide]

• New 1-port SFP Gigabit Ethernet uPIM—A new 1-port Gigabit Ethernet uPIM provides small form-factor pluggable (SFP) connectors for use with a variety of copper and optical interfaces. The uPIM can be installed in either high-speed or regular slots on the J2320, J2350, J4350, and J6350 Services Routers. [J2320, J2350, J4350, and J6350 Services Router Getting Started Guide, J-series Services Router Basic LAN and WAN Access Configuration Guide]
• Ethernet Layer 2 switching for uPIMs—J-series 16-port, 8-port, and 6-port Gigabit Ethernet uPIMs can now forward traffic at both Open Systems Interconnection (OSI) Layer 2 (for switching) and OSI Layer 3 (for routing). You can configure a uPIM to operate in routing mode (the default) or switching mode. Routing mode provides traditional routing. Switching mode provides the following features:
  • Layer 3 forwarding—The ability to route traffic destined for WAN interfaces—interfaces on other PIMs installed in the chassis
  • Layer 2 forwarding—The ability to switch intra-LAN traffic from one host on the LAN to another LAN host—one port on a uPIM to another port on the same uPIM

  To enable switching mode, include the switching option at the [edit chassis fpc fpc-slot-number pic pic-slot-number ethernet pic-mode] hierarchy level. To enable routing mode, include the routing option at the same hierarchy level. To view Layer 2 switching statistics, issue the show interfaces interface-name switch-port port-number command. To clear the Layer 2 switching statistics, issue the clear interfaces statistics interface-name switch-port port-number command.

  Note: Gigabit Ethernet uPIMs provide no 802.1q virtual LAN or spanning-tree support. 802.1q VLAN tags are supported on routed uPIM interfaces.

  [J-series Services Router Basic LAN and WAN Access Configuration Guide]

• Power management—On J-series Services Routers, the system monitors the PIMs and verifies that a newly inserted PIM falls within the power capacity of the chassis. CLI commands allow you to choose which PIM to turn off if the power capacity is exceeded. For more information, see Power and Heat Dissipation Requirements for J-series PIMs. [J2320, J2350, J4350, and J6350 Services Router Getting Started Guide]
• New commands for Avaya VoIP modules (J-series Services Routers only)—The following operational mode commands provide better access to and more information about the Avaya VoIP modules:
  • request tgm login fpc slot-number user username—Enables users to log in to the TGM550 Telephony Gateway Module easily.
  • show tgm fpc slot-number dsp-capacity—Shows the DSP capacity of the TGM board in terms of the number of voice channels that it can support—for example, 10, 20, or 80 channels.
  • show tgm telephony-interface-module status—Displays the status of Telephony Interface Modules (TIMs).
• Support for high-density TIMs—J-series Services Routers now support the following high-density Telephony Interface Modules (TIMs) for Avaya VoIP service:
  • TIM508—Avaya TIM with 8 analog telephone ports. You can configure these ports as direct inward dialing (DID) trunk ports.
  • TIM516—Avaya TIM with 16 analog telephone ports. You can configure 8 of these ports as DID trunk ports.
  • TIM518—Avaya TIM with 8 analog telephone ports and 8 analog trunk ports. You can configure some or all of the analog telephone (LINE) ports as analog DID trunk ports.
• Lower-DSP-capacity Avaya TGM550 modules for VoIP services (J-series Services Routers)—For VoIP deployments that require fewer voice channels, J-series Services Routers now support Avaya TGM550 Terminal Gateway Modules (TGMs) with low-density digital signal processors (DSPs) that provide 10 or 20 channels. [J-series Services Router Basic LAN and WAN Access Configuration Guide]