J-series Services Router Features

This section describes the new J-series Services Routers features, available with the JUNOS 9.0R4 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

For more information about the JUNOS Internet software that runs on Services Routers, see the manuals listed in Table 5.

Platform and Infrastructure

• Port mirroring and enhanced packet capture. Port mirroring sends a copy of all network packets received on one switch port to a network monitoring connection on another switch port for analysis. Port mirroring is used for network applications such as intrusion detection systems that require monitoring of network traffic.

  With packet capture, you can now capture packets with Multilink Point-to-Point Protocol (MLPP) and Multilink Frame Relay (MFR) encapsulation for analysis.

MPLS Applications

• Support for point-to-multipoint MPLS LSPs. A point-to-multipoint MPLS label-switched path (LSP) is a Resource Reservation Protocol (RSVP)-signaled LSP with a single source and multiple destinations. By taking advantage of the MPLS packet replication capability of the network, point-to-multipoint LSPs avoid unnecessary packet replication at the inbound router. Packet replication takes place only when packets are forwarded to two or more different destinations requiring different network paths.

  Point-to-multipoint LSPs allow you to

  • Use MPLS for point-to-multipoint data distribution. This functionality is similar to that provided by IP multicast.
  • Add and remove branch LSPs from a main point-to-multipoint LSP without disrupting traffic. The unaffected parts of the point-to-multipoint LSP continue to function normally.
  • Configure a Services Router to be both a transit router and an egress router for different branch LSPs of the same point-to-multipoint LSP.