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24-port 10-Gigabit Ethernet LAN/WAN PIC on Type 5 FPC Overview

This section describes the main features and caveats of the 24-port 10-Gigabit Ethernet LAN/WAN PIC with SFP+ (model number PF-24XGE-SFPP).

The following major software features are supported on the 24-port 10-Gigabit Ethernet LAN/WAN PIC with SFP+ (model number PF-24XGE-SFPP):

  • Twenty-four 10-Gigabit Ethernet interfaces in two-to-one oversubscription of traffic in oversubscribed mode or 12 ports in line-rate mode. For more information about oversubscribed mode and line-rate mode, see the Configuring Line-Rate Mode on 10-Gigabit Ethernet LAN/WAN PICs Supporting Oversubscription.
  • Traffic is classified as control traffic or best-effort traffic with non-class-of-service-aware tail drops of best-effort traffic in oversubscribed mode.

    The aggregate bandwidth of all the ports together is 120 Gbps. No hard partitioning of bandwidth is done—that is, if one port group is active, it can support 120 Gbps traffic. The bandwidth for best-effort traffic is shared among all the 24 ports.

    Note that the preclassification is restricted to two traffic classes, and is not user-configurable.

  • All Junos OS configuration commands supported on the existing 10-Gigabit Ethernet LAN/WAN PIC with SFP+.
  • The output of the show interfaces extensive operational mode command now displays preclassification queue counters.
  • Line-rate mode operation of the first 12 ports can be achieved by using the [set chassis fpc fpc-number pic pic-number linerate-mode] command. By default, the 24-port 10-Gigabit Ethernet LAN/WAN PIC with SFP+ works in oversubscribed mode.
  • LAN PHY mode and WAN PHY mode on a per-port basis. WAN PHY mode can be achieved by using the [set interfaces interface-name framing wan-phy] command.
  • WAN PHY features, such as the following:
    • Insertion and detection of path trace messages.
    • Ethernet WAN Interface Sublayer (WIS) object.
  • Aggregated Ethernet is supported only in line-rate mode.
  • Link aggregation group (LAG) is supported only in line-rate mode.
  • 4000 logical interfaces per physical interface and 32,000 logical interfaces per chassis.
  • Access to all 10-Gigabit Ethernet port counters through SNMP.

Note: Graceful Routing Engine switchover (GRES) and nonstop active routing (NSR) are now supported on T4000 routers.

 

Related Documentation

 

Published: 2013-02-13

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