New and Changed Features

This section describes the new features and enhancements in this release.

• Class of Service support for four-level hierarchical scheduling—Four-level hierarchical scheduling is supported for 16 level 2 nodes. You must set the maximum number of hierarchical scheduling levels to 3 by configuring the maximum-hierarchy-levels 3 option at the [edit interfaces interface-name hierarchical-scheduler] hierarchy level. If the maximum-hierarchy-levels option is not configured, it is automatically set to 2. You set the number of level 2 nodes by configuring the maximum-l2-nodes number-of-nodes option at the [edit interfaces interface-name hierarchical-scheduler] hierarchy level where number-of-nodes is the number of level 2 nodes; the default value is 4 and two of those nodes are used for control traffic. If you configure less than four nodes, the value is accepted but there are not enough nodes for other applications to use. You enable CoS by configuring the flexible-queuing-mode option at the [edit chassis fpc 0] hierarchy level.

  Note

  The FPC reboots if you change the number of level 2 nodes or enable CoS.

  [See Understanding Hierarchical CoS for Subscriber Interfaces.]

• Group VPN support—vMX supports Group VPNs. You enable inline service interfaces by configuring the inline-services bandwidth (1g | 10g) option at the [edit chassis fpc 0 pic 0] hierarchy level. The bandwidth value is not used for si traffic, so you can choose either value.

  Note

  The FPC reboots if you enable inline service interfaces.

  vMX supports the same Group VPNv2 features as MX Series routers. Group VPNv2 is the name of the Group VPN technology on MX Series routers. Group VPNv2 integrates routing and encryption in the network. vMX does not support match-direction input configuration for interface-style configuration. vMX does not support fail-open, partial fail-open, or time-based anti-replay protection.

  [See Configuring Group VPNs.]

• vMX mode display—By default, performance mode is enabled for vMX. If you have not configured enough vCPUs, vMX runs in lite mode. To display the mode in which vMX is running (performance mode or lite mode), the output of the show chassis hardware command displays the mode in the part number field associated with the FPC. RIOT-PERF indicates performance mode and RIOT-LITE indicates lite mode.