Junos OS 13.3R5

New and Changed Features

This section describes the new features and enhancements to existing features in Junos OS Release 13.3R5 for the EX Series.

• Hardware
• Infrastructure
• Multicast
• Network Management and Monitoring
• OpenFlow

Hardware

• Extended cable manager for EX9214 switches—An extended cable manager is now available for EX9214 switches. The extended cable manager enables you to route cables away from the front of the line cards and Switch Fabric modules and provides easier access to the switch than the standard cable manager. To obtain the extended cable manager, order the MX960 Enhanced Cable Manager, ECM-MX960. (Note that installation of the extended cable manager must be done by a Juniper-authorized technician and that the service cost is in addition to the component cost.) 

Infrastructure

• Support for IPv6 for TACACS+ authentication (EX9200)—Starting with Release 13.3, Junos OS supports IPv6 along with the existing IPv4 support for user authentication using TACACS+ servers.

Multicast

• MLD snooping on EX9200 switches—EX9200 switches support Multicast Listener Discovery (MLD) snooping. MLD snooping constrains the flooding of IPv6 multicast traffic on VLANs on a switch. When MLD snooping is enabled on a VLAN, the switch examines MLD messages between hosts and multicast routers and learns which hosts are interested in receiving traffic for a multicast group. Based on what it learns, the switch then forwards multicast traffic only to those interfaces in the VLAN that are connected to interested receivers instead of flooding the traffic to all interfaces. You configure MLD snooping at either the [edit protocols] hierarchy level or the [edit routing-instances routing-instance-name protocols] hierarchy level. 

Network Management and Monitoring

• sFlow technology on EX9200 switches—EX9200 switches support sFlow technology, a monitoring technology for high-speed switched or routed networks. The sFlow monitoring technology randomly samples network packets and sends the samples to a monitoring station. You can configure sFlow technology on an EX9200 switch to continuously monitor traffic at wire speed on all interfaces simultaneously. The sFlow technology is configured at the [edit protocols sflow] hierarchy level. 

OpenFlow

Support for OpenFlow v1.0—Starting with Junos OS Release 13.3, EX9200 switches support OpenFlow v1.0. You use the OpenFlow remote controller to control traffic in an existing network by adding, deleting, and modifying flows on switches. You can configure one OpenFlow virtual switch and one active OpenFlow controller at the [edit protocols openflow] hierarchy level on each device running Junos OS that supports OpenFlow