Release 9.3R4 of JUNOS software with enhanced services includes
the following features. For more information, see the manuals described
in List of Technical Publications.
Switching
IGMP Snooping—Internet
Group Management Protocol (IGMP) snooping regulates multicast traffic
in a switched network. With IGMP snooping enabled, a LAN switch monitors
the IGMP transmissions between a host (a network device) and a multicast
router, keeping track of the multicast groups and associated member
ports. The switch uses that information to make intelligent multicast-forwarding
decisions and forward traffic to the intended destination interfaces.
To configure IGMP snooping, use the [edit protocol igmp-snooping] statement. For more information, see the JUNOS Software Interfaces and Routing Configuration Guide.
JUNOS Features Not Supported for Chassis Clusters
For this release of JUNOS software with enhanced services, the
following features are not supported when chassis clustering is enabled
on the router:
Packet-based protocols. All
packet-based protocols, such as Multiprotocol Label Switching (MPLS),
Connectionless Network Service (CLNS), and IP version 6 (IPv6)
Services interfaces functions. Any function that depends on the configurable J-series services
interfaces:
ls-0/0/0—Link services Multilink Point-to-Point
Protocol (MLPPP), Multilink Frame Relay (MLFR), and Compressed Real-Time
Transport Protocol (CRTP)
gr-0/0/0—Generic routing encapsulation
(GRE) and tunneling
ip-0/0/0—IP-over-IP (IP-IP) encapsulation
pd-0/0/0, pe/0/0/0, and mt-0/0/0—All multicast protocols
lt-0/0/0—Real-time performance monitoring
(RPM)
WXC Integrated Services Module (WXC ISM 200)
Ethernet switching on some PIMs:
4-port Fast Ethernet ePIMs running in switching mode
8-port and 16-port Gigabit Ethernet uPIMs running in switching
mode
