Specifications

Software Installation and Upgrade
■ Compact flash optimization—Previously, upgrading images on J-series routers
with a 256-MB compact flash from Release 8.5 onward involved removing
unwanted files in the images and removing the Swap Partition. Now, the software
accomplishes the upgrade efficiently by using mdimage to take another snapshot
of the compact flash, install the image, and restore configurations.
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
■ ISDN BRI
Changes in Default Behavior and Syntax
The following current system behavior, configuration statement usage, and operational
mode command usage might not yet be documented in the JUNOS software with
enhanced services documentation:
4 ■ JUNOS Features Not Supported for Chassis Clusters
JUNOS Software with Enhanced Services 9.2 for J-series Services Router Release Notes