Specifications

Services to be synchronized statefully include:
•
Stateful firewall
•
NAT (NAPT44 and APP only)
Both IPv4 and IPv6 sessions are synchronized.
Synchronization occurs for long-lived flows as defined by a configurable synchronization
threshold.
[See Inter-Chassis High Availability for MS-MIC and MS-MPC.]
•
Support for unified in-service software upgrade on MX Series routers with MPC3
and MPC4E (MX240, MX480, and MX960)—Starting in Release 13.3, Junos OS
supports unified in-service software upgrade (ISSU) on MX Series routers with MPC3
and MPC4E. Unified ISSU is a process to upgrade the system software with minimal
disruption of transit traffic and no disruption of the control plane. In this process, the
new system software version must be later than the version of the previous system
software. When unified ISSU completes, the new system software state is identical
to that of the system software when the system upgrade is performed through a cold
boot.
•
MX Series Virtual Chassis support for inline flow monitoring (MX Series routers with
MPCs)—Starting in Junos OS Release 13.3R3, you can configure inline flow monitoring
for an MX Series Virtual Chassis. Inline flow monitoring enables you to actively monitor
the flow of traffic by means of a router participating in the network.
Inline flow monitoring for an MX Series Virtual Chassis provides the following support:
•
Active sampling and exporting of both IPv4 and IPv6 traffic flows
•
Sampling traffic flows in both the ingress and egress directions
•
Configuration of flow collection on either IPv4 or IPv6 devices
•
Use of the IPFIX flow collection template for traffic sampling (both IPv4 and IPv6
export records)
Interfaces and Chassis
•
Transmit ESMC SSM quality level from synchronous Ethernet mode (MX
Series)—Starting in Junos OS Release 13.3, when an MX Series router is configured in
synchronous Ethernet mode, the ESMC SSM quality level can be transmitted. The set
chassis synchronization max-transmit-quality-level command sets a threshold
quality level for the entire system.
•
Ethernet frame padding with VLAN (DPCs and MPCs running on MX Series
routers)—Starting in Junos OS Release 13.3, DPCs and MPCs on MX Series routers pad
the Ethernet frame with 68 bytes if the packet is VLAN tagged and the frame length
is less than 68 bytes and greater than or equal to 64 bytes at the egress of the interface.
•
PTP redundancy support for line cards (MX Series and M Series)—Beginning with
Junos OS Release 13.3, line cards on MX Series and M Series routers support slave
redundancy. If multiple slave streams are configured across line cards and the active
Copyright © 2015, Juniper Networks, Inc.34
Release Notes: Junos OS Release 13.3R6 for the EX Series, M Series, MX Series, PTX Series, and T Series