Specifications

General Routing
•
In MX2020 routers and T Series routers, memory usage of the device increases when
auto-64-bit statement is issued.
High Availability (HA) and Resiliency
•
The MPC5E, MPC5EQ, and MP6E cards do not support unified ISSU on an MX Series
Virtual Chassis.
Services Applications
•
With static NAT configured as basic NAT44 or destination NAT44 on MX Series routers
with MS-MICs and MS-MPCs, the input and output bytes and traffic rate values
displayed under the Input bytes and Output bytes fields respectively in the output of
the show interfaces command differ by approximately 25 percent for ms- interfaces
with lower packet sizes.
Software Installation and Upgrade
•
Downgrading to Junos OS 12.3 when the configuration includes the
targeted-distribution statement—In Junos OS Release 12.3, the targetted-distribution
statement at the [edit interfaces demux0 unit logical-unit-number] hierarchy level is
misspelled. Starting in Junos OS Release 13.3, the spelling for this statement is corrected
to targeted-distribution. If you use the misspelled targetted-distribution statement in
Junos OS Release 13.3 or higher, the CLI corrects the spelling to targeted-distribution
in your configuration, so existing scripts still work. The correct spelling is not backward
compatible; Junos OS Release 12.3 supports only the targetted-distribution spelling. If
you downgrade from Release 13.3 or higher to Release 12.3, all correctly spelled
targeted-distribution statements are removed from the configuration and configuration
scripts with the correct spelling fail.
Subscriber Management and Services
•
The clear pppoe sessions command does not have an all option and consequently
clears all current PPPoE subscriber sessions when you enter the command. The CLI
does not prompt you to confirm that you want to clear all sessions. When you want to
gracefully terminate a subscriber session, always include the interface name associated
with the session. For some network configurations, if your subscribers have unique
usernames, you can alternatively issue the clear network-access aaa subscriber username
command.
•
On the MX Series, subscriber management uses firewall filters to capture and report
the volume-based service accounting counters that are used for subscriber billing. You
must always consider the relationship between firewall filters and service accounting
counters, especially when clearing firewall statistics. When you use the clear firewall
command (to clear the statistics displayed by the show firewall command), the
command also clears the service accounting counters that are reported to the RADIUS
accounting server. For this reason, you must be cautious in specifying which firewall
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Known Behavior