Specifications

Network Management and Monitoring
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Support of new system log by SNMP for notifying target addition (M Series, MX
Series, and T Series)—Beginning with Junos OS Release 13.3, when a new trap target
configuration is added to the agent, SNMP raises a new system log
SNMPD_TRAP_TARGET_ADD_NOTICE. The user can configure an event policy for this
system log event to raise a notification of the new trap target addition. This trap is sent
to all the configured trap targets including the new target.
Routing Policy and Firewall Filters
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New firewall filter match condition supported on MPC line cards (MX Series)—Starting
in Release 13.3R2, Junos OS supports the gre-key firewall filter match condition on MPC
line cards on MX Series 3D Universal Edge Routers. To configure the gre-key firewall
filter match condition, include the gre-key statement at the [edit firewall family inet
filter filter term term from] hierarchy level.
Routing Protocols
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Hidden clear commands—Starting in Junos OS Release 13.3, the purge option of the
clear ospf database and clear ospf3 database commands is hidden and unsupported.
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BGP attribute flag bits—In Junos OS Release 13.2 and earlier, unused attribute flag
bits were propagated unchanged. Starting in Junos OS Release 13.3, BGP attribute flag
bits are reset to zero by default and not propagated. This behavior is being standardized,
as specified in Internet draft draft-hares-idr-update-attrib-low-bits-fix-01, Update
Attribute Flag Low Bits Clarification.
•
Change in configuring keep none and keepall statements—Starting in Junos OS Release
13.3, configuring keep none or keep all no longer causes all BGP sessions to restart. For
peers that do not support route refresh, when you configure keep none or keep all, the
associated BGP sessions are restarted (flapped). For peers that do support route
refresh, the local speaker sends a route refresh and performs an import evaluation. For
these peers, the sessions do not restart when you configure keep none or keep all. To
determine if a peer supports refresh, check for Peer supports Refresh capability in the
output of the show bgp neighbor command. In previous releases, configuring keep none
or keep all caused all BGP sessions to restart.
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Modification to the default BGP extended community value— Starting in Junos OS
13.3, Junos OS modifies the default BGP extended community value used for MVPN
IPv4 VRF route import (RT-import) to the IANA-standardized value. The
mvpn-iana-rt-import statement is the default. The mvpn-iana-rt-import statement has
been deprecated; we recommend that you remove it from configurations.
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BGP hides a route received with a label block size greater than 256 (M Series, MX
Series, and T Series)— When a BGP peer (running Junos OS) sends a route with a label
block size greater than 256, the local speaker hides the route and does not re-advertise
this route. The output of the show route detail/extensive hidden/all displays the hidden
route and states the reason as label block size exceeds max supported value. In earlier
Junos OS releases, when a peer sent a route with a label block size greater than 256,
the routing protocol process (rpd) terminated abnormally.
59Copyright © 2015, Juniper Networks, Inc.
Changes in Behavior and Syntax