What’s Changed in Release 21.1R2
EVPN
- Minimum auto-recovery time reduced for duplicate MAC address detection (ACX
Series, PTX Series and QFX Series)—Junos OS has changed the minimum
value allowed for auto-recovery time for duplicate MAC address detection from 5
minutes to 1 minute. The auto-recovery time is the length of time that the
device suppresses a duplicate MAC address. Reducing the auto-recovery time
allows customers to quickly recover from a MAC address duplication state. You
configure the
auto-recovery-time
option under theduplicate-mac-detection
statement at theedit routing-instances routing-instance-name protocols evpn
oredit protocols evpn
hierarchy.
General Routing
- Enhancement to the show interfaces (Aggregated Ethernet) command (PTX Series
and QFX Series)—When you run the
show interfaces extensive
command for aggregated Ethernet interfaces, you can now view following additional fields for MAC statistics : Receive, Transmit, Broadcast and Multicast packets.[See show chassis pic.]
-
Enhancement to the default
remnant-holdtime
(Junos OS Evolved platforms: QFX5130-32CD, and QFX5220)— Starting this release, the defaultremnant-holdtime
has been increased from 180 seconds to 300 seconds. This provides sufficient time for protocols to start and sync routes from neighbors in a scaled environment, during rpd restart. You can configureremnant-holdtime
at theedit routing-options forwarding-table
hierarchy level.See forwarding-table .]
Interfaces and Chassis
-
Fabric OAM is disabled by default (PTX10003-80C and PTX10003-160C)—We've disabled the fabric Operation, Administration, Maintenance (OAM) feature. Therefore, the CLI command
set chassis fabric oam detection-disable
is not functional as the feature remains disabled by default in this release. In Junos OS Evolved Release 20.4R1, the fabric OAM feature, which helps in detecting failures in fabric paths, was enabled by default.[See Error Handling by Fabric OAM.]
Junos Telemetry Interface
You can enter zero suppression no-zero-suppression
at the
edit services analytics
hierarchy level to disable zero
suppression for gRPC-based sensors. When this feature is enabled, data for a sensor
is sent to the collector if the sensor value is zero. All key value pair updates
will be streamed to a collector without performing any zero suppression.
To enable zero suppression
again (the default), delete the
configuration by entering delete services analytics zero-suppression
no-zero-suppression
.
Whenever this feature is set or deleted, any existing collector is disconnected.
Network Management and Monitoring
-
Fault alarm generated for feed failure on a DC power supply (PTX10008)—A fault alarm is generated when only one of the feeds on a DC power supply (A0 and B0 or A1 and B1) is faulty.
-
Changes in contextEngineID for SNMPv3 INFORMS (ACX Series, PTX Series, QFX Series)— Now the contextEngineID of SNMPv3 INFORMS is set to the local engine-id of Junos devices. In earlier releases, the contextEngineID of SNMPv3 INFORMS was set to remote engine-id.