- Introduction
- Key Features in Junos OS Release 21.4
- play_arrow Junos OS Release Notes for ACX Series
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for cRPD
- play_arrow What's New
- play_arrow What's New in 21.4R1
- What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- play_arrow Junos OS Release Notes for cSRX
- play_arrow Junos OS Release Notes for EX Series
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for JRR Series
-
- play_arrow What's New
- What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- play_arrow Junos OS Release Notes for MX Series
- play_arrow What's New
- play_arrow What's New in 21.4R1
- Hardware
- Architecture
- Chassis
- EVPN
- High Availability
- IP Tunneling
- Junos Telemetry Interface (JTI)
- Layer 2 VPN
- Interfaces
- MPLS
- Multicast
- Network Address Translation (NAT)
- Operation, Administration, and Maintenance (OAM)
- Platform and Infrastructure
- Routing Protocols
- Source Packet Routing in Networking (SPRING) or Segment Routing
- Services Applications
- Software Defined Networking (SDN)
- Software Installation and Upgrade
- Subscriber Management and Services
- VPNs
- Additional Features
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for NFX Series
- play_arrow Junos OS Release Notes for PTX Series
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for QFX Series
- play_arrow What's New
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for SRX Series
- play_arrow What's New in 21.4R1
- Application Identification (AppID)
- Authentication and Access Control
- Chassis
- Chassis Cluster-specific
- Flow-Based and Packet-Based Processing
- Hardware
- J-Web
- Network Address Translation (NAT)
- Platform and Infrastructure
- Software Installation and Upgrade
- Unified Threat Management (UTM)
- Additional Features
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- play_arrow Junos OS Release Notes for vMX
- play_arrow Junos OS Release Notes for vRR
- play_arrow Junos OS Release Notes for vSRX
- play_arrow What's New in 21.4R1
- play_arrow What's Changed
- Known Limitations
- Open Issues
- play_arrow Resolved Issues
- Documentation Updates
- Migration, Upgrade, and Downgrade Instructions
- Licensing
- Finding More Information
- Documentation Feedback
- Requesting Technical Support
- Revision History
MPLS
Support for optimizing auto-bandwidth adjustments for MPLS LSPs (QFX10008)—Starting in Junos OS Release 21.4R1, you can configure faster auto-bandwidth adjustment for MPLS LSPs under overflow or underflow conditions. This feature decreases the minimum allowed value of
adjust-threshold-overflow-limit
andadjust-interval
to 150 seconds whenadjust-threshold-overflow-limit
andadjust-threshold-underflow-limit
cross the configured threshold values. In releases before Junos OS Release 21.4R1, theadjust-interval
value is 300 seconds under overflow or underflow conditions.You can configure a faster in-place LSP bandwidth update that avoids signaling of a new LSP instance as part of make-before-break. To configure, include the
in-place-lsp-bandwidth-update
configuration statement at the[edit protocols mpls label-switched-path lsp-name]
hierarchy level.You can also configure RSVP interfaces to support subscription percentage per priority. To configure, include the
subscription priority priority percent value
configuration statement at the[edit protocols rsvp interface interface-name]
hierarchy level.[See Configuring Optimized Auto-bandwidth Adjustments for MPLS LSPs.]
Support for new statement
no-normalize-same-members
to resize member LSPs (MX Series and PTX Series)—In Junos OS Release 21.4R1, we've added theno-normalize-same-members
statement to the container LSP normalization configuration under the[edit protocols mpls container-label-switched-path NAME splitting-merging]
hierarchy. When you enable theno-normalize-same-members
configuration, you only resize the existing member LSPs with equal bandwidth. In earlier Junos OS releases, if normalization does not need to create or delete any member LSPs, you resignal the member LSPs with equal bandwidth.[See splitting-merging.]