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Subscriber Management and Services

  • BNG redundancy for DHCP subscribers using packet-triggered based recovery (MX Series)—In Junos OS Release 22.2R1, we’ve introduced broadband network gateway (BNG) redundancy for DHCP subscribers using packet-triggered based recovery. This type of redundancy is also known as stateless redundancy. This feature provides simple, easy-to-use, and lightweight stateless BNG redundancy for DHCP subscriber services with minimal traffic loss.

    The stateless BNG redundancy for DHCP subscribers supports dynamic C-VLAN and static VLAN models for both relay and server.

    [See BNG Redundancy for DHCP Subscribers Using Packet Triggered Based Recovery, auto-configure (IPv4), and auto-configure (IPv6).]

  • Define maximum number of failed attempts for a PPP service (MX Series)—Starting in Junos OS Release 22.2R1, you can define the maximum number of failed attempts allowed while establishing the Point-to-Point Protocol (PPP) service. Configure the max-failures statement at the [edit protocols ppp-service] hierarchy level.

    [See max-failures.]

  • N+1 support for BNG M:N subscriber service redundancy (MX Series)—Starting in Junos OS Release 22.2R1, a single broadband network gateway (BNG) can perform as a backup BNG for multiple primary BNGs. You can configure the backup BNG in service-activation-on-failover mode, which consumes less resources to back up the maximum number of subscribers. The service-activation-on-failover mode enables the line cards in the backup BNG to host three times more subscribers than the primary BNGs.

    This enhancement significantly reduces the resources that are reserved for redundancy in the backup BNG.

    [See N+1 Support for BNG M:N Subscriber Service Redundancy, redundancy (M:N Subscriber Redundancy), and show system subscriber-management redundancy-state interface.]

  • Support for guaranteed bit rate (GBR) on Junos Multi-Access User Plane (MX240, MX480, and MX960)—Starting in Junos OS Release 22.2R1, the Junos Multi-Access User Plane has added GBR support and supports 3GPP standards for both 4G and 5G networks. The following features are added:

    • GBR support in the downlink direction and partial support in the uplink direction
    • Bandwidth reservation for express and GBR traffic flows
    • Mapping of transport level marking to forwarding classes
    • Call admission control (CAC)
    • Maximum bit rate (MBR) and GBR policers

    [See QoS in Junos Multi-Access User Plane.]