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Routing Protocols

  • Maximum reference bandwidth increased to 4 TB for IGP protocols (ACX7100-32C, ACX7100-48L, ACX7509, PTX10001-36MR, PTX10003, PTX10004, PTX10008, PTX10016, QFX5130-32CD, QFX5700, and QFX5220)—Starting with Junos OS Evolved Release 22.3R1, we've increased the maximum reference bandwidth for IS-IS and OSPF interior gateway protocol (IGP) protocols from 1 Tbps to 4 Tbps. The default bandwidth is 100 Mbps. You can increase the reference bandwidth to adjust the path metrics, which you use to determine the preferred path in case of multiple equal-cost routes to a destination.

    To configure the reference bandwidth, use the reference-bandwidth reference-bandwidth statement at the [edit protocols isis] hierarchy level or the [edit protocols (ospf | ospf3)] hierarchy level.

    [See reference-bandwidth (Protocols IS-IS) and reference-bandwidth (Protocols OSPF).]

  • Fast lookup of origin and neighbor ASs (ACX7100-32C, ACX7100-48L, ACX7509, PTX10001-36MR, PTX10004, PTX10008, PTX10016, QFX5130-32CD, QFX5700, and QFX5220)—Starting in Junos OS Evolved Release 22.3R1, you can use the new asregex-optimize configuration statement at the [edit policy-options defaults] hierarchy level to perform a fast lookup of origin and neighbor autonomous systems (ASs). The asregex-optimize configuration statement is not enabled by default.

    [See Improve the Performance of AS Path Lookup in BGP Policy.]

  • Synchronous Ethernet with G.8262 Standard Support (ACX7509)—Starting in Junos OS Evolved Release 22.3R1, ACX7509 routers support Synchronous Ethernet features compliant with the following International Telecommunication Union Telecommunication Standardization (ITU-T) standards to facilitate the transference of clock signals over the Ethernet physical layer.

    • Synchronous Ethernet (G.8262) – Timing and synchronization aspects in packet networks. Specifies timing characteristics of synchronous Ethernet equipment clock (EEC).

    • Synchronous Ethernet Enhanced (G.8262.1)