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EVPN

  • EVPN Type 2 and Type 5 route coexistence (QFX5130-32CD, QFX5130-48C, and QFX5700)—Starting in Junos OS Evolved Release 21.4R1, we support the coexistence of EVPN Type 2 and Type 5 routes in EVPN-VXLAN edge-routed bridging (ERB) overlay fabrics. This feature enables more efficient traffic flow and better usage of Packet Forwarding Engine resources. The switch applies a preference algorithm when you enable Type 5 routes. For any destinations for which the switch has no Type 5 route, the switch uses Type 2 routes by default. Otherwise, the switch gives preference to:

    • Type 2 routes for local ESI interfaces (locally learned routes)
    • Type 5 routes for all other destinations within the data center or across data centers

    You can refine these preferences by configuring routing policies in the EVPN routing instance to control the Type 5 routes that the switch imports and exports.

    [See EVPN Type 2 and Type 5 Route Coexistence with EVPN-VXLAN.]

  • DHCP relay in EVPN-VXLAN (QFX5130-32CD)—Starting in Junos OS Evolved Release 21.4R1, we support DHCP relay in an EVPN-VXLAN fabric. You can configure DHCP relay in centrally-routed and edge-routed bridging overlays. Support for DHCP relay includes DHCPv4 and DHCPv6. We introduced this feature in Junos OS Evolved Release 21.2R2..

    [See DHCP Relay Agent over EVPN-VXLAN.]