Routing

EVPN LACP multihoming icm VRRP

  • 1.  EVPN LACP multihoming icm VRRP

    Posted 05-25-2021 04:15
    For a customer we currently use L2 and L3 subinterfaces on the same physical link. The L2 subinterfaces are connected to a VPLS routing-instance (multihomed) and the L3 subinterfaces are connected to a VRF routing-instance.  The L3 subinterfaces are running VRRP between to MX routers. 

    In a POC environment we are testing to migrate the VPLS connections to a EVPN configuration. For the L2 connections that is no problem, i can migrate them to a multihoming active-active (LACP) or multihoming  active-standby EVPN setup. For the L3 connections i can also migrate them to an active-standby setup with VRRP.

    When i want to use the L3 connections in an active-active LACP setup i need to create a new evpn instance and move the L3 config on the subinterface to an IRB and the IRB has to be added to the VRF instance. Below the configuration for this:

    set routing-instances TEST-L3 protocols evpn
    set routing-instances TEST-L3 instance-type evpn
    set routing-instances TEST-L3 vlan-id 500
    set routing-instances TEST-L3 routing-interface irb.500
    set routing-instances TEST-L3 interface ae1.500
    set routing-instances TEST-L3 route-distinguisher 10.130.255.2:5500
    set routing-instances TEST-L3 vrf-target target:65400:5500

    set interfaces irb unit 500 description "*** TEST-L3 ***"
    set interfaces irb unit 500 family inet address 10.32.86.2/23 vrrp-group 3 virtual-address 10.32.86.1
    set interfaces irb unit 500 family inet address 10.32.86.2/23 vrrp-group 3 priority 120
    set interfaces irb unit 500 family inet address 10.32.86.2/23 vrrp-group 3 accept-data
    set interfaces irb unit 500 family inet address 10.32.86.2/23 vrrp-group 3 authentication-type md5
    set interfaces irb unit 500 family inet address 10.32.86.2/23 vrrp-group 3 authentication-key <key>

    set interfaces ae1 unit 500 description "*** L2 interface ***"
    set interfaces ae1 unit 500 encapsulation vlan-bridge
    set interfaces ae1 unit 500 vlan-id 500

    set routing-instances L3-VRF instance-type vrf
    set routing-instances L3-VRF interface irb.500
    set routing-instances L3-VRF route-distinguisher 10.130.255.2:10490
    set routing-instances L3-VRF vrf-target target:65400:10490
    set routing-instances L3-VRF vrf-table-label

    In this new setup i need to create an extra EVPN instance for the L3 subinterfaces icm with VRRP. Is this the correct configuration for this setup or is there another solution for this?


    kind regards,
    Pascal Lacroix

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    PASCAL LACROIX
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