Configure Optimization Replication

Draft comment: pputtasiddaiah
New for SLX OS 20.2.1. Please review the procedure and commands.

  1. Configure the IP fabric.
  2. On all fabric nodes, configure IP prefix-list for the Multicast Group address range you want to reserve and use with PIM-SSM to form MDT.
  3. Enable the following:
    • Router PIM under default VRF
    • PIM-SSM with prefix-list
    ip prefix-list mdt-range seq 5 permit 239.0.0.0/8
    !
    router pim vrf default-vrf
    ssm-enable range mdt-range
    !
  4. Enable PIM-SM on all Fabric links.
    interface Ethernet 0/6
    ip address 11.1.1.200/24
    ip pim-sparse
    no shutdown
    !
  5. On all leaf nodes, enable Optimized-Replication under Overlay-Gateway with the default MDT group.
    If a separate MDT is required for an EVPN domain, the MDT group address can be assigned to the associated VLAN/BD.
    SLX# show running-config overlay-gateway
    overlay-gateway tunnel
    ip interface Loopback 1
    map vni auto
    optimized-replication
    underlay-mdt-default-group 239.1.1.1
    underlay-mdt-group 239.1.1.103 vlan add 300
    underlay-mdt-group 239.1.1.110 vlan add 110
    underlay-mdt-group 239.1.1.200 bridge-domain add 1
    !
    activate
    !
  6. Optional: Remove Optimization Replication.
    # no optimized-replication

Example

# vlan 5
# vlan 6
# vlan 10
# vlan 11
# vlan 12
# vlan 20
# vlan 30
# vlan 40
# overlay-gateway 10
# type layer2-extension
# optimized-replication
# underlay-mdt-default-group 239.0.0.100 ! default MDT for all VNIs
# underlay-mdt-group 239.0.0.1 vlan add 10-12,20 ! shared MDT; but not the default
# underlay-mdt-group 239.0.0.3 vlan add 30 ! MDT dedicated to vlan 30
# underlay-mdt-group 239.0.0.4 vlan add 40
# underlay-mdt-group 239.0.0.5 bridge-domain add 50,60-70