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In PICOS EVPN multihoming, there are two ways to forward BUM messages: . You can choose one of these to apply to your EVPN fabric.

  • Head End Replication. This is the default way which needs no PIM configurations. The BUM message will be encapsulated and sent to all outgoing ports VTEPs of the same VNI by the access VTEP.
  • BUM tunnel. All VTEPs of the same VNI join the same multicast group, and use multicast routing protocol PIM to establish a multicast forwarding table entry for the multicast group. This method can reduce the traffic flooding caused by the head end replication of the BUM messages. This way needs extral to configure PIM configurationsprotocol.

EVPN Multihoming with Head End Replication

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Code Block
admin@Leaf1# set protocols bgp local-as 65001
admin@Leaf1# set protocols bgp router-id 10.226.14.207
admin@Leaf1# set protocols bgp neighbor 10.226.14.48 remote-as internal
admin@Leaf1# set protocols bgp neighbor 10.226.14.48 update-source 10.226.14.207
admin@Leaf1# set protocols bgp neighbor 10.226.14.48 evpn activate true
admin@Leaf1# set protocols bgp neighbor 10.226.14.208 remote-as internal
admin@Leaf1# set protocols bgp neighbor 10.226.14.208 update-source 10.226.14.207
admin@Leaf1# set protocols bgp neighbor 10.226.14.208 evpn activate true
admin@Leaf1# set protocols bgp neighbor 10.226.14.24 remote-as internal
admin@Leaf1# set protocols bgp neighbor 10.226.14.24 update-source 10.226.14.207
admin@Leaf1# set protocols bgp neighbor 10.226.14.24 evpn activate true
admin@Leaf1# set protocols bgp ipv4-unicast
admin@Leaf1# set protocols bgp evpn advertise-all-vni
admin@Leaf1# set protocols bgp evpn advertise ipv4-unicast
admin@Leaf1# set protocols bgp evpn advertise ipv6-unicast
admin@Leaf1# set protocols bgp evpn advertise-svi-ip
admin@Leaf1# set protocols bgp vrf vrf1 local-as 65001
admin@Leaf1# set protocols bgp vrf vrf1 router-id 17.17.17.17
admin@Leaf1# set protocols bgp vrf vrf1 evpn advertise ipv4-unicast
admin@Leaf1# set protocols bgp vrf vrf1 evpn advertise ipv6-unicast
admin@Leaf1# set protocols evpn mh
admin@Leaf1# set protocols evpn mh redirect-off 
admin@Leaf1# set protocols lldp enable true

Step7. Configure OSPF.

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Code Block
admin@Leaf2# set interface aggregate-ethernet ae1 aggregated-ether-options lacp enable true
admin@Leaf2# set interface aggregate-ethernet ae2 aggregated-ether-options lacp enable true
admin@Leaf2# set interface aggregate-ethernet ae1 family ethernet-switching port-mode trunk
admin@Leaf2# set interface aggregate-ethernet ae1 family ethernet-switching vlan members 30
admin@Leaf2# set interface aggregate-ethernet ae1 family ethernet-switching vlan members 20
admin@Leaf2# set interface aggregate-ethernet ae1 evpn mh es-id 4
admin@Leaf2# set interface aggregate-ethernet ae1 evpn mh es-sys-mac 00:22:22:22:22:22
admin@Leaf2# set interface aggregate-ethernet ae2 family ethernet-switching port-mode "trunk"
admin@Leaf2# set interface aggregate-ethernet ae2 family ethernet-switching vlan members 30
admin@Leaf2# set interface aggregate-ethernet ae2 family ethernet-switching vlan members 20
admin@Leaf2# set interface aggregate-ethernet ae2 evpn mh es-id 2
admin@Leaf2# set interface aggregate-ethernet ae2 evpn mh es-sys-mac 00:22:22:22:22:22
admin@Leaf2# set interface gigabit-ethernet te-1/1/17 mtu 3000
admin@Leaf2# set interface gigabit-ethernet te-1/1/17 family ethernet-switching native-vlan-id 4014
admin@Leaf2# set interface gigabit-ethernet te-1/1/19 mtu 3000
admin@Leaf2# set interface gigabit-ethernet te-1/1/19 family ethernet-switching native-vlan-id 4013
admin@Leaf2# set interface gigabit-ethernet te-1/1/21 ether-options 802.3ad ae2
admin@Leaf2# set interface gigabit-ethernet te-1/1/23 ether-options 802.3ad ae1
admin@Leaf2# set interface ethernet-switching-options
admin@Leaf2# set ip routing enable true
admin@Leaf2# set ip vrf vrf1
admin@Leaf2# set l3-interface loopback lo address 10.226.14.253 prefix-length 32
admin@Leaf2# set l3-interface loopback vrf1 address 26.26.26.26 prefix-length 32
admin@Leaf2# set l3-interface vlan-interface vlan4013 address 10.226.15.25 prefix-length 30
admin@Leaf2# set l3-interface vlan-interface vlan4014 address 10.226.15.81 prefix-length 30
admin@Leaf2# set l3-interface vlan-interface vlan4094 address 10.226.13.25 prefix-length 30
admin@Leaf2# set l3-interface vlan-interface vlan99 vrf vrf1
admin@Leaf2# set l3-interface vlan-interface vlan20 vrf vrf1
admin@Leaf2# set l3-interface vlan-interface vlan20 address 192.168.0.3 prefix-length 24
admin@Leaf2# set l3-interface vlan-interface vlan20 address 2002:0:0:1::3 prefix-length 64
admin@Leaf2# set l3-interface vlan-interface vlan30 vrf vrf1
admin@Leaf2# set l3-interface vlan-interface vlan30 address 172.168.0.3 prefix-length 24
admin@Leaf2# set l3-interface vlan-interface vlan30 address 2003:0:0:1::3 prefix-length 64
admin@Leaf2# set l3-interface vlan-interface vlan20 router-mac 00:00:20:00:00:FE
admin@Leaf2# set l3-interface vlan-interface vlan30 router-mac 00:00:30:00:00:FE
admin@Leaf2# set protocols bgp local-as 65001
admin@Leaf2# set protocols bgp router-id 10.226.14.208
admin@Leaf2# set protocols bgp neighbor 10.226.14.48 remote-as internal
admin@Leaf2# set protocols bgp neighbor 10.226.14.48 update-source 10.226.14.208
admin@Leaf2# set protocols bgp neighbor 10.226.14.48 evpn activate true
admin@Leaf2# set protocols bgp neighbor 10.226.14.207 remote-as internal
admin@Leaf2# set protocols bgp neighbor 10.226.14.207 update-source 10.226.14.208
admin@Leaf2# set protocols bgp neighbor 10.226.14.207 evpn activate true
admin@Leaf2# set protocols bgp neighbor 10.226.14.24 remote-as internal
admin@Leaf2# set protocols bgp neighbor 10.226.14.24 update-source 10.226.14.208
admin@Leaf2# set protocols bgp neighbor 10.226.14.24 evpn activate true
admin@Leaf2# set protocols bgp ipv4-unicast
admin@Leaf2# set protocols bgp evpn advertise-all-vni
admin@Leaf2# set protocols bgp evpn advertise ipv4-unicast
admin@Leaf2# set protocols bgp evpn advertise ipv6-unicast
admin@Leaf2# set protocols bgp evpn advertise-svi-ip
admin@Leaf2# set protocols bgp vrf vrf1 local-as 65001
admin@Leaf2# set protocols bgp vrf vrf1 router-id 26.26.26.26
admin@Leaf2# set protocols bgp vrf vrf1 evpn advertise ipv4-unicast
admin@Leaf2# set protocols bgp vrf vrf1 evpn advertise ipv6-unicast 
admin@Leaf2# set protocols evpn mh
admin@Leaf2# set protocols evpn mh redirect-off
admin@Leaf2# set protocols lldp enable true
admin@Leaf2# set protocols ospf router-id 110.110.110.110
admin@Leaf2# set protocols ospf network 10.226.15.24/30 area 0.0.0.0
admin@Leaf2# set protocols ospf network 10.226.15.80/30 area 0.0.0.0
admin@Leaf2# set protocols ospf network 10.226.14.208/32 area 0.0.0.0
admin@Leaf2# set protocols ospf network 10.226.14.253/32 area 0.0.0.0
admin@Leaf2# set vlans vlan-id 20 l3-interface vlan20
admin@Leaf2# set vlans vlan-id 30 l3-interface vlan30
admin@Leaf2# set vlans vlan-id 99 l3-interface vlan99
admin@Leaf2# set vlans vlan-id 4013 l3-interface vlan4013
admin@Leaf2# set vlans vlan-id 4014 l3-interface vlan4014
admin@Leaf2# set vlans vlan-id 4094 l3-interface vlan4094
admin@Leaf2# set vxlans source-interface lo address 10.226.14.253
admin@Leaf2# set vxlans vni 10030 decapsulation mode service-vlan-per-port
admin@Leaf2# set vxlans vni 10030 vlan 30
admin@Leaf2# set vxlans vni 10030 arp-nd-suppress disable false
admin@Leaf2# set vxlans vni 10020 decapsulation mode service-vlan-per-port
admin@Leaf2# set vxlans vni 10020 vlan 20
admin@Leaf2# set vxlans vni 10020 arp-nd-suppress disable false
admin@Leaf2# set vxlans vni 99 vlan 99
admin@Leaf2# set vxlans vrf vrf1 l3-vni 99
admin@Leaf2# commit

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Code Block
admin@Leaf3# set interface aggregate-ethernet ae1 aggregated-ether-options lacp enable true
admin@Leaf3# set interface aggregate-ethernet ae2 aggregated-ether-options lacp enable true
admin@Leaf3# set interface aggregate-ethernet ae1 family ethernet-switching port-mode trunk
admin@Leaf3# set interface aggregate-ethernet ae1 family ethernet-switching vlan members 30
admin@Leaf3# set interface aggregate-ethernet ae1 family ethernet-switching vlan members 20
admin@Leaf3# set interface aggregate-ethernet ae1 evpn mh es-id 3
admin@Leaf3# set interface aggregate-ethernet ae1 evpn mh es-sys-mac 00:00:00:22:22:22
admin@Leaf3# set interface aggregate-ethernet ae2 family ethernet-switching port-mode trunk
admin@Leaf3# set interface aggregate-ethernet ae2 family ethernet-switching vlan members 30
admin@Leaf3# set interface aggregate-ethernet ae2 family ethernet-switching vlan members 20
admin@Leaf3# set interface aggregate-ethernet ae2 evpn mh es-id 1
admin@Leaf3# set interface aggregate-ethernet ae2 evpn mh es-sys-mac 00:00:00:22:22:22
admin@Leaf3# set interface gigabit-ethernet ge-1/1/3 mtu 3000
admin@Leaf3# set interface gigabit-ethernet ge-1/1/3 family ethernet-switching native-vlan-id 4016
admin@Leaf3# set interface gigabit-ethernet ge-1/1/5 mtu 3000
admin@Leaf3# set interface gigabit-ethernet ge-1/1/5 family ethernet-switching native-vlan-id 3012
admin@Leaf3# set interface gigabit-ethernet ge-1/1/21 ether-options 802.3ad ae1
admin@Leaf3# set interface gigabit-ethernet ge-1/1/22 ether-options 802.3ad ae2
admin@Leaf3# set interface ethernet-switching-options
admin@Leaf3# set ip routing enable true
admin@Leaf3# set ip vrf vrf1
admin@Leaf3# set l3-interface loopback lo address 10.226.14.24 prefix-length 32
admin@Leaf3# set l3-interface loopback lo address 10.226.14.201 prefix-length 32
admin@Leaf3# set l3-interface vlan-interface vlan3011 address 10.226.0.98 prefix-length 30
admin@Leaf3# set l3-interface vlan-interface vlan3012 address 10.226.0.94 prefix-length 30
admin@Leaf3# set l3-interface vlan-interface vlan99 vrf vrf1
admin@Leaf3# set l3-interface vlan-interface vlan20 vrf vrf1
admin@Leaf3# set l3-interface vlan-interface vlan20 address 192.168.0.3 prefix-length 24
admin@Leaf3# set l3-interface vlan-interface vlan20 address 2002:0:0:1::3 prefix-length 64
admin@Leaf3# set l3-interface vlan-interface vlan30 vrf vrf1
admin@Leaf3# set l3-interface vlan-interface vlan30 address 172.168.0.3 prefix-length 24
admin@Leaf3# set l3-interface vlan-interface vlan30 address 2003:0:0:1::3 prefix-length 64
admin@Leaf3# set l3-interface vlan-interface vlan20 router-mac 00:00:20:00:00:FE
admin@Leaf3# set l3-interface vlan-interface vlan30 router-mac 00:00:30:00:00:FE
admin@Leaf3# set protocols bgp local-as 65001
admin@Leaf3# set protocols bgp router-id 10.226.14.24
admin@Leaf3# set protocols bgp neighbor 10.226.14.207 remote-as internal
admin@Leaf3# set protocols bgp neighbor 10.226.14.207 timers delayopen 60
admin@Leaf3# set protocols bgp neighbor 10.226.14.207 update-source "10.226.14.24"
admin@Leaf3# set protocols bgp neighbor 10.226.14.207 evpn activate true
admin@Leaf3# set protocols bgp neighbor 10.226.14.208 remote-as "internal"
admin@Leaf3# set protocols bgp neighbor 10.226.14.208 timers delayopen 60
admin@Leaf3# set protocols bgp neighbor 10.226.14.208 update-source 10.226.14.24
admin@Leaf3# set protocols bgp neighbor 10.226.14.208 evpn activate true
admin@Leaf3# set protocols bgp neighbor 10.226.14.48 remote-as internal
admin@Leaf3# set protocols bgp neighbor 10.226.14.48 timers delayopen 60
admin@Leaf3# set protocols bgp neighbor 10.226.14.48 update-source 10.226.14.24
admin@Leaf3# set protocols bgp neighbor 10.226.14.48 evpn activate true
admin@Leaf3# set protocols bgp ipv4-unicast
admin@Leaf3# set protocols bgp evpn advertise-all-vni
admin@Leaf3# set protocols bgp evpn advertise ipv4-unicast
admin@Leaf3# set protocols bgp evpn advertise ipv6-unicast
admin@Leaf3# set protocols bgp evpn advertise-svi-ip
admin@Leaf3# set protocols evpn mh
admin@Leaf3# set protocols evpn mh redirect-off 
admin@Leaf3# set protocols lldp enable true
admin@Leaf3# set protocols ospf router-id 24.24.24.24
admin@Leaf3# set protocols ospf network 10.226.0.96/30 area 0.0.0.0
admin@Leaf3# set protocols ospf network 10.226.0.92/30 area 0.0.0.0
admin@Leaf3# set protocols ospf network 10.226.14.201/32 area 0.0.0.0
admin@Leaf3# set protocols ospf network 10.226.14.24/32 area 0.0.0.0
admin@Leaf3# set vlans vlan-id 20 l3-interface vlan20
admin@Leaf3# set vlans vlan-id 30 l3-interface vlan30
admin@Leaf3# set vlans vlan-id 99 l3-interface vlan99
admin@Leaf3# set vlans vlan-id 3012 l3-interface vlan3012
admin@Leaf3# set vlans vlan-id 4016 l3-interface vlan4016
admin@Leaf3# set vxlans source-interface lo address 10.226.14.201
admin@Leaf3# set vxlans vni 10020 decapsulation mode service-vlan-per-port
admin@Leaf3# set vxlans vni 10020 vlan 20
admin@Leaf3# set vxlans vni 10020 arp-nd-suppress disable false
admin@Leaf3# set vxlans vni 10030 decapsulation mode service-vlan-per-port
admin@Leaf3# set vxlans vni 10030 vlan 30
admin@Leaf3# set vxlans vni 10030 arp-nd-suppress disable false
admin@Leaf3# set vxlans vni 99 vlan 99
admin@Leaf3# set vxlans traceoptions flag all disable false
admin@Leaf3# set vxlans vrf vrf1 l3-vni 99
admin@Leaf3# commit

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Code Block
admin@Leaf4# set interface aggregate-ethernet ae1 aggregated-ether-options lacp enable true
admin@Leaf4# set interface aggregate-ethernet ae2 aggregated-ether-options lacp enable true
admin@Leaf4# set interface aggregate-ethernet ae1 family ethernet-switching port-mode trunk
admin@Leaf4# set interface aggregate-ethernet ae1 family ethernet-switching vlan members 30
admin@Leaf4# set interface aggregate-ethernet ae1 family ethernet-switching vlan members 20
admin@Leaf4# set interface aggregate-ethernet ae1 evpn mh es-id 1
admin@Leaf4# set interface aggregate-ethernet ae1 evpn mh es-sys-mac 00:00:00:22:22:22
admin@Leaf4# set interface aggregate-ethernet ae2 mtu 3000
admin@Leaf4# set interface aggregate-ethernet ae2 family ethernet-switching port-mode trunk
admin@Leaf4# set interface aggregate-ethernet ae2 family ethernet-switching vlan members 30
admin@Leaf4# set interface aggregate-ethernet ae2 family ethernet-switching vlan members 20
admin@Leaf4# set interface aggregate-ethernet ae2 evpn mh es-id 3
admin@Leaf4# set interface aggregate-ethernet ae2 evpn mh es-sys-mac 00:00:00:22:22:22
admin@Leaf4# set interface gigabit-ethernet ge-1/1/3 mtu 3000
admin@Leaf4# set interface gigabit-ethernet ge-1/1/3 family ethernet-switching native-vlan-id 3011
admin@Leaf4# set interface gigabit-ethernet ge-1/1/5 mtu 3000
admin@Leaf4# set interface gigabit-ethernet ge-1/1/5 family ethernet-switching native-vlan-id 3012
admin@Leaf4# set interface gigabit-ethernet ge-1/1/21 ether-options 802.3ad ae1
admin@Leaf4# set interface gigabit-ethernet ge-1/1/22 ether-options 802.3ad ae2
admin@Leaf4# set ip routing enable true
admin@Leaf4# set ip vrf vrf1
admin@Leaf4# set l3-interface loopback lo address 10.226.14.202 prefix-length 32
admin@Leaf4# set l3-interface loopback lo address 10.226.14.48 prefix-length 32
admin@Leaf4# set l3-interface loopback vrf1 address 48.48.48.48 prefix-length 32
admin@Leaf4# set l3-interface vlan-interface vlan3011 address 10.226.15.70 prefix-length 30
admin@Leaf4# set l3-interface vlan-interface vlan3012 address 10.226.15.78 prefix-length 30
admin@Leaf4# set l3-interface vlan-interface vlan99 vrf vrf1
admin@Leaf4# set l3-interface vlan-interface vlan20 vrf vrf1
admin@Leaf4# set l3-interface vlan-interface vlan20 address 192.168.0.3 prefix-length 24
admin@Leaf4# set l3-interface vlan-interface vlan20 address 2002:0:0:1::3 prefix-length 64
admin@Leaf4# set l3-interface vlan-interface vlan30 vrf vrf1
admin@Leaf4# set l3-interface vlan-interface vlan30 address 172.168.0.3 prefix-length 24
admin@Leaf4# set l3-interface vlan-interface vlan30 address 2003:0:0:1::3 prefix-length 64
admin@Leaf4# set l3-interface vlan-interface vlan20 router-mac 00:00:20:00:00:FE
admin@Leaf4# set l3-interface vlan-interface vlan30 router-mac 00:00:30:00:00:FE
admin@Leaf4# set protocols bgp local-as 65001
admin@Leaf4# set protocols bgp router-id 10.226.14.48
admin@Leaf4# set protocols bgp neighbor 10.226.14.207 remote-as internal
admin@Leaf4# set protocols bgp neighbor 10.226.14.207 update-source 10.226.14.48
admin@Leaf4# set protocols bgp neighbor 10.226.14.207 evpn activate true
admin@Leaf4# set protocols bgp neighbor 10.226.14.208 remote-as internal
admin@Leaf4# set protocols bgp neighbor 10.226.14.208 update-source 10.226.14.48
admin@Leaf4# set protocols bgp neighbor 10.226.14.208 evpn activate true
admin@Leaf4# set protocols bgp neighbor 10.226.14.24 remote-as internal
admin@Leaf4# set protocols bgp neighbor 10.226.14.24 update-source 10.226.14.48
admin@Leaf4# set protocols bgp neighbor 10.226.14.24 evpn activate true
admin@Leaf4# set protocols bgp ipv4-unicast
admin@Leaf4# set protocols bgp evpn advertise-all-vni
admin@Leaf4# set protocols bgp evpn advertise ipv4-unicast
admin@Leaf4# set protocols bgp evpn advertise ipv6-unicast
admin@Leaf4# set protocols bgp evpn advertise-svi-ip
admin@Leaf4# set protocols bgp vrf vrf1 local-as 65001
admin@Leaf4# set protocols bgp vrf vrf1 router-id 48.48.48.48
admin@Leaf4# set protocols bgp vrf vrf1 evpn advertise ipv4-unicast
admin@Leaf4# set protocols bgp vrf vrf1 evpn advertise ipv6-unicast
admin@Leaf4# set protocols evpn mh startup-delay 60
admin@Leaf4# set protocols evpn mh redirect-off
admin@Leaf4# set protocols lldp enable true
admin@Leaf4# set protocols ospf router-id 48.48.48.48
admin@Leaf4# set protocols ospf network 10.226.14.202/32 area 0.0.0.0
admin@Leaf4# set protocols ospf network 10.226.14.48/32 area 0.0.0.0
admin@Leaf4# set protocols ospf network 10.226.15.68/30 area 0.0.0.0
admin@Leaf4# set protocols ospf network 10.226.15.76/30 area 0.0.0.0
admin@Leaf4# set vlans vlan-id 20 l3-interface vlan20
admin@Leaf4# set vlans vlan-id 30 l3-interface vlan30
admin@Leaf4# set vlans vlan-id 99 l3-interface vlan99
admin@Leaf4# set vlans vlan-id 3011 l3-interface vlan3011
admin@Leaf4# set vlans vlan-id 3012 l3-interface vlan3012
admin@Leaf4# set vxlans source-interface lo address 10.226.14.202
admin@Leaf4# set vxlans vni 10020 decapsulation mode service-vlan-per-port
admin@Leaf4# set vxlans vni 10020 vlan 20
admin@Leaf4# set vxlans vni 10020 arp-nd-suppress disable false
admin@Leaf4# set vxlans vni 10030 decapsulation mode service-vlan-per-port
admin@Leaf4# set vxlans vni 10030 vlan 30
admin@Leaf4# set vxlans vni 10030 arp-nd-suppress disable false
admin@Leaf4# set vxlans vni 99 vlan 99
admin@Leaf4# set vxlans vrf vrf1 l3-vni 99
admin@Leaf4# commit

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EVPN Multihoming with BUM Tunnel

To For the topology and figure in the last section, to enable EVPN multihoming with BUM tunnel, besides above configurations of head end replication, we need to add the following configurations:

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In addition to the above show command to verify the results, you can also use the run show vxlan mcast-tunnel VNIvni command to view the establishment of the BUM tunnel.

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