• Author : Bharathram Pattabhiraman

 
 

Multicast EVPN IRB

Description This solution allows delivery of multicast traffic in an IP-VRF using multicast in the underlay network. It builds on top of [L2-EVPN], adding support for L3 VPNs and Integrated Routing and Bridging (IRB).  The protocol used to build multicast trees in the underlay network is PIM Sparse Mode. In the figure above: VLAN 10 and VLAN 20 have SVIs provisioned on all VTEPs and are associated with the L3 VRF red. There are interested receivers in VLANs 10 and 20 on VTEP2, and in VLAN 20 on VTEP 3. Traffic arriving in VLAN 10 on VTEP 1 is: Delivered...
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Layer 2 Multicast EVPN

Description This solution allows the delivery of customer BUM (Broadcast, Unknown unicast and Multicast) traffic in a VLAN using multicast in the underlay network. BUM traffic can be classified into two traffic types: Flooded Traffic: This is broadcast, unknown unicast, and link-local multicast traffic, which is flooded to all VTEPs Multicast Traffic: This traffic is sent to VTEPs with interested receivers. The solution implements the procedures described in [IGMP PROXY], which use a BGP EVPN control plane and a VXLAN forwarding plane. Using multicast in the underlay network (as opposed to unicast) has the advantage of being bandwidth efficient. The...
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