Multi-homed network in EVPN

Document Type Expired Internet-Draft (individual)
Authors Hao Weiguo  , Li Yizhou  , Pei Xu
Last updated 2013-12-19 (latest revision 2013-06-17)
Replaces draft-hao-evpn-mhn
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Expired & archived
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


To enhance the reliability, bridged network is normally multi-homed to an EVPN network, there are two categories of mechanisms to avoid the layer 2 traffic loop. The first category does not require the PEs participating in the control protocol of the bridged network, while the second category requires that. [EVPN] described one of the first category mechanisms called designated forwarder (DF) election to achieve loop avoidance and vlan-based load balancing. This draft mainly focuses on the second category of mechanisms which can achieve intra-vlan MAC-based load balancing. MAC-based VLAN balancing is more applicable than DF election mechanism if all end stations in bridged network are on the same VLAN which can cause traffic congestion in DF link.


Hao Weiguo (
Li Yizhou (
Pei Xu (

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