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Diffstat (limited to 'docs/configuration/interfaces/bonding.rst')
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1 files changed, 48 insertions, 1 deletions
diff --git a/docs/configuration/interfaces/bonding.rst b/docs/configuration/interfaces/bonding.rst index a22d3ccb..27f1bbed 100644 --- a/docs/configuration/interfaces/bonding.rst +++ b/docs/configuration/interfaces/bonding.rst @@ -291,6 +291,54 @@ Port Mirror (SPAN) :var1: bond1 :var2: eth3 +EVPN Multihoming +---------------- + +All-Active Multihoming is used for redundancy and load sharing. Servers are +attached to two or more PEs and the links are bonded (link-aggregation). +This group of server links is referred to as an :abbr:`ES (Ethernet Segment)`. + +An Ethernet Segment can be configured by specifying a system-MAC and a local +discriminator or a complete ESINAME against the bond interface on the PE. + +.. cfgcmd:: set interfaces bonding <interface> evpn es-id <<1-16777215|10-byte ID> +.. cfgcmd:: set interfaces bonding <interface> evpn es-sys-mac <xx:xx:xx:xx:xx:xx> + + The sys-mac and local discriminator are used for generating a 10-byte, Type-3 + Ethernet Segment ID. ESINAME is a 10-byte, Type-0 Ethernet Segment ID - + "00:AA:BB:CC:DD:EE:FF:GG:HH:II". + + Type-1 (EAD-per-ES and EAD-per-EVI) routes are used to advertise the locally + attached ESs and to learn off remote ESs in the network. Local Type-2/MAC-IP + routes are also advertised with a destination ESI allowing for MAC-IP syncing + between Ethernet Segment peers. Reference: RFC 7432, RFC 8365 + + EVPN-MH is intended as a replacement for MLAG or Anycast VTEPs. In multihoming + each PE has an unique VTEP address which requires the introduction of a new + dataplane construct, MAC-ECMP. Here a MAC/FDB entry can point to a list of + remote PEs/VTEPs. + +.. cfgcmd:: set interfaces bonding <interface> evpn es-df-pref <1-65535> + + Type-4 (ESR) routes are used for Designated Forwarder (DF) election. + DFs forward BUM traffic received via the overlay network. This + implementation uses a preference based DF election specified by + draft-ietf-bess-evpn-pref-df. + + The DF preference is configurable per-ES. + + BUM traffic is rxed via the overlay by all PEs attached to a server but + only the DF can forward the de-capsulated traffic to the access port. + To accommodate that non-DF filters are installed in the dataplane to drop + the traffic. + + Similarly traffic received from ES peers via the overlay cannot be forwarded + to the server. This is split-horizon-filtering with local bias. + +.. cmdinclude:: /_include/interface-evpn-uplink.txt + :var0: bonding + :var1: bond0 + ******* Example ******* @@ -595,4 +643,3 @@ Operation Partner Churn State: churned Actor Churned Count: 1 Partner Churned Count: 1 - |