Traffic handling for EVPN E-tree
AssigneeArista Networks, Inc.
InventorsAkhil Shashidhar, Aaron David Bamberger
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Abstract
An EVPN network device may advertise an EVPN IMET (type-3) route in a corresponding message to one or more peer EVPN network devices. The EVPN IMET route advertisement message may include an E-tree extended community indicating a leaf or root designation of a locally attached site at the advertising EVPN network device. The inclusion of the E-tree extended community in the EVPN IMET route advertisement message may provide desired traffic handling for implementing an EVPN E-tree service such as handling of BUM traffic.
Claims20
A method of conveying Ethernet Virtual Private Network (EVPN) routing information, the method comprising:
- advertising, by an EVPN network device, an EVPN Inclusive Multicast Ethernet Tag (IMET) route toward one or more peer EVPN network devices,
- wherein the EVPN IMET route contains an Ethernet-tree (E-tree) extended community.
A method of operating an Ethernet Virtual Private Network (EVPN) Ethernet-tree (E-tree) network device coupled to one or more peer EVPN E-tree network devices via an underlay network, the method comprising:
- receiving, by the EVPN E-tree network device, local broadcast, unknown unicast, or multicast (BUM) traffic from a local site;
- and
- prior to conveying the BUM traffic to at least some of the one or more peer EVPN E-tree network devices, performing ingress filtering of the BUM traffic at the EVPN E-tree network device based on EVPN Inclusive Multicast Ethernet Tag (IMET) route messages.
A method of operating an Ethernet Virtual Private Network (EVPN) Ethernet-tree (E-tree) network device coupled to a peer EVPN E-tree network device via an underlay network, the method comprising:
- receiving, by the EVPN E-tree network device, an EVPN Inclusive Multicast Ethernet Tag (IMET) route advertisement from the peer EVPN E-tree network device;
- sending, by the EVPN E-tree network device, a message for admittance to a multicast group for the peer EVPN E-tree network device based on the received EVPN IMET route advertisement;
- and
- receiving traffic generated by multicast replication within the underlay network based on the admittance to the multicast group.
Dependencies are inferred from the claim text.