BUM traffic handling for EVPN E-tree via network convergence
AssigneeArista Networks, Inc.
InventorsAkhil Shashidhar, Aaron David Bamberger
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Abstract
An EVPN device may convey broadcast, unknown unicast, or multicast (BUM) traffic to one or more peer EVPN devices. Leaf-sourced BUM traffic may be dropped. After the network configuration for (known) unicast traffic has resolved, unicast versions of the BUM traffic may be appropriately forwarded to provide EVPN E-Tree service.
Claims20
A method of conveying network traffic to provide Ethernet Virtual Private Network (EVPN) Ethernet-Tree (E-Tree) service, the method comprising:
- receiving broadcast, unknown unicast, or multicast (BUM) traffic sourced from a root-designated end host in a Virtual Local Area Network (VLAN);
- dropping the BUM traffic to prevent forwarding of the BUM traffic toward at least a leaf-designated end host in the VLAN;
- after dropping the BUM traffic, configuring a bridge table to include an entry associated with the leaf-designated end host;
- and
- after configuring the bridge table, forwarding a known unicast version of the BUM traffic sourced from the root-designated end host and destined for the leaf-designated end host.
A network device configured as an egress edge network device and configured to provide Ethernet Virtual Private Network (EVPN) Ethernet-Tree (E-Tree) service, the network device comprising:
- memory circuitry;
- and
- one or more processors coupled to the memory circuitry and configured to:
- receive, from an ingress edge network device, broadcast, unknown unicast, or multicast (BUM) traffic sourced from a root-designated end host in a Virtual Local Area Network (VLAN);
- drop the BUM traffic to prevent forwarding of the BUM traffic toward at least a leaf-designated end host in the VLAN;
- configure a bridge table on the ingress edge network device to include an entry associated with the leaf-designated end host;
- receive, from the ingress edge network device, a known unicast version of the BUM traffic sourced from the root-designated end host and destined for the leaf-designated end host;
- and
- forward the received known unicast version of the BUM traffic.
A network device configured as an ingress edge network device and configured to provide Ethernet Virtual Private Network (EVPN) Ethernet-Tree (E-Tree) service, the network device comprising:
- memory circuitry;
- and
- one or more processors coupled to the memory circuitry and configured to:
- receive broadcast, unknown unicast, or multicast (BUM) traffic sourced from a root-designated end host in a Virtual Local Area Network (VLAN);
- drop the BUM traffic to prevent forwarding of the BUM traffic toward at least a leaf-designated end host in the VLAN;
- configure a bridge table on the memory circuitry to include an entry associated with the leaf-designated end host;
- and
- forward a known unicast version of the BUM traffic toward an egress edge network device based on the entry associated with the leaf-designated end host, wherein the known unicast version of the BUM traffic is sourced from the root-designated end host and destined for the leaf-designated end host.
Dependencies are inferred from the claim text.