Abstract: Techniques for split-horizon filtering for EVPN-VXLANs are described. For example, an egress provider edge (PE) device is configured to apply split-horizon filtering to a BUM packet received from an intermediate network if the BUM packet includes a split-horizon identifier advertised by the egress PE device. As one example, the PE device encapsulates the split-horizon identifier within a tagging packet frame, such as a tagging packet frame in accordance with the 802.1Q tag format comprising a Tag Protocol Identifier (TPID). An ingress PE device receives the split-horizon identifier advertised by the egress PE device and is configured to encapsulate the split-horizon identifier within a BUM packet received from the Ethernet segment, and send the encapsulated packet into the intermediate network towards the egress PE device. In this way, when egress PE device receives the encapsulated packet including the split-horizon identifier, the egress PE device performs split-horizon filtering on the packet.

Abstract: In general, techniques are described for provisioning Quality of Service (QoS) behavior on tunnel endpoints. For example, a network device operating as a source tunnel endpoint, e.g., a provider edge (PE) device, may encapsulate a QoS behavior that was derived by the PE device upon receiving the packet from a source network (e.g., a customer or tenant network) and send the encapsulated packet through the tunnel across one or more intermediate networks (such as data center networks) to the destination tunnel endpoint such that the destination tunnel endpoint may apply the same QoS behavior derived by the source tunnel endpoint when injecting the original packet into a destination network (e.g., a second network of the customer or tenant) without having to re-derive the QoS behavior from customer/tenant QoS policies for the destination network.