Juniper Networks, Inc.

Ramesh Kandula

Vikram Nagarajan

Kapil Arora

Princy T Elizabeth

Robert W Kebler

Soumyodeep Joarder

Nitin Kumar

Wen Lin

Liang Zhang

SelvaKumar Sivaraj

Santosh Pallagatti Kotrabasappa

Nitin Singh

Sunanda L Kommula

Naveen Ashik

Surya Nimmagadda

Techniques are described for facilitating node protection for Broadcast, unknown Unicast, and Multicast (BUM) traffic for a multi-homed node failure. For example, each VTEP (e.g., PE device) may advertise a protected VTEP address that indicates an IP address of a remote PE device that is to be protected in the event of a node failure. In the event a multi-homed PE device fails, the ingress PE device sends a BUM packet including the protected VTEP address for the failed node. When an egress PE device receives the BUM packet, the egress PE device determines whether the BUM packet includes the protected VTEP address and whether the egress PE device is operating as a backup designated forwarder (DF). If the BUM packet includes the protected VTEP address and the egress PE device is a backup DF, the egress PE device forwards the BUM traffic to the ESI.

Node protection for bum traffic for multi-homed node failure

Techniques are described for facilitating node protection for Broadcast, unknown Unicast, and Multicast (BUM) traffic for a multi-homed node failure. For example, multi-homed provider edge (PE) devices each advertise egress node protection labels to an ingress PE device. In the event one of the multi-homed PE devices fails, the ingress PE device sends a BUM packet including the egress node protection labels for the failed node. When an egress PE device receives the BUM packet, the egress PE device determines whether the BUM packet includes the egress node protection labels and whether the egress PE device is operating as a backup designated forwarder (DF) on an Ethernet segment identifier (ESI) for which the failed node was the DF. If the BUM packet includes the egress node protection labels and the egress PE device is operating as a backup DF, the egress PE device forwards the BUM traffic to the ESI.

A device may receive a plurality of traffic flows to be provided to a set of destination devices. The device may process the plurality of traffic flows to identify respective sets of attributes associated with the plurality of traffic flows. The device may assign one of a plurality of traffic forwarding techniques, to a first traffic flow, of the plurality of traffic flows, based on the respective sets of attributes associated with the plurality of traffic flows. The device may provide the plurality of traffic flows to the set of destination devices. The device may determine that a condition, of a set of conditions associated with the plurality of traffic flows, has been satisfied in association with providing the plurality of traffic flows to the set of destination devices. The device may perform a set of actions after determining that the condition has been satisfied.

Dynamically providing traffic via various packet forwarding techniques

In general, techniques of this disclosure may enable a remote provider edge (PE) router to improve convergence time in response to a link failure in an Ethernet Virtual Private Network (EVPN) by establishing per-Ethernet Segment Identifier (ESI) Bidirectional Forwarding Detection (BFD) sessions with other PE routers that are coupled to the PE router in an EVPN. The remote PE may determine that at least two PE routers with the remote PE are locally connected to a multi-homed customer network by a particular Ethernet Segment. The remote PE may send, based on determining that the at least two PE routers are connected to the multi-homed customer network by the particular Ethernet Segment, an ESI Ping request packet through the intermediate network to one of the at least two PE routers, wherein the ESI Ping request packet includes at least a BFD discriminator and an ESI for the particular Ethernet Segment.

Fast convergence of EVPN networks for multi homing topologies

In general, techniques are described for performing packet loss measurement in a distributed data plane. In one example, a local router includes a plurality of forwarding units that implement a distributed data plane. First and second forwarding units may switch layer two (L2) packet data units (PDUs) between the local router and a remote router using a virtual path. The first and second forwarding may unit may increment, in response to processing any PDU of the PDUs for the virtual path, respective counters stored by the first and second forwarding units. The first and second forwarding units may update, based on the respective counters, a loss-measurement packet (LMP). For instance, the first forwarding unit, upon updating the LMP, may internally forward the LMP to the second forwarding unit. The second forwarding unit, upon updating the LMP, may send the LMP to the remote router.

Packet loss measurement in a distributed data plane

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Bengaluru, India

Ramesh Kandula