Coordinating gateways for multi-destination traffic across a TRILL fabric and a VXLAN/IP fabric with a plurality of TRILL IS-IS TLVs and a plurality of Layer 3 IS-IS TLVs is provided herein. The plurality of TRILL IS-IS TLVs and the plurality of Layer 3 IS-IS TLVs effectuate: grafting an IP multicast share tree with a plurality of TRILL distribution trees at only one of a plurality of gateways in a network interworking a TRILL fabric and a VXLAN/IP fabric; ensuring that multicast traffic traversing from the plurality of TRILL distribution trees is not looped back to the TRILL fabric through the VXLAN/IP fabric; restoring connectivity among a plurality of VXLAN/IP fabric partitions through the TRILL fabric if the VXLAN/IP fabric is partitioned; and restoring connectivity among a plurality of TRILL fabric partitions through the VXLAN/IP fabric if the TRILL fabric is partitioned.

A plurality of physical uplink control channel (PUCCH) groups comprise a primary PUCCH group comprising a primary cell and a secondary PUCCH group comprising a PUCCH secondary cell. The wireless device deactivates the PUCCH secondary cell after a deactivation condition for the PUCCH secondary cell is met. The wireless device stops receiving downlink shared channel transport blocks on a first secondary cell in the secondary PUCCH group after deactivation of the PUCCH secondary cell. The wireless device continues receiving downlink multicast channel transport blocks on the first secondary cell.

Systems and methods provide concurrent security processing for multiple network security tools. An input packet is received at a network packet forwarding system from a network packet source, and the network packet forwarding system concurrently sends an output packet based upon the input packet to multiple security tools. Return packets are received based upon the output packet from the security tools after their respective security processing. Once return packets are received from each of the security tools, the network packet forwarding system forwards a secure packet to a packet destination. If a timeout occurs before all return packets are received, the network packet forwarding system can assume that the original packet was unsafe and discard information stored for the input packet. If security tools are configured to modify packets, these modifications can also be tracked.

System and method for supporting proxy based multicast forwarding in a high performance computing environment. In accordance with an embodiment, a proxy based multicast forwarding system and method can be utilized. A proxy, either software, firmware, or hardware based, can be initialized and run within a local subnet domain, wherein the proxy is a member of at least one multicast group (MCG). The proxy can be configured to forward packets to other subnet domains in several different methods.

Selected ones of multiple groups of network entities are assigned to corresponding routing structures, where each of the routing structures defines a set of paths through a network among network entities of a corresponding one of the groups. The assigning considers available multicast resources in communication nodes in the network, and a criterion relating to reducing overall cost in the assignment of the selected groups to the corresponding routing structures.

A first network device adapted for communication with one or more other network devices is configured to originate a first route identifying a tunnel for carrying traffic for a multicast, to originate a second route specifying a leaf information requirement for the multicast but not identifying a tunnel for carrying traffic for the multicast, and to track a plurality of receivers of the multicast based at least in part on leaf information received from the multicast receivers responsive to the specified leaf information requirement of the second route. The first route may comprise an inclusive route having a tunnel attribute that identifies an inclusive tunnel for the multicast and the second route may comprise a selective route having a tunnel attribute configured to indicate that it carries no tunnel information. Multicast traffic can be switched between an inclusive tunnel and a selective tunnel responsive to the multicast receiver tracking.

A multicast frame directed to a plurality of devices coupled to a network can be received, where the plurality of devices comprising at least one intended recipient device and at least one unintended recipient device. A destination unicast address corresponding to an intended recipient device can be identified. The multicast frame can be converted into a unicast frame directed to the intended recipient device, the unicast frame configured with the destination unicast address. The unicast frame can be blocked from accessing the unintended recipient device. The unicast frame can be provided to the intended recipient device.

A first multihoming network virtualization edge (NVE) configured to receive a first multicast packet sent by a multihomed tenant end system (TES), acquire an ingress port of the first multicast packet and a virtual local area network (VLAN) identifier (ID) of the first multicast packet, acquire a virtual overlay network (VN) ID of the first multicast packet according to the ingress port and the VLAN ID, determine whether the ingress port is a designated forwarder (DF) of the VN ID, encapsulate the first multicast packet with an extended NVO3 header when the ingress port is not the DF of the VN ID, and send the first multicast packet that is encapsulated with the extended NVO3 header to another NVE that includes a second multihoming NVE, where the extended NVO3 header carries the VN ID and a link aggregation group (LAG) ID that corresponds to the ingress port.

A multi-hop heterogeneous wireless network is partitioned into a set of subnetworks including a first subnetwork having a first sink node and a second subnetwork having a second sink node. A node forms parts of the first and the second subnetworks and has different modes of operations (MOP) depending on the subnetwork. For example, the node has a first MOP specifying a type of the routing in the first subnetwork and a second MOP specifying a type of the routing in the second subnetwork. The node determines the MOD based on available routing resource of the node that is independent from the subnetwork and based on required routing resource that varies among the subnetworks. The node routs packets in the first subnetwork according to the first MOP and routing packets in the second subnetwork according to the second MOP.

Distributed conferencing systems and methods provide local meeting contents to remote participants. In accordance with various example embodiments, a plurality of authorized source units generate media content responsive to and representative of respective content for a meeting. In response to the generated media content, one or more data streams are developed at each authorized source, each stream being a separately-decodable real-time representation of at least a portion of the media content generated at the respective authorized source. The separate data streams are transmitted by each authorized source to a common multicast IP group address for retrieval/access by remote participants.