Abstract: A method and system are disclosed, for using Intermediate System to Intermediate System, IS-IS, as control plane for Shortest Path Bridging, SPB, in a network comprising at least a Service Provider Network, SPN (101), and at least two Backbone Edge Bridges, BEBs (121i), connected to the SPN (101). The method comprises, and the BEBs are configured to: forming adjacency between BEBs through LAN Hellos, electing one of the BEBs as a Designated IS, DIS, and an emulated pseudonode, all BEBs creating and flooding non-pseudonode level-1 LSPs, the DIS creating and flooding a Pseudonode level-1 ESP, and periodically sending Complete Sequence Number PDUs, CSNPs, to the other BEBs, and running Shortest Path First, SPF, to calculate the shortest path in the network between BEBs.

Abstract: A method and system are devised of moving at a NAS (1) a client (12, 13) with a MAC address, from a first VLAN to a second VLAN. A leaf is comprised of at least one intermediate L2 bridge/switch (5, 9) being connected to the NAS (1). The client (12, 13) is being connected to one (9) of the at least one intermediate L2 bridge/switches (5, 9) in the leaf. The method and system involve sending at the NAS (1) a first message downlink (31, 36) to intermediate L2 bridge/switches (5) in the leaf directly connected to the NAS.

Abstract: A method of communicating presence information is provided. The method includes receiving (210) at a controller node a location identification indication from a mobile device. The location identification is based on a location identifier received at the mobile device from a broadcast node. A conference status of the mobile device is determined (220) at the controller node based on the location identification indication and a device identifier of the mobile device. The mobile device is instructed to update (230) a presence indication when the mobile device meets a conference status criteria.