Thank you for your question. As we know, Shortest Path Bridging, initially specified by the IEEE is a computer networking technology that was created with the sole purpose of addressing the challenges of spanning tree, simplifying the creation and configuration of Ethernet networks, enabling multipath routing of traffic, and supporting large-scale virtualization. SPB replaces all protocols in the classic network protocol stack with IS-IS protocol.

This technology builds the network topology and calculates the shortest paths by exchanging messages, forming adjacencies, exchanging information that allows them to understand what the network topology looks like, and enabling each switch to calculate the shortest path from itself to every other switch in the network. Further, it is also used to announce information to the switches concerning operational tasks like building a new virtual network or extending a virtual network to a new switch.
Nokia has a strong and innovative implementation of Shortest Path Bridging (SPB). SPB enables a next-generation control plane for PBB (Provider Backbone Bridging) based on IS-IS that adds the stability and efficiency of link state to unicast and multicast services. It offers point-to-point and multipoint-to-multipoint services on a large scale. It is deployed in both Ethernet and MPLS networks supporting Ethernet VLL and VPLS services. We provide true shortest path forwarding for unicast and efficient forwarding on a single tree for multicast. The detailed implementation and information are confidential and are available to our customers.

30 June, 2024 05:11