In a spanning tree network, topology change notifications are omitted when a port becomes forwarding if the peer port is an Alternate or Backup port in Discarding state. Other features are also provided.

In general, techniques are described for a dynamic prefix list for route filtering. In one example, a network device comprises a control unit comprising one or more processors; one or more interface cards coupled to the control unit; a routing protocol process configured to execute on the control unit to exchange, using the interface cards, routing protocol advertisements with a peer network device in accordance with a routing protocol; and a configuration database comprising a routing policy that references a dynamic prefix list comprising one or more prefixes. The routing policy includes at least one action for application to routes for import or export, by the network device via a routing protocol, that match any of the one or more prefixes of the dynamic prefix list. The dynamic prefix list comprises a routing table to store the one or more prefixes, the routing table separate from the configuration database.

Systems and methods include, in a node having a plurality of Media Access Control (MAC) addresses with a source MAC address for an application and with the node connected to Network Termination Equipment (NTE) having flooding disabled, configuring the node to periodically send a packet to the NTE with the source MAC address for the application to pre-populate a forwarding database in the NTE; and transmitting the packet to the NTE periodically such that the NTE receives the packet and installs the source MAC address in its forwarding database for reachability thereto despite the disabled flooding. The plurality of Media Access Control (MAC) addresses can include a chassis MAC address and the source MAC address for the application. The packet can be a no-operation packet which requires no processing by the NTE except installation of the source MAC address for the application.

Examples disclosed herein relate to a method comprising detecting, by a bi-directional forwarding detection (BFD) protocol, a link failure of a link associated with a network device on a network. The method may include notifying, by the BFD protocol, a routing protocol and a hardware plugin about the link failure and identifying, by the routing protocol, an updated route for the network that does not include the network device. The method may also include deleting, by the hardware plugin, any routes programmed into a forwarding information base (FIB) including the first network device upon receiving the notification from the BFD protocol and installing, by the hardware plugin, the updated route into the FIB to be used for forwarding network traffic on the network.

Virtual network identifiers are extracted from route advertisements. A table associates virtual network identifiers with provider edge devices. When a virtual network identifier extracted from a route advertisement matches a virtual network identifier in the table, the route advertisement is propagated to the provider edge devices associated with that virtual network identifier in the table. The route advertisement is not propagated to provider edge devices not associated with that virtual network identifier in the table.

A method for distributing network function (NF) topology information among proxy nodes and for using the NF topology information for inter-proxy node message routing includes configuring a first proxy node as a leader service communications proxy (SCP). The method further includes configuring a plurality of second proxy nodes as worker proxy nodes. The method further includes registering the worker proxy nodes with the leader SCP. The method further includes subscribing, by the worker proxy nodes and with the leader SCP, to receive NF topology information from the leader SCP. The method further includes, at the leader SCP, receiving NF topology information from the worker proxy nodes and communicating the NF topology information to the worker proxy nodes subscribed to receive the NF topology information. The method further includes, at the worker proxy nodes, using the NF topology information to route messages to proxy nodes serving destination NFs.

Network identifiers are extracted from route advertisements. A table associates virtual network identifiers with provider edge devices. When a virtual network identifier extracted from a route advertisement matches a virtual network identifier in the table, the route advertisement is propagated to the provider edge devices associated with that virtual network identifier in the table. The route advertisement is not propagated to provider edge devices not associated with that virtual network identifier in the table.

There are disclosed devices, system and methods for mapping relationships between macro-clusters of a network object topology of a computer communication network. A remote network object of the network is selected that has a relationship with one macro-cluster that has a relationship with another macro-cluster. Flow log data, metric data and configuration data are gathered from at least the selected network object. Configuration data and time data are generated for the sets network objects of the two macro-clusters using the gathered flow log data, metric data and configuration data. Network topology information is created using the configuration data and time data. The network topology information includes topology information for the relationship between the macro-clusters, for each macro-cluster and for the sets of network objects of the macro-clusters. The topology information can be stored and used to determine whether performance issues occur in the macro-clusters or relationship over time.

A data processing method implemented by a controller includes receiving a processing request from a specified node that carries identifiers of a plurality of computing nodes, where the plurality of computing nodes are configured to execute a specified calculation task, determining a target switching device from switching devices that are configured to connect to the plurality of computing nodes, and separately sending, to the target switching device and the specified node, routing information that indicates data forwarding paths between the plurality of computing nodes and the target switching device. The target switching device is configured to combine, based on the routing information, data reported by the plurality of computing nodes, and then send combined data to each computing node. The specified node is configured to send the routing information to each computing node, and each computing node may report data to the target switching device based on the routing information.

Methods and systems are described for automatically detecting network routing peers and establishing route peering sessions. An illustrative method includes retrieving, at a network router, route peer configuration for the network router. The route peer configuration identifies one or more network interfaces for route peering but typically does not identify an address of peer routers. The method identifies, based on the route peer configuration, a network interface from a plurality of network interfaces of the network router for route peering and configures the network interface to participate in route peering. The method then detects a peer router on the network interface and initiates a peering session on the network interface with the peer router. Using the peering session, the method exchange route information with the peer router.