Method for mac addresses withdrawal in telecommunication networks
OwnerAlexander KUGEL, Igor Shifrininventors
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Abstract
A rationalized MAC withdrawal method for a multi-domain communication network, where at least one access node interconnects a remote node with two or more access networks. The method allows flushing, both in the access nodes and in the remote node, only MAC addresses being related to a specific access networks where a topological change has taken place, without affecting other access networks connected to the same access node.
Claims10
A MAC withdrawal method in a communication network comprising two or more network domains with network nodes and MAC addresses (MACs), communication between the network nodes being performed by data frames;
- the method comprising:
- a) assigning unique IDs to the network domains;
- b) providing each data frame with indication of ID of a network domain from which the frame originates;
- c) learning of MACs at the network nodes in association with their respective network domains;
- d) in case of a topology change in said communication network, sending a notification of a topology change with indication of ID of a specific network domain where said change occurred;
- and
- e) at the network nodes, performing MAC withdrawal only of those MACs related to the specific network domain where said topology change occurred.
A method of MAC withdrawal in a communication network divided into component network domains comprising a core network having at least one core node and two or more access networks having respective access nodes;
- the network domains communicating by data frames, the method comprises:
- learning MAC addresses (MACs) while receiving a data frame by registering MACs in a forwarding database (FDB) of the core node according to a virtual interface being a combination comprising:
- an indication of the access node, from which the data frame has arrived to the core node, and
- an indication of ID of the access network from which the data frame previously arrived to the access node;
- in case of a topology change in a specific access network, notifying the core node about it by the access node associated with the specific access network;
- performing withdrawal only of such MACs registered in FDB of the core node, which are associated with ID of the access network affected by the topology change.
Dependencies are inferred from the claim text.