| 摘要 |
When relaying a frame received at a MCLAG port to a bridge port, a MCLAG identifier adding unit adds a MCLAG identifier to the frame. When an encapsulated frame to which a MCLAG identifier has been added is received at the bridge port and the encapsulation of the frame, is performed by a peer device, a learning information control unit does not learn an encapsulation address contained in the encapsulated frame. More specifically, the learning information control unit learns a source customer address contained in the frame in association with the MCLAG identifier added to the frame to the address table, but does not learn a source encapsulation address. |
| 主权项 |
1. A relay system comprising:
a first switching device and a second switching device which are disposed at entrance or exit of a PBB network in which relaying based on a PBB standard is performed, the first and second switching devices converting an unencapsulated frame received from outside of the PBB network into an encapsulated frame and relaying the encapsulated frame to the PBB network, and the first and second switching devices converting the encapsulated frame received from the PBB network into the unencapsulated frame and relaying the unencapsulated frame to the outside of the PBB network, wherein the unencapsulated frame contains a customer address, the encapsulated frame has a configuration in which an encapsulation address is added to the unencapsulated frame based on the PBB standard, each of the first switching device and the second switching device includes: a lower-link port which transmits or receives the unencapsulated frame; an upper-link port which transmits or receives the encapsulated frame; one or a plurality of MCLAG ports which include a first MCLAG port serving as the lower-link port and on which an inter-device LAG is set; a bridge port which serves as the upper-link port and connects one device and a peer device; an address table which retains the customer address present ahead of the lower-link port in association with a port identifier representing the lower-link port or a MCLAG identifier corresponding to the lower-link port and retains the customer address present ahead of the upper-link port in association with the encapsulation address and a port identifier representing the upper-link port or a MCLAG identifier corresponding to the upper-link port; and a relay processing unit which learns and retrieves the address table, and the relay processing unit includes: a MCLAG identifier adding unit which, when a frame received at the MCLAG port is relayed to the bridge port, adds a MCLAG identifier corresponding to the MCLAG port to the frame; and a learning information control unit which, when the encapsulated frame to which the MCLAG identifier has been added is received at the bridge port and encapsulation of the frame is performed by the peer device, learns a source customer address contained in the encapsulated frame in association with the MCLAG identifier added to the encapsulated frame to the address table, and does not learn the encapsulation address contained in the encapsulated frame to the address table. |
