Notification method and device and acquisition device for MAC address of ESADI

An announcement method for a Media Access Control(MAC) address of End Station Address Distribution Information(ESADI)comprising:

• issuing, by a first Routing Bridge (RB), a MAC address which is reachable natively by the first RB via a Link State Protocol (LSP) of the ESADI to a network;
• and
• announcing, by the first RB, MAC addresses of other RBs and the MAC address of the first RB through a MAC-Reachability Type Length Value (TLV) extension of the LSP,
• wherein the first RB and other RBs belong to a same Multi-Chassis Link Aggregation Group (MC-LAG),
• wherein the MAC-Reachability TLV extension of the LSP comprises:
• Identities (IDs) of the other RBs which belong to the same MC-LAG as the first RB in one or more MAC ITEMs of a MAC-Reachability TLV of the LSP, and wherein the MAC ITEM is an extension of a MAC address field in the MAC-Reachability TLV,
• wherein, after issuing, by the first RB, the MAC address which is reachable natively by the first RB via the LSP of the ESADI to the network, the method further comprises:
• receiving, by a remote Routing Bridge (RB), a first MAC-Reachability TLV extension of Link State Protocol (LSP) from the first RB,
• receiving, by the remote RB, one or more second MAC-Reachability TLV extensions of LSP from the other RBs;
• determining, by the remote RB, that MAC addresses of the other RBs and a MAC address of the first RB have a relationship and belong to the same MC-LAG according to the first and second MAC-Reachability TLV extensions of the LSP,
• wherein the determining comprises:
• acquiring, by the remote RB, the IDs of the other RBs, wherein the IDs of the other RBs are carried in one or more MAC ITEMs of the first MAC-Reachability TLV extension of the LSP,
• respectively determining that an ID of the first RB is carried in a MAC ITEM of the second MAC-Reachability TLV extensions of the LSP, and
• combining the MAC addresses of the first RB and the other RBs which have the relationship as belonging to the same MC-LAG into one MAC address providing unit;
• calculating, by the remote RB, a confidence of the MAC address providing unit, wherein the confidence is used for participating in a MAC ITEM calculation of Transparent Interconnection of Lots of Links (TRILL) of the MAC addresses.