Patent ID: 7835388

Claim:
A communication apparatus comprising: a first interface, configured to receive/transmit a first data packet and acquire the physical address of a peer side through an Address Resolution Protocol (ARP), connected with a first link which adopts a first link layer protocol; wherein the communication apparatus is a provider edge (PE), the PE removes link layer information from the first data packet according to the first link layer protocol of the first interface when the first interface is an input interface and a predefined type; a second interface, configured to receive/transmit and encapsulate a second data packet and acquire the physical address of the peer side through static configuration or broadcast, connected with a second link which adopts a second link layer protocol of an output interface; a data processor, connected with the first interface and the second interface, configured to process the data packet between the first interface and the second interface according to types of the first interface and the second interface; where the communication apparatus is configured to interwork local heterogeneous link layer protocols; and the first link layer protocol is different from the second link layer protocol.