Resilient attachment to provider link state bridging (plsb) networks

A non-transitory processor readable medium carrying instructions for execution by at least one processor in an edge node of a network domain for interfacing a Client System (CS) with the network domain, the CS comprising a function for load spreading packets originating from the CS across two or more attachment links and the edge node being configured to be one of a set of a plurality of peer edge nodes wherein each peer edge node in the set is associated with at least one of the two or more attachment links, the instructions comprising:

• instructions executable by the at least one processor to associate at least one local port of the edge node to be used for coupling to the CS with a particular media access control (MAC) address, such that:
• all ports used for coupling to the CS are associated with the particular MAC address;
• packets received at a network domain port of the edge node will be forwarded toward the CS when the packets have the particular MAC address;
• and
• packets received at the at least one local port will be forwarded to an appropriate network domain port of the edge node for transmission over the network domain;
• and
• instructions executable by the at least one processor to arrange that each of the peer edge nodes in the set associate the same particular MAC address with respective local ports of the peer edge node to be used for coupling to the same CS.