Reliable status delivery and request mechanism for static pseudowires

A method for determining peer status in a pseudowire (PW) node, the method comprising:

• receiving a first PW status request message from a peer node including a peer node local message ID, peer node remote message ID, and request flag;
• setting a PW remote message ID to the peer node local message ID;
• sending a second PW status request message to the peer node, if requested by the peer node, including the PW node local message ID, PW node remote message ID, and request flag;
• and
• starting a first request timer.

A pseudowire (PW) node comprising:

• a network interface;
• a memory;
• and
• a processor in communication with the memory, the processor being configured to:
• send a first PW status request message to a peer node including a PW node local message ID, PW node remote message ID, and request flag;
• start a first retry timer;
• start a second retry timer when the first retry timer expires and no response to the first PW status request message is received;
• start a first request timer when the second retry timer expires and no response to the first PW status request message is received;
• and
• start a third retry timer when the first request timer expires and no response to the first PW status request message is received.