Troubleshooting method and apparatus for edge routing bridge in TRILL campus

An apparatus in a Transparent Interconnection of Lots of Links (TRILL) campus, the apparatus comprising:

• a memory configured to store program instructions;
• a processor coupled to the memory and configured to execute the program instructions to:
• receive a fault notification message through the TRILL campus, from a first edge routing bridge (RB) in a multi-homing access group, before a predetermined time, and when a first access link of the first edge RB is faulty, wherein the multi-homing access group comprises multiple edge RBs including the first edge RB and the apparatus, wherein the multi-homing access group couples a customer edge device to the TRILL campus using the first access link for the first edge RB and a second access link for the apparatus, and wherein the fault notification message comprises an identifier of the first edge RB and an access port identifier of the first edge RB when the multi-homing access group works in an active/standby manner;
• and
• determine, from the edge RBs except the first edge RB in response to receiving the fault notification message, a new appointed forwarder (AF) for a virtual local area network (VLAN) when the first edge RB is a current AF for the VLAN.

A Transparent Interconnection of Lots of Links (TRILL) campus comprising:

• a multi-homing access group, wherein the multi-homing access group comprises multiple edge routing bridges (RBs) including a first edge RB and a second edge RB, wherein the multi-homing access group couples a customer edge device to the TRILL campus using a first access link for the first edge RB and a second access link for the second edge RB, wherein the multi-homing access group works in an active/standby manner, wherein the first edge RB is configured to:
• detect a fault of the first access link;
• and
• send a fault notification message through the TRILL campus to the second edge RB, and
• wherein the second edge RB is configured to:
• receive the fault notification message through the TRILL campus and before a predetermined time;
• and
• determine a new appointed forwarder (AF) from the multiple RBs except the first edge RB in response to receiving the fault notification message, wherein the new AF is for a virtual local area network (VLAN) when the first edge RB is a current AF for the VLAN.