Restoration mechanism for network topologies

A method of restoring a failure in a network topology, comprising:

• providing a first node having a first access link connected to a first port group of a first customer and a first network link connected to a first router, a second node having a first access link connected to the first port group of the first customer and a first network link connected to a second router, the first node having a second network link connected to the second node via a second network link of the second node;
• setting the first node in an active state relative to the first port group and the second node in a stand-by state relative to the first port group;
• sending information to the first node in the first access link;
• the first node receiving the information and forwarding the information in the first network link to the first router;
• the first node forwarding the same information in the second network link to the second node;
• the second node receiving the information from the first node in the second network link;
• and
• the second node sending the received information in the first network node to the second router;
• detecting a failure in the second access link of the first node;
• and
• switching the second node from the stand-by state to the active state.

A method of restoring a failure in a network topology, comprising:

• providing a first node having a first access link connected to a first port group of a first customer and a first network link connected to a first router, a second node having a first access link connected to the first port group of the first customer and a first network link connected to a second router, the first node having a second network link connected to the second node via a second network link of the second node;
• setting the first node in an active state relative to the first port group and the second node in a stand-by state relative to the first port group;
• sending information to the first node in the first access link;
• the first node receiving the information and forwarding the information in the first network link to the first router;
• the first node forwarding the same information in the second network link to the second node;
• the second node receiving the information from the first node;
• and
• the second node sending the received information in the first egress node to the second router;
• detecting a failure in the first node;
• and
• switching the second node from the stand-by state to the active state.