Method and System for Providing Default Route Advertisement Protection
AssigneeVerizon Business Network Services Inc.
InventorDante J. Pacella
Life of this patent
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Abstract
A system and method in accordance with exemplary embodiments may include detecting connectivity of a core network element to an internal network. In addition, the system and method may halt advertisement of a default route from the core network element to a network element external to the internal network in response to not detecting connectivity of the core network element to the internal network. The system and method may also allow advertisement of the default route from the core network element to the network element external to the internal network in response to detecting connectivity of the core network element to the internal network.
Claims20
A method comprising:
- detecting connectivity of a core network element to an internal network;
- halting advertisement of a default route from the core network element to a network element external to the internal network in response to not detecting connectivity of the core network element to the internal network;
- and
- allowing advertisement of the default route from the core network element to the network element external to the internal network in response to detecting connectivity of the core network element to the internal network.
A system comprising:
- a connectivity detector module configured to determine whether a core network element is connected to an internal network;
- a default route advertisement module configured to advertise a default route based on the connectivity determination made by the connectivity detector module;
- and
- a routing table module configured to store at least one routing table.
A method comprising:
- detecting connectivity of a core network element to an internal network;
- halting advertisement of a default route from the core network element to a network element external to the internal network in response to not detecting connectivity of the core network element to the internal network;
- and
- allowing advertisement of the default route from the core network element to the network element external to the internal network in response to detecting connectivity of the core network element to the internal network,
- wherein a control routing policy is configured to allow the advertisement of the default route from the core network element in the event of an Interior Gateway Protocol (IGP) table associated with the core network element storing one or more addresses associated with a unique Internet Protocol (IP) address space.
Dependencies are inferred from the claim text.