Method and apparatus providing delayed path calculations based on service type

摘要

A method, apparatus and computer program product for providing delayed path calculations based on service type is presented. A first network device sends to at least one of a plurality of other network devices in a network, link state information directing receivers of the link state information, when computing routes transiting though the first network device, to refrain from using the first network device on at least one of the group consisting of per Network Layer Protocol Identifier (NLPID), per address family, and per service within an address family.

主权项

1. A computer-implemented method in which a computer system performs operations comprising:
sending, by a first network device to at least one of a plurality of other network devices in a network, link state information directing receivers of said link state information, when computing routes transiting though said first network device, to refrain from using said first network device on at least one of the group consisting of per Network Layer Protocol Identifier (NLPID), per address family, and per service within an address family; wherein said link state information comprises a Type Length Value (TLV) that is flooded to all devices in said network; wherein calculation of routes through said first network device are delayed as long as said TLV value indicates that routes should not be calculated through said first network device; and wherein said TLV indicates to other network devices not to use said first network device for Layer 2 (L2) routing but said first network device can be used for L3 routing.