System and method for topology transparent zoning in network communications

摘要

An Autonomous System domain comprising a topology transparent zone comprising a plurality of topology transparent zone nodes at least some of which are topology transparent zone edge nodes, wherein the topology transparent zone nodes are interconnected with one another via a plurality of internal links, and a plurality of neighboring external nodes connected to the topology transparent zone edge nodes via a plurality of external links, wherein no link state advertisements (LSAs) describing the internal links are distributed to the neighboring external nodes.

主权项

1. A method implemented in a Topology Transparent Zone (TTZ) edge router, the method comprising:
distributing an internal Link State Advertisement (LSA) within a TTZ without distributing the internal LSA outside of the TTZ, wherein the internal LSA indicates a link state within the TTZ; receiving an external LSA indicating a link state outside of the TTZ; distributing the external LSA throughout the TTZ; originating a virtual LSA that virtualizes the TTZ such that the TTZ is presented as a single router; and sending the virtual LSA to an external router outside of the TTZ, wherein the internal LSA comprises:
a link identifier (ID) field that indicates a link; anda type field comprising a bit set to indicate the link is an internal link to an internal router inside the TTZ.