Patent ID: 11968232
Assignee: JUNIPER NETWORKS, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A network device, comprising:
one or more memories; and
one or more processors to:
receive, from another network device, a first message, a second message, and a third message, wherein:
the first message includes information indicating that a first link of the other network device is associated with a first security classification based on a first cost metric,
the second message includes information indicating that a second link of the other network device is associated with a second security classification based on a second cost metric, and
the third message includes information indicating that a third link of the other network device is associated with a third security classification based on a third cost metric,
wherein the first cost metric, the second cost metric, and the third cost metric are different,
wherein the first cost metric, the second cost metric, or the third cost metric is one or more of:
an interior gateway protocol (IGP) cost metric, or
a traffic engineering (TE) cost metric;

update, based on the first message, the second message, and the third message, a routing table;
determine, based on the routing table, a first routing path associated with the first security classification from the network device to the other network device, a second routing path associated with the second security classification from the network device to the other network device, and a third routing path associated with the third security classification from the network device to the other network device;
receive network traffic that is destined for the other network device and that is associated with a particular security classification, of the first security classification, the second security classification, or the third security classification; and
forward the network traffic based on a particular routing path, of the first routing path, the second routing path, or the third routing path, that is associated with the other network device and the particular security classification.