Patent ID: 11895014
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A network system comprising a first network device, wherein the first network device is configured to:
obtain, from a second network device, a first route and a second route, wherein a first prefix corresponding to the first route is longer than a second prefix corresponding to the second route, wherein the second route is an aggregated route, and wherein the first route indicates that the first prefix is unreachable; and
switch, based on the first route, a next hop of the aggregated route from the second network device to a third network device, wherein either an access side device is dual-homed to the third network device and the second network device or a fourth route advertised by the third network device is a backup route of a third route advertised by the second network device.