NETWORK LABEL ALLOCATION METHOD, DEVICE, AND SYSTEM

摘要

Embodiments of the present invention provide a network label allocation method, a device, and a system, which enable a local PE to distinguish packets from different remote PEs. The method includes: generating, by a local provider edge PE, a VPN label route for each remote PE, where VPN labels in VPN label routes of different remote PEs are different, and the remote PE and the local PE at least belong to a same VPN; and sending the VPN label route to the remote PE, so that the remote PE separately matches an IP address of the remote PE with a target device IP address in the VPN label route, and matches an import route target RT of each VRF of the remote PE with a route target RT in the VPN label route, a packet related to a successfully matched VRF.

主权项

1. A network label allocation method, comprising:
generating, by a local provider edge PE, a Virtual Private Network (VPN) label route carrying a VPN label for each remote PE, wherein VPN labels in VPN label routes of different remote PEs are different, and the remote PE and the local PE at least belong to a same VPN; and sending, by the local PE, the VPN label route to the remote PE, so that the remote PE separately matches an IP address of the remote PE with a target device IP address in the VPN label route, and matches an import route target RT of each virtual routing forwarding VRF of the remote PE with a route target RT in the VPN label route, so as to make the remote PE carry the VPN label when the remote PE sends, to the local PE, a packet related to a successfully matched VRF.