Access network system, and data packet processing method and apparatus
Embodiments of the present invention provide an access network system, and a data packet processing method and apparatus. The system includes: a controller, configured to perform configuration a flow table for a switching module and a protocol function for at least one functional module; the switching module, configured to send a first data packet to a first functional module of the at least one functional module according to the flow table configured by the controller, where the first functional module is a functional module first indicated in the flow table to process the first data packet; and the at least one functional module, configured to process the first data packet according to the protocol function configured by the controller.
1. An access network system, comprising hardware components including:
a controller configured to:
configure a flow table to a switching module;
configure a first protocol function to a first functional module of a plurality of functional modules;
the switching module configured to:
receive a first data packet;
determine, based on the flow table, the plurality of functional modules;
add a software-defined protocol (SDP) packet header to the first data packet indicating the first functional module of the plurality of functional modules and a second functional module of the plurality of functional modules, wherein the first functional module and the second functional module perform different protocol functions;
send the first data packet to a first functional module according to the flow table, wherein the first functional module is a functional module indicated first in the flow table; and
the first functional module configured to:
process the first data packet according to the first protocol function to generate a processed first data packet; and
transmit, based in part on the SDP packet header, the processed first data packet to the second functional module, wherein the second functional module is a functional module indicated second in the flow table.
2. The access network system according to claim 1 , wherein the switching module is further configured to:
replace a packet header of the first data packet with the SDP packet header according to content in the flow table, wherein the SDP packet header comprises:
indication information of the first functional module; and
a first protocol header corresponding to the first functional module indicated by the indication information; and
the first functional module is further configured to:
process, according to the first protocol function, the first protocol header that is in the SDP packet header.
3. The access network system according to claim 2 , wherein the second functional module is configured to:
process the processed first data packet according to a second protocol function,
wherein the second functional module is a functional module that sequentially follows the first functional module as indicated by the indication information.
4. The access network system according to claim 3 , wherein the controller is specifically configured to:
configure the flow table for the switching module according to a control policy.
5. The access network system according to claim 2 , wherein the controller is further configured to:
configure the flow table for the switching module and the first protocol function according to a control policy.
6. The access network system according to claim 1 , wherein the controller is further configured to:
configure, based on a control policy, the flow table; and
configure, based on the control policy, the first protocol function.
7. The access network system according to claim 6 , further comprising:
a centralized controller configured to generate the control policy.
8. The access network system according to claim 7 , wherein the control policy comprises a data packet processing mode and a data packet processing procedure; and
the controller is further configured to:
configure the first protocol function according to the data packet processing mode; and
configure the flow table according to the data packet processing mode and the data packet processing procedure.
9. The access network system according to claim 6 , wherein the control policy comprises a data packet processing mode and a data packet processing procedure; and
the controller is further configured to:
configure the first protocol function according to the data packet processing mode; and
configure the flow table according to the data packet processing mode and the data packet processing procedure.