Method, Apparatus, and System for Acquiring Configuration File

摘要

A method, an apparatus, and a system for acquiring a configuration file in a data over cable service are provided. The system includes: a convergence device, a cable modem terminal system CMTS assembly, and a cable modem CM, where the convergence device is connected to the CM using the CMTS assembly. The convergence device may be configured to intercept a first DHCP response message sent by a DHCP server to the CM; acquire configuration file information of the CM from the first DHCP response message; send the configuration file information of the CM to the CMTS assembly; replace address information of a Trivial File Transfer Protocol TFTP server in the first DHCP response message with address information of the convergence device, to form a second DHCP response message; and send the second DHCP response message to the CM.

主权项

1. A data over cable service system, comprising:
a convergence device; a cable modem terminal system (CMTS) assembly; and a cable modem (CM), wherein the convergence device is connected to the CM using the CMTS assembly, wherein the convergence device is configured to:
intercept a first Dynamic Host Configuration Protocol (DHCP) response message sent by a DHCP server to the CM;acquire configuration file information of the CM from the first DHCP response message;send the configuration file information of the CM to the CMTS assembly;replace address information of a Trivial File Transfer Protocol (TFTP) server in the first DHCP response message with address information of the convergence device in order to form a second DHCP response message; andsend the second DHCP response message to the CM, wherein the CM is configured to send, to the convergence device, a TFTP request message for requesting to deliver a configuration file, and wherein the CMTS assembly is configured to:
intercept the TFTP request message after it is determined that a configuration file name in the TFTP request message is the same as a configuration file name in the configuration file sent by the convergence device;request the TFTP server corresponding to the address information of the TFTP server to deliver a configuration file of the CM; andsend the delivered configuration file to the CM.