System and method for assigning a service flow classifier to a device

摘要

A system and method for assigning a service flow classifier to a device. A MAC address of a device is extracted from a DHCP discover message. A DHCP server constructs a key from the device MAC address and an IP address assigned by the DHCP server. The key identifies a record of attributes of the device. A configuration server uses the key to access the attribute record and to generate a boot file for the device. The boot file includes one or more service flow classifiers that determine a service flow for packets destined for the device.

主权项

1. A method for assigning a service flow classifier to a device comprising:
receiving at a Dynamic Host Configuration Protocol (DHCP) server a DHCP discover message from the device, wherein the DHCP discover message comprises a MAC address of the device; generating at the DHCP server:
an attributes record key for the device, wherein the attributes record key uniquely identifies a record for the device stored on the DHCP server; anda device file name for the device, wherein the device file name comprises an IP address of the DHCP server and the attributes record key of the device; sending the device file name and an IP address of a Dynamic Trivial File Transfer Protocol (DTFTP) server to the device; sending from the device the device file name to the DTFTP server in a boot file request message; accessing from the DTFTP server an attribute record of the device stored on the DHCP server using the IP address of the DHCP server and the attributes record key for the device; generating at the DTFTP server a boot file for the device, wherein the boot file comprises one or more service flow classifiers and sending the boot file to the device; receiving at the device the boot file; and configuring the device with the one or more service flow classifiers.