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TECHNIQUES FOR ZERO TOUCH PROVISIONING OVER NUMBERED INTERFACES

IP.com Disclosure Number: IPCOM000250018D
Publication Date: 2017-May-16

Publishing Venue

The IP.com Prior Art Database

Abstract

The present disclosure relates to Zero Touch Provisioning (ZTP) of Network Elements (NEs) over numbered interfaces (interfaces with an assigned Internet Protocol (IP) address). The proposed solution allows an IP address assigned by a Dynamic Host Configuration Protocol (DHCP) server to dynamically bind to one of many numbered interfaces on which the ZTP is enabled, enabling the network element to retrieve its NE-specific configuration from a location specified by the DHCP server. For example, on an NE shelf equipped with Layer-2 (L2) packet optical cards, the ZTP can be realized on packet port interface, or an in-band communications interface (Ethernet interface) via Layer-2 packet networks or both. Without knowing the network configuration, the DHCP client must be enabled on both interfaces, and the IP address must be applied to the correct interface even if it is not the one on which the DHCP lease is received. By the IP assignment, the shelf is able to contact a configuration server to retrieve its specific configuration, apply it and provision.

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TECHNIQUES FOR ZERO TOUCH PROVISIONING OVER NUMBERED INTERFACES

ABSTRACT

The present disclosure relates to Zero Touch Provisioning (ZTP) of Network Elements (NEs) over numbered interfaces (interfaces with an assigned Internet Protocol (IP) address).  The proposed solution allows an IP address assigned by a Dynamic Host Configuration Protocol (DHCP) server to dynamically bind to one of many numbered interfaces on which the ZTP is enabled, enabling the network element to retrieve its NE-specific configuration from a location specified by the DHCP server.  For example, on an NE shelf equipped with Layer-2 (L2) packet optical cards, the ZTP can be realized on packet port interface, or an in-band communications interface (Ethernet interface) via Layer-2 packet networks or both. Without knowing the network configuration, the DHCP client must be enabled on both interfaces, and the IP address must be applied to the correct interface even if it is not the one on which the DHCP lease is received. By the IP assignment, the shelf is able to contact a configuration server to retrieve its specific configuration, apply it and provision.

 

DETAILED DESCRIPTION

Again, the present disclosure relates to zero touch provisioning over numbered interfaces.  Networks (e.g., optical, packet, etc.) are realized through physical network elements interconnected to one another.  Network elements are geographically deployed such as in Central Offices (COs), data centers, huts/shelters, customer premises, etc.  The conventional approach to installation and provisioning includes field technicians installing, powering up the network element, and configuring provisioning information to enable the network element to communicate on the network.  Zero touch provisioning includes automatic configuration of the network element once it is powered up and able to communicate on the network such as to automatically download provisioning information.  Low touch provisioning, similar to zero touch provisioning, includes automatic configuration of the network element once the network element is at a minimum configured for network communication.  Advantageously, these approaches to provisioning significantly reduce turn up time and configuration errors. 

Problem statement:
  Consider the following network configuration as shown in FIG. 1.

FIG. 1 Multiple numbered interfaces communicating to a single DHCP server

Network Elements (NE) have two types of interfaces: those connecting to Data Communication Networks (DCN) for Operations, Administration, and Maintenance (OAM) purpose (herein referred to as OAM networks) and those connecting to Layer-2 packet networks.  The NEs provide Zero Touch Provisioning (ZTP) through both types of interfaces.  For generalization, the term “device” to describe any types of equipment that has ZTP supported on multiple numbered interfaces which have the ability to connect to Layer-2 networks, such as Ethernet interfaces, L2 packet optical inter...