Centralized model driven trace route mechanism for TCP/IP routers : Remote traceroute invocation using NETCONF API and YANG data model

During the recent years, utilizing programmable APIs and YANG data model for service configuration and monitoring of TCP/IP open network devices from a centralized network management system as an alternative to SNMP based network management solutions has gained popularity among service providers and network engineers. However, both SNMP and YANG lacks any data model for tracing the routes between different routers inside and outside the network that has not addressed. Having a centralized traceroute tool provides a central troubleshooting point in the network. And rather than having to individually connect to each router terminal, traceroute can be invoked remotely on different routers. And the responses can be collected on the network management system. The aim of this thesis is to develop a centralized traceroute tool called Trace that invokes traceroute CLI tool with a unique syntax from a centralized network management system on a TCP/IP router, traces the hops and BGP AS and measures RTT between a router and specific destination and returns the response back to the network management system. And evaluates the possibility of utilizing this traceroute tool along with YANG based network management solutions. This implementation has shown that YANG based data models enables a unique syntax on the network management system for invoking traceroute command on different TCP/IP devices. This unique syntax can be used to invoke the traceroute CLI command on the routers with the different operating systems. And the evaluation has shown that using NETCONF as an API between the network management system and the network devices, enables the Trace to be utilized in YANG and NETCONF based network management solutions

Centralized model driven trace route mechanism for TCP/IP routers : Remote traceroute invocation using NETCONF API and YANG data model

During the recent years, utilizing programmable APIs and YANG data model for service configuration and monitoring of TCP/IP open network devices from a centralized network management system as an alternative to SNMP based network management solutions has gained popularity among service providers and network engineers. However, both SNMP and YANG lacks any data model for tracing the routes between different routers inside and outside the network that has not addressed. Having a centralized traceroute tool provides a central troubleshooting point in the network. And rather than having to individually connect to each router terminal, traceroute can be invoked remotely on different routers. And the responses can be collected on the network management system. The aim of this thesis is to develop a centralized traceroute tool called Trace that invokes traceroute CLI tool with a unique syntax from a centralized network management system on a TCP/IP router, traces the hops and BGP AS and measures RTT between a router and specific destination and returns the response back to the network management system. And evaluates the possibility of utilizing this traceroute tool along with YANG based network management solutions. This implementation has shown that YANG based data models enables a unique syntax on the network management system for invoking traceroute command on different TCP/IP devices. This unique syntax can be used to invoke the traceroute CLI command on the routers with the different operating systems. And the evaluation has shown that using NETCONF as an API between the network management system and the network devices, enables the Trace to be utilized in YANG and NETCONF based network management solutions

ONOS-Controlled Disaggregated Optical Networks

State-of-art, potentials and limitations of the ONOS controller applied to disaggregated optical networks are reported. Focus is on the on-going ODTN project. Results of experimental demonstrations are reported to prove the feasibility of proposed approach

Using NETCONF-proxy server to integrate laboratory equipment into software-defined infrastructures

The essential changes that have taken place over the past decade in the field of telecommunications present new requirements for the educational institutions laboratory complexes management. The modern management concept "Infrastructure as Code"(Infrastructure as Code, IaC) proclaims the usage of a single and universal approach for programmatic management of all components of the communication and computing infrastructure. One of the most common ways to implement this approach is based on the representation of managed unit's configurations in the form of specially marked-up records that form the configuration management database. In this case, process of infrastructure components control is nothing more then sequence of transactions that can be performed for this database records, both locally or remotely - by using network management protocols. The implementation of solutions based on modern universal protocols and network management tools will be complicated when the controlled components do not support modern network management protocols and are separated by the institution's intranet. As one of the possible approaches to solving these problems, we consider the use of gateway communication servers as part of the training classes, which will be able to implement dynamic configuration management of special laboratory equipment of the training class and to provide information interaction between the components of the laboratory complex. The paper considers the choice of control protocols for the gateway server, as well as tools for managing communication infrastructures, and presents an implementation option for this approach for integrating special laboratory equipment of the IRIT RTF at Ural Federal University laboratory classes into a single software-defined laboratory complex. © Published under licence by IOP Publishing Ltd

Experimental demonstration of cognitive provisioning and alien wavelength monitoring in multi-domain EON

This paper proposes a cognitive multi-domain EON architecture with machine-learning aided RMSA and alien wavelength monitoring. Testbed experiments show modulation format recognition, QoT monitoring and cognitive routing for a 160 GBd alien multi-wavelength lightpath.Peer ReviewedPostprint (published version

Overview of South-Bound Interfaces for Software-Defined Optical Networks

In SDN-enabled networks, the control plane and data plane interaction relies on open SouthBound Interfaces (SBIs) so that the SDN controller exercises direct control over the data plane elements. In this paper, we review current initiatives of SBI to control optical components which include ad-hoc extensions of OpenFlow and YANG modelling proposals combined with the NETCONF / RESTCONF protocols. Then we overview different tools and frameworks available for quick prototyping and deployment of software services that are compliant with such interfaces. Finally, we discuss the advantages and drawbacks of the reviewed initiatives considered key enablers for standardized end-to-end network programmability

A distributed cyber-security framework for heterogeneous environments

Evolving business models, computing paradigms, and management practices are rapidly re-shaping the usage models of ICT infrastructures, and demanding for more flexibility and dynamicity in enterprise security, beyond the traditional "security perimeter" approach. Since valuable ICT assets cannot be easily enclosed within a trusted physical sandbox any more, there is an increasing need for a new generation of pervasive and capillary cyber-security paradigms over distributed and geographically-scattered systems. Following the generalized trend towards virtualization, automation, software-definition, and hardware/software disaggregation, in this paper we elaborate on a multi-tier architecture made of a common, programmable, and pervasive data-plane and a powerful set of multi-vendor detection and analysis algorithms. Our approach leverages the growing level of programmability of ICT infrastructures to create a common and unified framework that could be used to monitor and protect distributed heterogeneous environments, including legacy enterprise networks, IoT installations, and virtual resources deployed in the cloud