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Advanced architecture and services Implications of the CEF Networks workshop

Michal Hažlinský Lada Altmannová, Jan Nejman, Stanislav Šíma,

Josef Verich, Josef Vojtěch

Copenhagen, November 21th, 2012 Network Architects Workshop 1

Outline

1. Mission of R&E Networks

2. CESNET Integrated Facility

3. Advanced services of CESNET IF

4. Carrier Ethernet in CESNET


Extensions of the R&E networks - Motivation

• To use the full potential of global networking – Applications running in parallel to Internet

– Experimental networks (testbeds), research and science support

– To use resources more effectively (especially fiber footprint)

• To activate new requirements of users – Demanding real time applications

– Network control of instruments and processes

– Network Aided Design


Recommendations of the 7th CEF Networks Workshop (1)

• provide reliable environment for innovations especially by end users

• test and deploy leading-edge components and devices requested by new applications

• provide space for unconventional ideas and set-ups

• collaborate with vendors on scientific and pilot projects not known from telco networks and services

• develop multi-vendor experimental facilities available to end users

• ensure possibilities of CBFs are evaluated and used


• ensure that new applications like atomic clocks comparison or ultra-stable frequency transfer are not blocked in NRENs

• investigate possibilities for dark fiber testbed in European scale

• investigate possibilities of alien wavelengths deployment especially in international environment

• recollect that not only high speed (100G and beyond) networking is cutting-edge but new networking topics arrived

• collaborate actively with new projects (e.g. metrology) and provide information on how NRENs can help and provide new services


Recommendations of the 7th CEF Networks Workshop (2)

Extensions of the R&E networks mission

Development towards Integrated Facility which:

• Is available to users in form of Facility as a Service (FaaS)

• Integrates production network services, experimental facility services, testbed services, network fabric services, etc.

• Enables potentially disruptive experimentation, keeping production network services running reliably

• Share Fiber footprint for all its services (production, experimental and potentially disruptive)

• Is built on a System of interconnected computer networks


System of interconnected computer networks

Wikipedia: “The Internet is a global system of interconnected computer networks… “

The situation was changed: The Internet is one application of a global system of interconnected computer networks…

Non-Internet Applications (NIAs) running in parallel to the internet. • Precise time and frequency transfer • Remote instrument control and monitoring • Time-critical real-time applications

The future Internet will probably include a part of today‘s NIAs.

Photonic services enable the building of Integrated Facility.


Disruptive network technologies ? • A number of testbeds have been funded in recent years to explore and prototype

the dynamic instantiation of insulated network environments that can be used to test and evaluate disruptive network technologies. It is affordable from cost point of view for lambda testbeds and higher layers!

• The purpose of dark fibre experimentation is very different: to prepare cost effective use of dark fibres for needs of R&E Community. These technologies require realistic traffic loads in order to evaluate network behaviour at scale.

• Proved approach is:

– Design and testing period (typically about 3 month) for understanding risks of disruption and to reach stable solution setup – for example to avoid negative mutual influence of adjacent channels

– Long term operation period with parallel running of experimental and production services (for example frequency transfer on RENATER backbone or time transfer on Prague-Vienna line)


Importance Integrated facility brings freedom in experimentation on networks. • Independence on traditional network architectures and protocols

Various scientific, engineering and technical fields will benefit from the NIAs. • Metrology (time and frequency), fundamental physics, geophysics, next-

generation network synchronization, essential timing backup for vital systems in case of GPS outages (mobile telecom network, power grid, …)


Integrated Facility in CESNET


Integrated Facility in Prague Use for experimental and regular traffic


Integrated Facility in CESNET To divide CEF Network fibers into production and experimental footprint is considered harmful. • it is useful to enable experiments on the production network (for experts)

– Test of multivendor 100 Gb/s data transmissions (http://www.ces.net/doc/press/2011/pr110909.html)

• it is useful to enable production traffic on experimental lines (it is effective to use free bandwidth)

Deployment of one‘s own R&D results • Verification of R&D results

• Increasing FaaS strength in limited funding

• real-life large examples: single fiber bidirectional lines, Open DWDM photonic system developed by CESNET


http://www.ces.net/doc/press/2011/pr110909.html

CESNET Advanced Communication Services

CESNET Photonic

CESNET Lambda

CESNET Circuit

http://www.ces.net/services/




CESNET Photonic Photonic Service End-to-End connection between two or more places in an optical network.

Described by its photonic path and allocated bandwidth.

– physical route that light travels from the one point to another

– reserved part of system spectrum along the entire path – fully transparent network

– All-optical path, no OEO conversion


Provides: – Minimal and constant latency (negligible jitter)

– Stable service availability

– Future-proof design thanks to grid-less bandwidth allocation

Challenges: – Limited service reach due to missing universal

all-optical regeneration

Photonic services allows FaaS.


CESNET Photonic

Application examples:

– Interactive human collaboration

– High-definition video and cave-to-cave

• Over high definition video (e.g. 3D Full HD, 2K, 4K) broadcast ( http://www.ces.net/doc/press/2010/pr100618.html )

– Remote instrument control

– Comparison of atomic clocks

• Atomic clock comparison IPE Prague – BEV Vienna ( http://www.ces.net/doc/press/2010/pr100401.html )

– Ultra-stable frequency transfer


CESNET Photonic







Possible implementations: – Dark fiber

• Full spectrum available, freedom in deployed equipment

• Expensive, difficult putting into service and troubleshooting

– Dark channel • Reduction in cost, freedom in deployed equipment

• Possible interaction with parallel transmissions

• moderate putting into service and troubleshooting

– All-optical lambda • Minimal cost, simple troubleshooting and maintenance

• Unidirectional channels, noise and interaction with parallel transmissions


CESNET Photonic

CESNET Lambda End-to-End transparent service over dedicated DWDM channel.

Supports multidomain and multivendor environment.

Provides: – Dedicated transmission capacity

– Guarantee of latency and jitter

– High security and reliability


Implementations

Use of OpenDWDM photonic system developed by CESNET (CzechLight family) for extension of DWDM network to customer premises with lower cost.

Monitoring

Monitoring system for photonic devices “CLMon”.


CESNET Lambda

CzechLight Monitoring (CLMon) • being developed by CESNET

• supports CzechLight family devices (preamps, boosters, inline)

• Multivendor support – Cisco optical devices in testing

• Full alarm history

• Easy view for network operators on clickable map

• Multi-user access via web interface


CESNET Circuit

• End-to-End Ethernet connection

• Persistent, moderate latency connection

• Separation of data flows which belong to particular users (including C-VLAN taging)

• Multi-domain service – Designated for locations outside the reach of CESNET2

network.

– Carrier Ethernet service from other operators can be used as The Carrier Ethernet Access service (Carrier Ethernet 2.0).


Multi-domain Carrier Ethernet in CESNET

• Using EoMPLS and Provider Bridging (QinQ)

• Focus on:

– Support of Multidomain services

– Multivendor interoperability

• Running Carrier Ethernet lab

22

Network Architects Workshop Copenhagen, November 21th, 2012

CE in CESNET2 Network


• Simpler L2 switches as a the edge device • More demanding decisions moved to core PE routers • Can run in parallel with other advanced services or experimental services

(where CzechLight DWDM is used)

Multi-Domain CE


• Use of other operator’s Ethernet lines • Use of Connectivity Fault Management for

service monitoring

L2 Control Protocols


• L2 protocols are tunneled trough S-VLAN • Multi-vendor interoperability:

• Tunneling address 01:00:0C:CD:CD:D0 • PVST+ (Cisco) interworking with VSTP (Juniper) works except of VLAN ID 1

Ethernet CFM


• Levels 6 and 7 for customer’s CFM • Level 5 – E2E service monitoring • Level 4 – from CESNET edge to customer premises trough other operator’s

domain

Thank you for your attention

[email protected]

http://www.ces.net

mailto:[email protected]

http://www.ces.net/

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