Slide title minimum 48 pt Slide subtitle minimum 30 pt Service Resiliency - ITU-T SG15 Q9 Activities Ghani Abbas Ericsson 25 th.,June, 2012 Geneva Workshop

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Slide title minimum 48 pt Slide subtitle minimum 30 pt Service Resiliency - ITU-T SG15 Q9 Activities Ghani Abbas Ericsson 25 th.,June, 2012 Geneva Workshop - Disaster Relief Systems and Network Resilience and Recovery Slide 2 Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./0123456789:; ?@ABCDEFGHIJKLMNOPQRST UVWXYZ[\]^_`abcdefghijklmnopqrstuvwxy z{|}~ Do not add objects or text in the footer area Commercial in confidence | Ericsson AB 2010 | 2012-06-25 | Page 2 Topics Q9/15 Task Network Objectives and Requirements Approved Recommendations Protection Architectures Recommendations under development Network Restoration Protection schemes interworking and guidelines Summary Slide 3 Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./0123456789:; ?@ABCDEFGHIJKLMNOPQRST UVWXYZ[\]^_`abcdefghijklmnopqrstuvwxy z{|}~ Do not add objects or text in the footer area Commercial in confidence | Ericsson AB 2010 | 2012-06-25 | Page 3 Q9/15 Network Protection and Restoration Work - One of the task is addressing enhanceMENT to Transport equipment functionality Recommendations to provide Survivability capabilities as well as addressing multi-layer survivability interactions. - The work covers all transport technologies SDH, ATM, OTN, Ethernet and MPLS-TP including interaction with protection at data/packet layers Slide 4 Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./0123456789:; ?@ABCDEFGHIJKLMNOPQRST UVWXYZ[\]^_`abcdefghijklmnopqrstuvwxy z{|}~ Do not add objects or text in the footer area Commercial in confidence | Ericsson AB 2010 | 2012-06-25 | Page 4 Protection: Network Objectives and Requirements Protection against one (or more) defects/failures Protection switching to be completed in less than 50ms Protection switching is invoked by LOS and OAM defects Various architecture schemes linear, 1+1, 1:1, 1:n, uni and bi-directional, ring and mesh Revertive and non-revertive Automatic Protection Switching (APS) protocol APS messages are prioritized APS is exercised to ensure satisfactory operation External operator commands are supported Slide 5 Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./0123456789:; ?@ABCDEFGHIJKLMNOPQRST UVWXYZ[\]^_`abcdefghijklmnopqrstuvwxy z{|}~ Do not add objects or text in the footer area Commercial in confidence | Ericsson AB 2010 | 2012-06-25 | Page 5 Protection Switching - APPROVED Recommendations - Linear protection - Generic : G.808.1- OTN : G.873.1 - Ethernet : G.8031- MPLS-Tp: G.8131? - Ring Protection - Generic : G.808.2- OTN : G.873.2 - Ethernet : G.8032- MPLS-T : G.8132? Slide 6 Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./0123456789:; ?@ABCDEFGHIJKLMNOPQRST UVWXYZ[\]^_`abcdefghijklmnopqrstuvwxy z{|}~ Do not add objects or text in the footer area Commercial in confidence | Ericsson AB 2010 | 2012-06-25 | Page 6 1:1 and 1+1 Protection Architectures -Fast (sub 50ms) switching -Protects against fibre cuts and often interface cards failures Worker Fibres Protection Fibres Equipment AEquipment B Worker Fibres Protection Fibres Equipment AEquipment B 1 : 1 1+1 Slide 7 Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./0123456789:; ?@ABCDEFGHIJKLMNOPQRST UVWXYZ[\]^_`abcdefghijklmnopqrstuvwxy z{|}~ Do not add objects or text in the footer area Commercial in confidence | Ericsson AB 2010 | 2012-06-25 | Page 7 Ring Protection - Fast (sub 50ms) switching - Optimised protection for ring architectures Protection fibres Worker fibres Failure occurs X Slide 8 Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./0123456789:; ?@ABCDEFGHIJKLMNOPQRST UVWXYZ[\]^_`abcdefghijklmnopqrstuvwxy z{|}~ Do not add objects or text in the footer area Commercial in confidence | Ericsson AB 2010 | 2012-06-25 | Page 8 Current Work Shared Mesh protection Generic : G.smp- OTN: G.otnsmp Packet? Inter-working of currently ITU SG15 standardised Schemes Guidelines/Use cases of protection schemes Network scenarios and used cases for Ethernet Ring protection schemes Slide 9 Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./0123456789:; ?@ABCDEFGHIJKLMNOPQRST UVWXYZ[\]^_`abcdefghijklmnopqrstuvwxy z{|}~ Do not add objects or text in the footer area Commercial in confidence | Ericsson AB 2010 | 2012-06-25 | Page 9 Protection Interworking - InterworkinG of currently ITU SG15 standardised Schemes - eg. G.8032/ G.8031, G.873.1/G.8032 interworking etc - Guidelines/Use cases of protection schemes - Network scenarios and used cases for EtherNET protection schemes - focus on MBH applications and G.8032 and G.8031 scenarios Slide 10 Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./0123456789:; ?@ABCDEFGHIJKLMNOPQRST UVWXYZ[\]^_`abcdefghijklmnopqrstuvwxy z{|}~ Do not add objects or text in the footer area Commercial in confidence | Ericsson AB 2010 | 2012-06-25 | Page 10 Protection Interworking..1/2 G.8032/G.8031 Interworking Example Slide 11 Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./0123456789:; ?@ABCDEFGHIJKLMNOPQRST UVWXYZ[\]^_`abcdefghijklmnopqrstuvwxy z{|}~ Do not add objects or text in the footer area Commercial in confidence | Ericsson AB 2010 | 2012-06-25 | Page 11 Protection Interworking 2/2 G.8032 /G.873.1 Interworking Example Slide 12 Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./0123456789:; ?@ABCDEFGHIJKLMNOPQRST UVWXYZ[\]^_`abcdefghijklmnopqrstuvwxy z{|}~ Do not add objects or text in the footer area Commercial in confidence | Ericsson AB 2010 | 2012-06-25 | Page 12 Shared Mesh Protection (SMP) - Current status Q9/15 is developing a generic Recommendation for SMP The main objective for SMP is to reduce operating cost by sharing protection resources instead of dedicated protection resources SMP operates independent of control plane A technology specific ODU SMP protection scheme based on generic SMP is also being considered. Slide 13 Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./0123456789:; ?@ABCDEFGHIJKLMNOPQRST UVWXYZ[\]^_`abcdefghijklmnopqrstuvwxy z{|}~ Do not add objects or text in the footer area Commercial in confidence | Ericsson AB 2010 | 2012-06-25 | Page 13 1 protection segment is shared by multiple protection paths The protection connection should be configured to reserve protection resource in advance Switching activation is based on data plane SMP Concept Slide 14 Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./0123456789:; ?@ABCDEFGHIJKLMNOPQRST UVWXYZ[\]^_`abcdefghijklmnopqrstuvwxy z{|}~ Do not add objects or text in the footer area Commercial in confidence | Ericsson AB 2010 | 2012-06-25 | Page 14 A BC D EFG H IJ K Working Connection X Protecting Connection X Protecting Connection Y Working Connection Y LMN Protecting Connection Y Important Aspects of SMP Preemption:: If the working channel suffers failure and its setup priority is higher than current one on the protection channel, the channel on the protection gets chucked out! 1:N Protection: with multiple protection requests, the channel with highest preference level will take over. Over-subscription:: Each timeslot may be used by multiple connections Slide 15 Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./0123456789:; ?@ABCDEFGHIJKLMNOPQRST UVWXYZ[\]^_`abcdefghijklmnopqrstuvwxy z{|}~ Do not add objects or text in the footer area Commercial in confidence | Ericsson AB 2010 | 2012-06-25 | Page 15 Protection and Restoration Most existing networks use pre-planned protection Network resource centrally controlled Protection pre-allocated and predicable Restoration Initially sets up worker only Protection occurs dynamically on failure Effectively statistical and non-deterministic Protection Bandwidth is shared between many workers Generally Control Plane is involved in the restoration scheme Slide 16 Slide title minimum 32 pt (32 pt makes 2 rows Text and bullet level 1 minimum 24 pt Bullets level 2-5 minimum 20 pt !"#$%&'()*+,-./0123456789:; ?@ABCDEFGHIJKLMNOPQRST UVWXYZ[\]^_`abcdefghijklmnopqrstuvwxy z{|}~ Do not add objects or text in the footer area Commercial in confidence | Ericsson AB 2010 | 2012-06-25 | Page 16 Network Restoration Traditional protection is fixed Pre-calculated by a central manager Operation fixed and predictable Network equipment has no network topology awareness Restoration protection is dynamic Only worker traffic is set up Shared protection - protection calculated dynamically on failure Restoration is fundamentally different approach requiring Network topology discovery Routing algorithms Peer to peer signalling Traffic engineering More cost effective Protection Bandwidth is shared by many workers Slide 17 Slide title minimum 32 pt (32 pt makes 2 rows Text

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