Traffic separation
L3VPN or HQoS
Gustav Rydén
Strategic Product Manager
Istvan Honvari
Operative Product Owner
Aron Szentesi
Operative Product Owner
| 2021-03-25 | Commercial in Confidence | Page 1
Agenda
●Welcome
●Introduction
●HQoS
●L3VPN
●Wrap-up / Q&A
●Webinar topics
●Feedback poll
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Hierarchical Quality of Service
Typical use case
●Network sharing – more operators sharing the same network
●Corporate/Business service – more services on the same infrastructure
●Different RAN technologies – ensure fair bandwidth sharing
Hierarchy
●Still one egress port
●Several queues (set of 8 queues)
●2-level enqueuing phy
●VLAN → queue-set of 8 queues
●Priority → queue in the queue-set
● Scheduler
●Defines the precedence of these several queues Scheduler
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Flat vs Hierarchical
Shaper
Non-hierarchical QoS
●Priority bits (PCP) used for marking frames according to their importance phy
8 queues
●Different services can be provided up to 8 different traffic classes (TC)
Scheduler
Challenges to be solved
●Scenarios where PCP only is not sufficient
●VLAN based differentiation is also needed
Hierarchy
●Still one egress port phy
●Several queues (set of 8 queues)
●2-level enqueuing
●VLAN → queue-set of 8 queues
●Priority → queue in the queue-set Scheduler
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Hierarchical Quality Service – New features
Hierarchical scheduling VLAN
#1
●Queue-set (8 queues) – relevant for a VLAN group 8 queues
phy
●VLAN groups – relevant for the egress port
VLAN
#2
8 queues
Hierarchical shaping
VLAN
●VLAN group level #1
8 queues
●Port level phy
VLAN
#2
8 queues
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Implementation in MINI-LINK 6600/6366/6200
Up to 4-level hierarchy
●Nx8 queues with ordinary scheduling,
WRED/ColorDrop Queue Inner-VLAN Outer-VLAN Port
●1 or 2 additional levels Level 4 Level 3 Level 2 Level 1
Set of 8 queues Service 1
Queue mapping Operator 1
Set of 8 queues Service 2
●Based on VLAN ID + Priority
Egress
●S-VLAN Port
●S-VLAN and C-VLAN pair
Set of 8 queues Operator 2
New features
●Hierarchical scheduling
●Hierarchical shaping
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HQoS Node GUI support
Leaf node Scheduler Root node
Hierarchy tree visualization
●Helps to show the hierarchy and
parameters during configuration
VLAN mapping rule
Implicit any
Default node
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Transport technology selection: L2 vs L3VPN
Argumentation Transport technology selection
on L3VPN depends on
• Seamless transport (single transport • Services to be forwarded
technology E2E) • Topology (both physical and service)
• Shortest path to X2/Xn with scalable • Scalability
architecture
• And the operator’s preference (belief)
• Resiliency
• Traffic Engineering
• Easier OAM and troubleshooting
• Easier provisioning
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L3VPN in a MW Mobile Backhaul
Separate router L3VPN functions integrated in MW unit
implements L3VPN, uses MW network
as a L1 or L2 underlay
R
MINI-LINK
R
MINI-LINK
R R R R
R
MINI-LINK
R
MINI-LINK MINI-LINK
MINI-LINK
MINI-LINK
MINI-LINK
R R
R MINI-LINK
R R
MINI-LINK
R
R
MINI-LINK MINI-LINK MINI-LINK MINI-LINK
R
R
MINI-LINK
R
MINI-LINK
MINI-LINK
MINI-LINK
IP/MPLS IP/MPLS
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MPLS features
MINI-LINK 6600/6366/6200
Infrastructure Inter-AS options
● OSPFv2 ● Option A: plain IP/VLANs
● IS-IS ● Option B: per VPN label
● BFD (single- and multi-hop, BFD over LSP) ● Option C: Hierarchical label (seamless MPLS)
● OAM (MPLS OAM) Other services
● QoS (MPLS EXP classification/marking) Business VPN
Label distribution MBH IP VPN
● LDP
● RSVP-TE with Fast Reroute and Path Protection Full Part. Hub&
● Inter-area LSPs Mesh Mesh Spoke
Service Layer
BGP
● Route reflector client Transport Layer
● BGP Fast Reroute (APR) LDP Labeled BGP RSVP
● BGP-LU to support Seamless MPLS (H-LSP) LSP
● Multiprotocol Extensions for BGP-4
Service layer
● IPv4/IPv6 BGP/MPLS IP Virtual Private Networks, VPNs IGP IGP-multi IGP-multi
(RFC4364) flat area* instance* IP infrastructure
● PE-CE routing: Static route, OSPFv2, OSPFv3, eBGP IPv4 IPv6
● Multi-hop VPN
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Scalability considerations
Scalability targets: Flat design for IGP, LSP, and VPN routes
● Single area; full meshed LSPs and full meshed BGP
Network Router range IGP MPLS BGP sessions between PEs.
Small <100 Flat Flat No RR ● A network built in this way will then not scale to more than
Medium <300 Multi-area IGP Flat RR 50-100 nodes
Large Several 1000s Instance based H-MPLS/M-Hop H-RR
Architecture options:
● Flat design for IGP, LSP, and VPN routes
● Hierarchical design for IGP and VPN routes,
Hierarchical design for IGP and VPN routes,
but a flat LSP design but a flat LSP design
● Seamless MPLS (H-MPLS) ● Multiple IGP areas and full mesh of LSPs
● BGP route reflector for VPN routes
● Multi-Hop VPN
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Multi-Area IS-IS with Inter-Area LSPs
LSPs can be established end-to-end across a multi-area network
●For RSVP-TE using ERO expansion in RFC 3209
●For LDP using RFC 5283
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Multi AS scenarios
th th
Inter-AS options:
●Option A: plain IP/VLANs
ell site itch site
●Option B: per VPN label
●Option C: Hierarchical label (seamless MPLS) nlabele
pac ets
infrastr ct re options
pac ets
itho t
transport label
Multi-hop VPN ierarchical
abele
pac ets
ea less
●Border node terminates L3VPN domains both sides i e i
i ie rarchical i ierarchical
●Interworking (IP lookup) done within BR
i
ra itional
( ption )
i
( ption )
e
( ption )
i i
ltihop e i
( ote ltihop can be i ple ente base on the concept of nter option or )
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L3VPN ring protection
MINI-LINK 6600/6366/6200
rsvp-te trunk #1 (primary)
R
MINI-LINK 6600 node with
3PP R protection
Metro/Regional
R
3PP
3PP
Aggregation
R
3PP
R rsvp-te trunk #2 (backup)
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BGP-APR
●Multi-homed service layer
●Multi-hop BFD triggers switchover in case of SS-PE failure
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Customer deployments
R
R R
R R R
R R RR R
R
R R R
R 1G
R
MINI-LINK
R R 2Gbps
MINI-LINK
1+1LAG
MINI-LINK
R R
MINI-LINK
IS-IS L1 IS-IS L2
(MINI-LINK domain) (aggregation domain)
R
MINI-LINK
R R R
MINI-LINK
MINI-LINK
MINI-LINK 2Gbps
1+1LAG
R R
R R
MW ring with M-Hop MW tree with M-Hop VPN or Option A
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Q&A
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Webinar topics
Date Topics Planned Topics 2021
2021-01-28 MINI-LINK 6600 5G Transport Summit session
Security for transport networks
2021-02-11 MINI-LINK 6200
Demystifying SDN: Transport automation and Traffic control
2021-02-25 E-band and Multi-band booster E-shop + Portfolio & Commerce
2021-03-11 Synchronization in Transport AMI (Advanced Microwave Insight)
MIMO
2021-03-25 Traffic separation: L3VPN or HQoS
Slicing
Release 21:Q1 – MW, IP, Optical and Release 21:Qx – MW, IP, Optical and Fronthaul, ENM
2021-04-08
Fronthaul, ENM
… please s ggest!
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