Netmanias 기술문서: Carrier Ethernet 기술.Multicast & QoS

2008년9월3일
NMC Consulting Group(tech@netmanias.com)

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Multicast Service

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Multicast (IPTV) service
1.기존전통적인TPS 네트워크에서는IGMP와PIM 프로토콜을이용하여IPTV 방송을전달하였으며2.MPLS에서는P2MP LSP와RSVP-TE extension for P2MP를통해MPLS의Fast Convergence 장점을추가하여IPTV
방송을전달할수있게되었다.
3.Carrier Ethernet 기술로효과적인Multicast replication 및Fast convergence 기능을제공해야할것이다.
IGMPPIMEthernet MulticastIP MulticastRSVP-TE for P2MPMPLS P2MP LSPEthernetIPMPLS

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Market & System Requirement for Multicast Service
1. PBB + PLSB
2. PBB (+ STP)
Short Stubby dark blue
Market Requirement
.Multicast를지원해야하며Link, Node Failure시Fast Recovery를제공해야함
System Requirement
Short Stubby dark blue
뒤에서예시

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PBB+PLSB for Multicast (IPTV) service
ES1ES2ES3ES4ES5ES6ES7ES8ES9ES10ES11ES12ES13ES14ES17
ES15ES16ES18ES19ES20ES21ES22ES23ES24ES25
ES27ES26ES28ES29ES30ES31ES32ES33ES34ES35ES36ResidentialResidentialResidentialResidentialIPTV Headend
IGMP snoop/proxyIGMP snoop/proxyIGMP snoop/proxyIGMP snoop/proxyIGMP ReportIPTV streamI-SID = 100All IPTV channels(multicast stream from Headend)
Configure all PLSB edge: I-SID = 100 for IPTV stream (All IPTV channels)
DARI-SID = 100Active IPTV channels
(multicast stream from Headend)
IPTV streamIGMP ReportIS-IS convergencePLSB E-TREE for IPTV multicast

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QoS

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MEF 10.1 Traffic Management Model
UNIEVC1EVC2EVC3Ingress Bandwidth
Profile Per Ingress UNIUNIEVC1EVC2EVC3Ingress Bandwidth
Profile Per EVC1Ingress Bandwidth
Profile Per EVC2Ingress Bandwidth
Profile Per EVC3UNIEVC1CE-VLAN CoS 6Ingress Bandwidth Profile Per CoS ID 6CE-VLAN CoS 4CE-VLAN CoS 2Ingress Bandwidth Profile Per CoS ID 4Ingress Bandwidth Profile Per CoS ID 2EVC2Port-basedPort/VLAN-basedPort/VLAN/CoS-based1.MEF에서는Enterprise 서비스에대해서(1) UNI Port 기반의대역폭제어(2) EVC 기반의대역폭제어(3) EVC 내에COS 기반의대역폭제어를정의하고있다.
2.또한COS 기반의대역폭제어와EVC 기반의대역폭제어를동시에제공하는사업자도있으며(뒤에서소개)
3.따라서PBT 장비는MEF에서정의하고있는기본적인기능이외에2번과같은H-QoS 기능도제공해야한다.

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Multi-Service SLA
.Multi-Service SLA.Customer sharing one SLA between Internet
and VPN services.
.Internet traffic can burst if VPN is below CIR.
.Example:
12Mb/sAlcatel’s H-QoS Solution:Masergy’s Deployment Model:
Sharing SLAVPN: CIR = 6Mb/s, PIR = 12Mb/sInternet: PIR = 12Mb/sIP
VPN

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Market & System Requirement for QoS
Short Stubby dark blue
뒤에서예시
1. Per UNI Port Bandwidth Control
2. Per EVC Bandwidth Control
3. Per COS Bandwidth Control
4. H-QOS: Per COS + Per EVC Bandwidth Control
Short Stubby dark blue
Market Requirement
.MEF에서정의하고있는Enterprise 서비스에대해서(1) UNI Port 기반의대역폭제어(2) EVC
기반의대역폭제어(3) EVC 내에COS 기반의대역폭제어를지원해야함(1, 2, 3 Combination
지원)
System Requirement

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H-QoS on PBT node for Enterprise service
S-VID=10Port 1MSANCO-SWAGG-SWER/PE
METRO-SWE-LINEInternetS-VID=10E-LINE serviceInternet serviceInternet(C-VLAN=4093)
Enterprise APIR=max, PL=2CIR=0PIR=max, PL=3CIR=2Mb/sPIR=5Mb/s, PL=3CIR=5Mb/sPIR=2Mb/s, PL=4CIR=2Mb/sE-LINE(C-VLAN=Customer VLAN)
PIR=max, PL=1CIR=0S-VLAN = 10Voice (COS=5)
Video (COS=4)
CriticalData (COS=2)
PriorityData (COS=1)
BE Internet (COS=0)
OverallBW = 12Mb/s(3) Bandwidth Control per Subscriber(1) Bandwidth Control per CoS in Subscriber(2) SPQ/WFQ in Subscriber(4) 802.1p copy from PB to PBB packet

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End of Document