Netmanias 기술문서: Carrier Ethernet 기술.TPS Backhaul Connectivity

2008년2월11일
NMC Consulting Group(tech@netmanias.com)

2
TPS Backhaul Connectivity Model: VLAN Assignment Scheme and BNG Issues
TPS 백홀망에적용되기위해DSL Forum TR-101에서제시된다양한Connectivity model을지원해야한다.
1. VLAN Assignment Scheme;
Per-Service VLANPer-Subscriber VLANCombination2. Service Edge Scheme;
Single BNG (Single BRAS)
Multiple BNG (BRAS, ERs)
BRASSingle BNGVoiceTVInternetPer-Subscriber VLAN (1:1 VLAN)
Shared MC-VLANRG
BRASVoiceTVInternetPer-Subscriber VLAN (1:1 VLAN, QinQ)
Shared MC-VLANRG
ER (PIM)
InternetVoIPVoDIP-TV (Multicast)
All Unicast Traffic-Internet-VoIP-VoDIP-TV (Multicast)
Bell South (AT&T)
Dual BNGPer-Subscriber VLAN (1:1 VLAN, All Unicast Traffic)
BRASVoiceTVInternetPer-Service VLAN (Internet VLAN)
Per-Service VLAN (IP-TV/Multicast VLAN)
RG
ERInternetDual BNGPer-Service VLAN (N:1 VLAN)
Per-Service VLAN (VoIP VLAN)
Per-Service VLAN (VoD VLAN)
VoIPVoDIP-TV (Multicast)
BT, BellSouth, SBC*, CHT Telecom Italia, Versatel, TelefonicaTPS Backhaul Requirements.Subscriber Isolation (Security/Hair-Pin)
.Service Separation.Broadcast Handling.Scalability: MAC Learning, VLAN ID
.DSL Line Identification and Traceability.Multicast.Configuration ConsistencyVoiceTVInternetRGBRASERDSLAM/OLT?
TPS Backhaul COPOPHome

3
Per-Subscriber VLAN (1:1)
Per-Service VLAN (N:1)
NE Vendor
AT&T (BellSouth)
.Per-Subscriber VLAN (PPPoE) + Multicast VLAN
-
RBAK
Chunghwa Telecom
.Per-Subscriber VLAN (for Security)
FT
.Per-Service VLAN
Telecom Italia
.Per-Service VLAN 1: Unicast VLAN (Internet, VoIP, VoDover
PPPoE: BRAS)
.Per-Service VLAN 2: Multicast VLAN => Dual BNG ?
.RD와DSLAM간: 2 PVCs
Telefonica
.Per-Service VLAN
.VLAN ID (DSLAM ID) Translation at AGG SW (BRAS facing port)
.H-VPLS Backhaul
Riverstone
Tele2 (Versatel)
.Per-Service VLAN (Internet, VoIP, VoD, Multicast)
SBC
.RG와DSLAM간: Per-Subscriber VLAN
.Per-Service & Per-DSLAM VLAN (QinQ)
.Multiple BNG (BRAS, VoDRouter,)
.MPLS/VPLS Backhaul
ALU
BT
.Per-Subscriber VLAN (QinQ): Internet (BRAS)
.Per-Service VLAN: VoIP (Voice PE)
Belgacom
.RG와DSLAM간: Per-Subscriber VLAN
.Per-Service & Per-DSLAM VLAN (QinQ)
.Multiple BNG (BRAS, VoDRouter,)
.MPLS/VPLS Backhaul
ALU
Per-Subscriber VLAN
Per-Service VLAN
IP Address per Home
Single IP Address
Multiple IP Addresses (one per service)
MAC Learning at AGG SW
One Customer MAC per Home
Multiple Customer MAC per Home
User Isolation (Security)
One Broadcast Domain per Customer
Private VLAN (DSLAM, CO SW, AGG SW)
Broadcast Storm
One Broadcast Domain per Customer
Per-DSLAM VLAN (S-VID)
DSL Line Identification and Traceability (IP
address .DSLAM port간매핑)
Unique VLAN per Subscriber
-AAA: Intermediate Agent (C-VID, S-VID), NAD-ID,
NAS-Port-ID at BRAS
-DHCP Relay: Option 82 (C-VID, S-VID), GI address
at BRAS
Option 82 at DSLAM
DSLAM Provisioning (Per-Subscriber)
Option 82 at DSLAM
Service Edge
Single BNG
Dual BNG
Multiple (Dual) BNG
사업자별로Connectivity 모델이상이하며, 따라서장비벤더는1:1 VLAN, N:1 VLAN, Combination 모두를제공하고있음
Per-Subscriber VLAN vs. Per-Service VLAN

4
Per-Subscriber VLAN
Solution:
Stacked VLAN(QinQ/PB)
BRASDSLAM(port to VLAN IDMapping)
VLAN=1VLAN=2VLAN=3VLAN=4VLAN=5VLAN=6VLAN=7VLAN=8VoiceTVInternetRG
BRASDSLAM-C-VID: DSL port to C-VID Mapping-S-VID: DSLAN IDVoiceTVInternetRGS-VID=1/C-VID=1S-VID=1/C-VID=2S-VID=2/C-VID=1S-VID=2/C-VID=2S-VID=3/C-VID=1S-VID=3/C-VID=2S-VID=4/C-VID=1S-VID=4/C-VID=2C-VID=1C-VID=2C-VID=1C-VID=2C-VID=1C-VID=2C-VID=1C-VID=2S-VID=1S-VID=2S-VID=3S-VID=4.User Isolation: Per-Subscriber VLAN.Traceability (IP-DSLAM Port): Per-Subscriber VLAN (VLAN ID)
.Broadcast storm: Per-Subscriber VLAN (Broadcast Domain per Subscriber)
.MAC Learning (AGG SW): Learning or Not.Problem: VLAN ID Scalability (4K) !!!
.Problem: Provisioning Consistency !!! Per RG.User Isolation: Per-Subscriber VLAN.Traceability (IP-DSLAM Port): Per-Subscriber VLAN (S-VID/C-VID: DSLAM ID/Port ID)
.Broadcast storm: Per-Subscriber VLAN (Broadcast Domain per Subscriber)
.MAC Learning (AGG SW): Learning or Not.VLAN ID Scalability: 16M Subscribers.Problem: Provisioning Consistency !!! Per DSLAM
BRASVoiceTVInternetRGC-VID=1C-VID=2C-VID=1C-VID=2C-VID=1C-VID=2C-VID=1C-VID=2S-VID=1S-VID=2S-VID=1S-VID=2Solution: VLAN Translation.User Isolation: Per-Subscriber VLAN.Traceability: Per-Subscriber VLAN (S-VID/C-VID: DSLAM ID/Port ID)
.Broadcast storm: Per-Subscriber VLAN (Broadcast Domain per Subscriber)
.MAC Learning (AGG SW): Learning or Not.VLAN ID Scalability: 16M Subscribers.Provisioning Consistency: VLAN Translation at AGG SWDistinct S-VID/C-VID Pair in BHTelefonica: TLATAM Metro Evolution Proposal v1.1There is the option to pop the outer tag fromthe traffic coming from the DSLAM and push a
different outer tag in the BRAS facing port (VLAN
ID translation). This functionality enables the
utilization of the same VLAN ID for Internet access
in all DSLAMs, and can make DSLAM provisioning
easier. Additionally, each VSI can be configured
with MAC limiting using the flood option to reduce
the MAC address table utilization.
VLAN Translation TableInputOutputPortS-VIDC-VIDS-VIDC-VID111111112112121121122122211211212212221221222222AGG-SW는수신포트와S-VID를보고,
출력S-VID를rewrite함DSLAM-C-VID: DSL port to C-VID Mapping-S-VID: DSLAN IDS-VID=11/C-VID=1S-VID=11/C-VID=2S-VID=12/C-VID=1S-VID=12/C-VID=2S-VID=21/C-VID=1S-VID=21/C-VID=2S-VID=22/C-VID=1S-VID=22/C-VID=2

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Per-Service VLAN (1): Single Tagged VLAN (802.1Q)
AGG-SW는수신포트와VID를보고, 출력VID를rewrite하고출력포트를결정함
BRASDSLAMVoiceTVInternetRG
VLAN=1 (Internet)
VLAN=2 (VoIP)
VLAN=4 (Multicast)
VLAN=4 (Multicast VLAN)
.User Isolation: Private VLAN (Broadcast Domain = All Backhaul)
.Traceability (IP-DSLAM Port): Option 82 at DSLAM (DSLAM port, DSLAM ID)
.Broadcast storm: Broadcast Domain = All Backhaul.MAC Learning (AGG SW): AGG SW는“(N-1) x #of RG”의MAC을Learning해야함.
.Provisioning Consistency: The Same ConfigurationVLAN=1 (Internet)
VLAN=1VLAN=2VLAN=4VLAN=2 (VoIP)
VLAN=4 (Multicast)
BRASCO 1VoiceTVInternetVLAN=4 (Multicast VLAN)
VLAN=1001VLAN=2001
VLAN=1002VLAN=2002CO IDService ID.User Isolation: Private VLAN at DSLAM, CO SW (Broadcast Domain = Per-CO)
.Traceability (IP-DSLAM Port): Option 82 at DSLAM (DSLAM port, DSLAM ID)
.Broadcast storm: Broadcast Domain = Per-CO.MAC Learning (AGG SW): AGG SW는“(N-1) x #of RG”의MAC을Learning해야함.
.Provisioning Consistency: Unique per DSLAMVLAN=1001VLAN=1002VLAN=4VLAN=1001VLAN=1002VLAN=4VLAN=1001VLAN=1002VLAN=4VLAN=1001VLAN=1002VLAN=4VLAN=2001VLAN=2002VLAN=4VLAN=2001VLAN=2002VLAN=4VLAN=2001VLAN=2002VLAN=4VLAN=2001VLAN=2002VLAN=4VLAN 1001VLAN 1002RGBRASVoiceTVInternetVLAN=4 (Multicast VLAN)
VLAN=1001VLAN=2001
VLAN=1002VLAN=2002DSLAM IDService IDVLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN 1VLAN 2RGPort1Port3Port4.User Isolation: Private VLAN at DSLAM, CO SW (Broadcast Domain = Per-CO)
.Traceability (IP-DSLAM Port): Option 82 at DSLAM (DSLAM port, DSLAM ID)
.Broadcast storm: Broadcast Domain = Per-CO.MAC Learning (AGG SW): Not Learning.Provisioning Consistency: The Same ConfigurationCO 2CO 1CO 2VersatelVLAN XC TableInputOutputPortVIDPortVID1131001124100221320012242002CO 마다VLAN을다르게설정Solution: VLAN XC

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Per-Service VLAN (2): Stacked VLAN (802.1ad)
BRASDSLAMVoiceTVInternetRG
VLAN=1 (Internet)
VLAN=2 (VoIP)
VLAN=4 (Multicast)
VLAN=4 (Multicast VLAN)
.User Isolation: Private VLAN at DSLAM, CO SW and AGG SW (Broadcast Domain = All Backhaul)
.Traceability (IP-DSLAM Port): Option 82 at DSLAM (DSLAM port, DSLAM ID)
.Broadcast storm: Broadcast Domain = All Backhaul.MAC Learning (AGG SW): AGG SW는“(N-1) x #of RG”의MAC을Learning해야함.
.Provisioning Consistency:
VLAN=1 (Internet)
VLAN=1VLAN=2VLAN=4VLAN=2 (VoIP)
VLAN=4 (Multicast)
BRAS(Internet)
DSLAM 1VoiceTVInternetRGVLAN=4 (Multicast VLAN)
VLAN=1
DSLAM 2DSLAM 3DSLAM 4VLAN=2VLAN=4S-VID=1001S-VID=1002S-VID=1001/C-VID=1S-VID=1002/C-VID=1S-VID=1003/C-VID=1S-VID=1004/C-VID=1VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4S-VID=1001/C-VID=2S-VID=1002/C-VID=2S-VID=1003/C-VID=2S-VID=1004/C-VID=2ER/PE(VoIP)
PIMRouter.User Isolation: Private VLAN at DSLAM (Broadcast Domain = Per-DSLAM)
.Traceability (IP-DSLAM Port): Option 82 at DSLAM (DSLAM port, DSLAM ID)
.Broadcast storm: Broadcast Domain = Per-DSLAM.MAC Learning (AGG SW): AGG SW는“(N-1) x #of RG”의MAC을Learning해야함.
.Provisioning Consistency: Unique Per DSLAMBRAS(Internet)
DSLAM 1VoiceTVInternetRGVLAN=4 (Multicast VLAN)
VLAN=1
DSLAM 2DSLAM 3DSLAM 4VLAN=2VLAN=4S-VID=1S-VID=2S-VID=1001/C-VID=1S-VID=1002/C-VID=1S-VID=1003/C-VID=1S-VID=1004/C-VID=1VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4S-VID=1001/C-VID=2S-VID=1002/C-VID=2S-VID=1003/C-VID=2S-VID=1004/C-VID=2ER/PE(VoIP)
PIMRouterPort1Port3Port4.User Isolation: Private VLAN at DSLAM (Broadcast Domain = Per-DSLAM)
.Traceability (IP-DSLAM Port): Option 82 at DSLAM (DSLAM port, DSLAM ID)
.Broadcast storm: Broadcast Domain = Per-DSLAM.MAC Learning (AGG SW): Not Learning.Provisioning ConsistencySolution:
Stacked VLAN(QinQ/PB)
Outer-tag (S-VID) = DSLAM IDInner-tag (C-VID) = ServiceVLAN XC TableInputOutputPortS-VIDC-VIDPortS-VIDC-VID111310011112410012121310021122410022211310031212410032221310041222410042Solution: VLAN XCAGG-SW는(1) 수신포트와S-VID를보고,
출력S-VID를rewrite하고(2) 수신포트와C-VID를보고,
출력포트를결정함

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MPLS at TPS Backhaul Network
BRASDSLAM(C-VID: port to C-VID
Mapping)
(S-VID: DSLAN ID)
VoiceTVInternetRGC-VID=1C-VID=2C-VID=1C-VID=2C-VID=1C-VID=2C-VID=1C-VID=2S-VID=1S-VID=2S-VID=1S-VID=2BRAS(Internet)
DSLAM 1VoiceTVInternetRGVLAN=4 (Multicast VLAN)
VLAN=1
DSLAM 2DSLAM 3DSLAM 4VLAN=2VLAN=4S-VID=1S-VID=2S-VID=1001/C-VID=1S-VID=1002/C-VID=1S-VID=1003/C-VID=1S-VID=1004/C-VID=1VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4S-VID=1001/C-VID=2S-VID=1002/C-VID=2S-VID=1003/C-VID=2S-VID=1004/C-VID=2ER/PE(VoIP)
PIMRouterPort1Port3Port4
BRASDSLAM(C-VID: port to C-VID
Mapping)
(S-VID: DSLAN ID)
VoiceTVInternetRGC-VID=1C-VID=2C-VID=1C-VID=2C-VID=1C-VID=2C-VID=1C-VID=2S-VID=1S-VID=2S-VID=1S-VID=2BRAS(Internet)
DSLAM 1VoiceTVInternetRGVLAN=4 (Multicast VLAN)
VLAN=1
DSLAM 2DSLAM 3DSLAM 4VLAN=2VLAN=4S-VID=1S-VID=2S-VID=1001/C-VID=1S-VID=1002/C-VID=1S-VID=1003/C-VID=1S-VID=1004/C-VID=1VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4S-VID=1001/C-VID=2S-VID=1002/C-VID=2S-VID=1003/C-VID=2S-VID=1004/C-VID=2ER/PE(VoIP)
PIMRouterPort1Port3Port4Native Ethernet
.1:1 VLAN, N:1
VLAN의Connectivity
model을그대로유지하면서(Ethernet
Connectivity over
MPLS),
.MPLS 기술을통해Reliability를보강함.
TPS Backhaul Connectivity.Subscriber Isolation (Security/Hair-Pin)
.Service Separation.Broadcast Handling.Scalability: MAC Learning, VLAN ID
.DSL Line Identification and Traceability.Multicast.Configuration Consistency.Reliability: STP/RSTP/MSTPTPS Backhaul Connectivity.Subscriber Isolation (Security/Hair-Pin)
.Service Separation.Broadcast Handling.Scalability: MAC Learning, VLAN ID
.DSL Line Identification and Traceability.Multicast.Configuration ConsistencyMPLS Resiliency.EoMPLS (MPLS FRR)
.PW Redundancy.PW Redundancy + MC-LAG.H-VPLS/-Dual-homed H-VPLSMPLS BackhaulDSLAM과BRAS는Backhaul에MPLS가도입된것을모름즉, DSLAM과BRAS가Backhaul port쪽으로MPLS를지원할필요가없음.
Ethernet BackhaulMPLS Backhaul

8
MPLS at TPS Backhaul Network
Cisco 1:1 VLAN over EoMPLS Backhaul
Cisco N:1 VLAN over EoMPLS Backhaul
Telefonica: N:1 VLAN over H-VPLS BackhaulAlcatel: N:1 VLAN over H-VPLS Backhaul
Belgacom: N:1 VLAN over MPLS

9
PBT at TPS Backhaul Network
BRASDSLAM(C-VID: port to C-VID
Mapping)
(S-VID: DSLAN ID)
VoiceTVInternetRGC-VID=1C-VID=2C-VID=1C-VID=2C-VID=1C-VID=2C-VID=1C-VID=2S-VID=1S-VID=2S-VID=1S-VID=2BRAS(Internet)
DSLAM 1VoiceTVInternetRGVLAN=4 (Multicast VLAN)
VLAN=1
DSLAM 2DSLAM 3DSLAM 4VLAN=2VLAN=4S-VID=1S-VID=2S-VID=1001/C-VID=1S-VID=1002/C-VID=1S-VID=1003/C-VID=1S-VID=1004/C-VID=1VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4S-VID=1001/C-VID=2S-VID=1002/C-VID=2S-VID=1003/C-VID=2S-VID=1004/C-VID=2ER/PE(VoIP)
PIMRouterPort1Port3Port4
BRASDSLAM(C-VID: port to C-VID
Mapping)
(S-VID: DSLAN ID)
VoiceTVInternetRGC-VID=1C-VID=2C-VID=1C-VID=2C-VID=1C-VID=2C-VID=1C-VID=2S-VID=1S-VID=2S-VID=1S-VID=2BRAS(Internet)
DSLAM 1VoiceTVInternetRGVLAN=4 (Multicast VLAN)
VLAN=1
DSLAM 2DSLAM 3DSLAM 4VLAN=2VLAN=4S-VID=1S-VID=2S-VID=1001/C-VID=1S-VID=1002/C-VID=1S-VID=1003/C-VID=1S-VID=1004/C-VID=1VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4VLAN=1VLAN=2VLAN=4S-VID=1001/C-VID=2S-VID=1002/C-VID=2S-VID=1003/C-VID=2S-VID=1004/C-VID=2ER/PE(VoIP)
PIMRouterPort1Port3Port4Native Ethernet
.1:1 VLAN, N:1
VLAN의Connectivity
model을그대로유지하면서(Ethernet
Connectivity over
PBT),
.PBT기술을통해Reliability를보강함.
TPS Backhaul Connectivity.Subscriber Isolation (Security/Hair-Pin)
.Service Separation.Broadcast Handling.Scalability: MAC Learning, VLAN ID
.DSL Line Identification and Traceability.Multicast.Configuration Consistency.Reliability: STP/RSTP/MSTPTPS Backhaul Connectivity.Subscriber Isolation (Security/Hair-Pin)
.Service Separation.Broadcast Handling.Scalability: MAC Learning, VLAN ID
.DSL Line Identification and Traceability.Multicast.Configuration ConsistencyPBT Resiliency.PBT Protection (50ms)
.Dual-homed PBT.Dual-homed PBT + MC-LAGPBT BackhaulDSLAM과BRAS는Backhaul에PBT가도입된것을모름즉, DSLAM과BRAS가Backhaul port쪽으로PBT를지원할필요가없음.
Ethernet BackhaulPBT Backhaul

10
Market & System Requirement for TPS Backhaul Connectivity
1. Per-Subscriber VLAN (1:1 VLAN)
2. Per-Service VLAN (N:1 VLAN)
3. Combination (Per-Subscriber + Per-Service)
Market Requirement
.DSL Forum TR-101에서제시하고있는TPS 백홀망적용을위한다양한Connectivity Model을지원해야함
.TPS 백홀망에적용될때PBT 장비는Customer MAC learning을하지않는연결구조를제공할수있어야함
.Configuration Consistency가가능한구조이어야함
.N:1 VLAN 경우Broadcast domain을최소화할수있어야함
System Requirement
Short Stubby dark blue
Short Stubby dark blue
뒤에서예시

11
PBT를적용한TPS Backhaul 망구조(예시1)
PBB-TE TrunkI-SID4001I-SID3001PBB-TE TrunkI-SID2001I-SID1001S-VLAN 10C-VID 1C-VID 2S-VLAN 11C-VID 1C-VID 2S-VLAN 10C-VID 1C-VID 2S-VLAN 11C-VID 1C-VID 2C-VID 1C-VID 2C-VID 1C-VID 2C-VID 1C-VID 2C-VID 1C-VID 2
C-VID=1C-VID=2S-VID=10C-VID=1C-VID=2S-VID=11Port 1
C-VID=1C-VID=2S-VID=10C-VID=1C-VID=2S-VID=11Port 2RGDSLAMCO-SW1AGG-SWBRASPort 3S-VLAN 10C-VID 1DSLAM PortC-VID 2DSLAM IDS-VLAN 11C-VID 1C-VID 2S-VLAN 10C-VID 1C-VID 2S-VLAN 11C-VID 1C-VID 2HISVoIPVoDS-VID=10S-VID=11S-VID=10S-VID=11S-VID=101S-VID=211S-VID=310S-VID=411S-VLAN 101S-VLAN 211S-VLAN 310S-VLAN 411DSLAM PortDSLAM IDPort 1Port 2Port 1Port 2CO-SW2Per-Subscriber VLAN (1:1 VLAN, Single BNG)
Per-Subscriber VLAN
.No Broadcast Storm.DSL Line Identification and
Traceability (IP-to-DSLAM
Port) 확보:
DSLAM Configuration Consistency확보: VLAN Translation
at AGG SWNo Customer MAC Learning:
I-SID : Output Port = 1:1 매핑CO-SW Configuration Consistency
이슈: DSLAM별서로다른I-SID 할당문제(AGG-SW에서unique한I-SID
할당)

12
PBT를적용한TPS Backhaul 망구조(예시1)
C-VID=1C-VID=2S-VID=10C-VID=1C-VID=2S-VID=11Port1
C-VID=1C-VID=2S-VID=10C-VID=1C-VID=2S-VID=11Port2RGDSLAMCO-SW1AGG-SWBRASPort3S-VID=10S-VID=11S-VID=10S-VID=11S-VID=101S-VID=211S-VID=310S-VID=411VLAN Translation TableInputOutputI-SIDS-VIDS-VID100110101200111211300110310400111411VLAN Translation TableInputOutputPortS-VIDS-VID310110311111321010321111Port1Port2Port1Port2Port1, S-VLAN=10EFP300I-SID1001I-SID1001I-SID2001Port2, S-VLAN=11EFP301I-SID2001Port1, S-VLAN=10EFP302I-SID3001Port2, S-VLAN=11EFP303I-SID4001I-SID3001I-SID4001Port1I-SID1001I-SID2001Port3Port2Port1I-SID3001I-SID4001Port2I-SID1001I-SID2001I-SID3001I-SID4001Port3, S-VLAN=101Port3, S-VLAN=211Port3, S-VLAN=310Port3, S-VLAN=411EFP300EFP301EFP302EFP303VLANTranslationVLANTranslationVLANTranslationVLANTranslationCO-SW2CO-SW1CO-SW2AGG-SWCO-SW1CO-SW2AGG-SWEFP DefinitionInput (EFP)OutputPortS-VIDEVC (I-SID)
3101300321130133013023411303EFP Definition: CO-SW1Input (EFP)OutputPortS-VIDEVC (I-SID)
11010012112001EFP Definition: CO-SW2Input (EFP)OutputPortS-VIDEVC (I-SID)
11030012114001VLANTranslationVLANTranslationVLANTranslationVLANTranslationUpstreamDownstream

13
PBT를적용한TPS Backhaul 망구조(예시2)
PBB-TE TrunkPBB-TE TrunkI-SID2001I-SID1001S-VLAN 10C-VID 1C-VID 2S-VLAN 11C-VID 1C-VID 2S-VLAN 10C-VID 1C-VID 2S-VLAN 11C-VID 1C-VID 2C-VID 1C-VID 2C-VID 1C-VID 2C-VID 1C-VID 2C-VID 1C-VID 2DSLAM Port
C-VID=1C-VID=2S-VID=10C-VID=1C-VID=2S-VID=11Port 1
C-VID=1C-VID=2S-VID=10C-VID=1C-VID=2S-VID=11Port 2RGDSLAMCO-SW1AGG-SWBRASPort 3S-VLAN 10C-VID 1DSLAM PortC-VID 2DSLAM IDS-VLAN 11C-VID 1C-VID 2S-VLAN 10C-VID 1C-VID 2S-VLAN 11C-VID 1C-VID 2HISVoIPVoDS-VLAN 101S-VLAN 211S-VLAN 310S-VLAN 411S-VID=10S-VID=11S-VID=10S-VID=11S-VID=101S-VID=211S-VID=310S-VID=411DSLAM IDPort 1Port 2Port 1Port 2CO-SW2Per-Subscriber VLAN (1:1 VLAN, Single BNG)
Downstream 트래픽에대해서VLAN XC 지원: I-SID에출력포트가2개가되므로MAC learning 없이출력포트결정을위해VLAN XC
지원CO-SW Configuration Consistency
이슈: DSLAM별에서CO별서로다른I-
SID 할당으로문제를개선함Per-Subscriber VLAN
.No Broadcast Storm.DSL Line Identification and
Traceability (IP-to-DSLAM
Port) 확보:
DSLAM Configuration Consistency확보: VLAN Translation
at AGG SWNo Customer MAC Learning:
I-SID: Port = 1:1 매핑

14
PBT를적용한TPS Backhaul 망구조(예시2)
C-VID=1C-VID=2S-VID=10C-VID=1C-VID=2S-VID=11Port1
C-VID=1C-VID=2S-VID=10C-VID=1C-VID=2S-VID=11Port2RGDSLAMCO-SW1AGG-SWBRASPort3S-VID=10S-VID=11S-VID=10S-VID=11S-VID=101S-VID=211S-VID=310S-VID=411VLAN Translation TableInputOutputI-SIDS-VIDS-VID100110101100111211200110310200111411VLAN Translation TableInputOutputPortS-VIDS-VID310110311111321010321111Port1Port2Port1Port2Port1, S-VLAN=10I-SID1001Port2, S-VLAN=11Port1, S-VLAN=10Port2, S-VLAN=11I-SID2001Port1I-SID1001Port2Port1I-SID2001Port2I-SID1001I-SID2001Port3, S-VLAN=101Port3, S-VLAN=211Port3, S-VLAN=310Port3, S-VLAN=411EFP300EFP302VLANTranslationVLANTranslationCO-SW2CO-SW1CO-SW2AGG-SWCO-SW1CO-SW2AGG-SWEFP300I-SID1001EFP302I-SID2001VLANXCVLANXCVLAN XC Table: CO-SW1InputOutputI-SIDS-VIDPort10011011001112VLAN XC Table: CO-SW2InputOutputI-SIDS-VIDPort20011012001112EFP Definition: CO-SW1Input (EFP)OutputPortS-VIDEVC (I-SID)
11010012111001EFP Definition: CO-SW2Input (EFP)OutputPortS-VIDEVC (I-SID)
11020012112001EFP DefinitionInput (EFP)OutputPortS-VIDEVC (I-SID)
31011001321110013301200134112001Port3VLANTranslationVLANTranslationUpstreamDownstream

15
PBT를적용한TPS Backhaul 망구조(예시3)
C-VID 1C-VID 2C-VID 1C-VID 2C-VID 1C-VID 2C-VID 1C-VID 2DSLAM PortPBB-TE TrunkPBB-TE TrunkI-SID1000I-SID1000
C-VID=1C-VID=2S-VID=10C-VID=1C-VID=2S-VID=11Port 1
C-VID=1C-VID=2S-VID=10C-VID=1C-VID=2S-VID=11Port 2RGDSLAMCO-SW1AGG-SWBRASPort 3S-VLAN 10C-VID 1DSLAM PortC-VID 2DSLAM IDS-VLAN 11C-VID 1C-VID 2S-VLAN 10C-VID 1C-VID 2S-VLAN 11C-VID 1C-VID 2HISVoIPVoDS-VLAN 101S-VLAN 211S-VLAN 310S-VLAN 411S-VID=10S-VID=11S-VID=10S-VID=11S-VID=101S-VID=211S-VID=310S-VID=411DSLAM IDPort 1Port 2Port 1Port 2S-VLAN 10C-VID 1C-VID 2S-VLAN 11C-VID 1C-VID 2S-VLAN 10C-VID 1C-VID 2S-VLAN 11C-VID 1C-VID 2CO-SW2Per-Subscriber VLAN (1:1 VLAN, Single BNG)
Per-Subscriber VLAN
.No Broadcast Storm.DSL Line Identification and
Traceability (IP-to-DSLAM
Port) 확보:
DSLAM Configuration Consistency확보: VLAN Translation at
AGG SWNo Customer MAC Learning:
I-SID: Port = 1:1 매핑Downstream 트래픽에대해서VLAN XC 지원: I-SID에출력포트가2개가되므로MAC learning 없이출력포트결정을위해VLAN
XC 지원CO-SW Configuration Consistency
확보: I-SID Translation at AGG-SW를통해CO별로동일I-SID 할당

16
PBT를적용한TPS Backhaul 망구조(예시3)
C-VID=1C-VID=2S-VID=10C-VID=1C-VID=2S-VID=11Port1
C-VID=1C-VID=2S-VID=10C-VID=1C-VID=2S-VID=11Port2RGDSLAMCO-SW1AGG-SWBRASPort3S-VID=10S-VID=11S-VID=10S-VID=11S-VID=101S-VID=211S-VID=310S-VID=411VLAN Translation TableInputOutputI-SIDS-VIDS-VID100110101100111211200110310200111411VLAN Translation TableInputOutputPortS-VIDS-VID310110311111321010321111Port1Port2Port1Port2Port1, S-VLAN=10I-SID1000Port2, S-VLAN=11Port1, S-VLAN=10Port2, S-VLAN=11I-SID1000Port1I-SID1000Port3Port2Port1I-SID1000Port2I-SID1000I-SID1000Port3, S-VLAN=101Port3, S-VLAN=211Port3, S-VLAN=310Port3, S-VLAN=411EFP300EFP301VLANTranslationVLANTranslationCO-SW2CO-SW1CO-SW2AGG-SWCO-SW1CO-SW2AGG-SWEFP300I-SID1000EFP300I-SID1000VLANXCVLANXCVLAN XC Table: CO-SW1, 2InputOutputI-SIDS-VIDPort10001011000112VLANTranslationEFP Definition: CO-SW1, 2Input (EFP)OutputPortS-VIDEVC (I-SID)
11010002111000EFP DefinitionInput (EFP)OutputPortS-VIDEVC (I-SID)
31011001321110013301200134112001I-SIDTranslationI-SID1001I-SIDTranslationI-SID2001VLANTranslationI-SIDTranslationI-SIDTranslationI-SID1001I-SID2001I-SID Translation TableInputOutputTunnelI-SIDI-SIDA10001001B10002001I-SID Translation TableInputOutputEFPI-SIDI-SID3001001100030120011000UpstreamDownstream

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End of Document