gpon-doctor tr-156 monitoring features

© 2009 TECNALIA - TELNET-RI

TR-156 Monitoring features


A complete, fast and reliable tool for GPON diagnosis.


OLT

ASP1

ODN BNG EthAgg

ONT/ONU

RG

User1

User2

NSP1/BNG

NSP2

NSP3

IP

L2TS

Access NetworksRegional Broadband Net

Customer Prem NetR/SS/R U TV

Regional Access Networks

Access Node

Ethernet

L2TP

IP-QoS

IP-QoS

Network architecture for Ethernet-based GPON aggregation


OLT ODNONT/ONU

RGFTTH: Fiber To The Home

R/SS/R U TV

CPN

OLT ODNONT/ONU

RGFITH: Fiber Into The Home

R/SS/RU

TV

CPN

Combined element

OLT ODNONT/ONU

BizRG

FTTO: Fiber To The Office

(one or more FE/GE interfaces for a single business customer)

R/SS/R UV

Deployment Scenarios (I)


OLT ODN ONT/ONU

RG

Multi-Dwelling Unit

R/SS/RU

VCPN

BizRG

Multi-Tenant Unit

RG CPN

RG CPN

U

U

Eth/xDSL

Eth/xDSL

Eth/xDSL

T

T

T

OLT ODN ONT/ONU

R/SS/RU

V

U

U

Eth/xDSL

Eth/xDSL

Eth/xDSL

BizRG

BizRG

Deployment Scenarios (II)


GEM Port

ONU

T-CONTs

Identification of Port ID

Traffic Shapping

Traffic flows identifiedBy Port ID

Priority control and transmission control by allocation reception on T-CONT(Alloc-ID)

Classifier PON TC

U

Traffic control facilities in ONU (upstream)


GEM Port

ONU

PON

Traffic class queues

Assign to queues according to GEM Port

DEMUX PON TC

U1

U-nsame as above

Scheduler

U

Traffic control facilities in ONU (downstream)


ONUOLT

R/SV U

MACTableS-VID101

S-VID101 TC1

S-VID101 TC1

S-VID101 TC2

S-VID101 TC3

GEM ID 11

GEM ID 12

GEM ID 13

GEM ID 21

TC = Traffic Class

• Traffic is single-tagged with an S-Tag throughout the aggregation network• The S-tag may be common to more than one user port. • The ONU always add an S-VID or translate am incoming S-VID for upstream traffic.• In downstream the OLT will use MAC- address and priority bits to determine the proper

downstream GEM port

Residential N:1 VLAN


OLT ONT

S-VLAN 101Pbit=1

S-VLAN 101Pbit=3

S-VLAN 101Pbit=0

S-VLAN 101Pbit=7

T-CONTX

T-CONTY

T-CONTZ

T-CONTT

GEM Port x1

GEM Port x2

GEM Port x3

GEM Port x4

EthernetUNI

C-VLAN 712Pbit=0

C-VLAN 612Pbit=4

C-VLAN 856Pbit=5

C-VLAN 911Pbit=6

ODN

• Translation of the VID value: C-VID is translated to S-VID in upstream and from S-VID to C-VID in downstream.

• Translation of the p-bit value: C_p-bit must be translated into S_p-bit in the upstream direction and S_p-bit into C_p-bit in the downstream direction.

Residential N:1 VLAN (Example)


ONUOLT

R/SV U

S-VID101S-VID101 TC1

C-VID100 TC1

S-VID101 TC2S-VID101 TC3

GEM ID 21

GEM ID 22

GEM ID 23

GEM ID 31

TC = Traffic Class

S-VID100 GEM ID 11 S-VID100 TC1

C-VID101/S-VID102

C-VID101 TC1C-VID101 TC2C-VID101 TC3

GEM ID 41

GEM ID 42

GEM ID 43

C-VID100/S-VID102

1:1 subscriber 1(1 TC)




• The ONU maps 1:1 VLAN into a unique U interface.• For single tagged VLANs at V, the ONU add or translate a S-VID.• For double tagged VLANS at V, the ONU is provisioned to assign a C-VID or

translate an incoming tag into C-VID, and the OLT adds the S-VID.

Residential 1:1 VLAN


OLT

ONT1

S-VLAN 102C-VLAN 12Pbit=0

S-VLAN 102C-VLAN 13Pbit=0S-VLAN 102C-VLAN 15Pbit=0S-VLAN 102C-VLAN 14Pbit=0

T-CONTX

T-CONTY

T-CONTZ

T-CONTT

GEM Port x1

GEM Port x2

GEM Port x3

GEM Port y1

EthernetUNI 1

C-VLAN 12Pbit=0

C-VLAN 13Pbit=0

C-VLAN 15Pbit=0

C-VLAN 14Pbit=0

ODN

EthernetUNI 2

EthernetUNI 3

EthernetUNI 1

ONTN

• 2 VLAN levels at the aggregation network side and one VLAN level in the Access network side.

• Unique S-VID per PON port, one C-VID per GEM port, one p-bit value per GEM port and one GEM port per T-CONT

Residential 1:1 VLAN (Example)


ONUOLTR/SV U

C-VID x /S-VID102

C-VID x S-VID102 TC1

S-VID103 TC1

GEM ID 11

GEM ID 12

GEM ID 13

GEM ID 11

C-VID 102/ S-VID101

GEM ID 11 C-VID102 TC1

C-VID x/S-VID104

GEM ID 21

GEM ID 22

GEM ID 23

S-VID103

TLS subscriber 1(3 VLANs & 3

TCs)

TLS subscriber 2Port 1

TLS subscriber 3(double tagged & 3

TC)

Q-VID100

Q-VID xC-VID x S-VID102 TC2


Q-VID101MACTable S-VID103 TC1GEM ID 21 Q-VID101

Q-VID x




GEM ID 31

GEM ID 32

GEM ID 33

TLS subscriber 2Port 2Q-VID x




MACTable

C-VID x /S-VID105

C-VID x S-VID105 TC1GEM ID 41

GEM ID 42

GEM ID 43

C-VID x/S-VID105



VLANs for Business Ethernet Services (VBES)


• In a VLAN for Business Ethernet Services architecture, the traffic at the U interface can be untagged, tagged, double-tagged and priority tagged.

• For Transparent LAN Service (TLS) the ONU has to add always an S-tag or translate an incoming S-tag into a new S-tag for upstream traffic.

• Assignment of unique S-VLANs tags by the ONU for TLS:– For single-tagged, priority-tagged or untagged, the ONU will add an S-tag in upstream

traffic. For downstream the S-tag is removed at the ONU. Optional, non-TLS traffic can be identify by Q-tags.

– For double-tagged, the ONU will accept only valid S-tags (that could be translated), the others will be silently discarded. For downstream, the S-tag may be translated back before being forwarded to the U interface.

• In the VBES picture:– Subscriber 1: Uses Q-VID (100) for Internet access (non-TLS) in the 1:1 model; uses Q-VID

(101) for Internet or ASP (non-TLS) in the N:1 model, Q-VID (x) is used for TLS traffic and S-VID (102) is added.

– Subscriber 2: Q-VID (101) as subscriber 1; Q-VID (x) for TLS, however it has 2 ports and the OLT will need to learn VLAN/MAC addresses.

– Subscriber 3: Double tagged port, frames with S-VID (105) are accepted.

VLANs for Business Ethernet Services (VBES)


PONI/F

UNIONT

T-CONTX

GEM Port EVC1

GEM Port EVC2

T-CONTY

GEM Port EVC1

GEM Port EVC2

T-CONTZ

GEM Port EVC1

GEM Port EVC2

T-CONTT

GEM Port Mgt VLAN

S-VLAN X + Dot1 p5

S-VLAN X + Dot1 p4

S-VLAN X + Dot1 p1

S-VLAN Y + Dot1 p5

S-VLAN Y + Dot1 p4

S-VLAN Y + Dot1 p1

S-VLAN X + Dot1 p7

S-VLAN X + Dot1 p5

S-VLAN X + Dot1 p4

S-VLAN X + Dot1 p1

S-VLAN Y + Dot1 p5

S-VLAN Y + Dot1 p4

S-VLAN Y + Dot1 p1

S-VLAN X + Dot1 p7

T-CONTX

T-CONTY

T-CONTZ

T-CONTT GEM Port Mgt VLAN

GEM Port EVC2

GEM Port EVC1

GEM Port EVC2

GEM Port EVC1

GEM Port EVC2

GEM Port EVC1

OLT

PONI/F

VBES (Example)


GPON Doctor 8000TR-156 Monitoring features

• VLAN Tagging check • VLAN filtering• Traffic prioritizing • TCONT-GEM port-Ethernet flow relationship• Efficient use of bandwidth resources• Multicast channel supervision as well as its associated

control flows


• GPON Doctor 8000 generates the TCONT+GEMport+VID+TC+PPTP association map based on the OMCI messages exchanged between the OLT and the ONUs.

• GPON Doctor 8000 extracts the user traffic (already decrypted) belonging to an specific TCONT+GEM port to a protocol analyzer where it is verified its compliance with the VID+TC shown in the association map.

How GPON Doctor validates TR-156?


• GPON Doctor 8000 identifies the BWMaps and generates a real time bandwidth allocation map per ONU.

• The information provided by the GPON Doctor allows to verify if the OLT is assigning bandwidth efficiently and according to the agreements with the Service providers.

How GPON Doctor check resource usage?


OLTONT

S-VLAN 700Pbit=6

T-CONTY

T-CONTZ

GEM Port x1

GEM Port x2

GEM Port 4095

EthernetUNI

C-VLAN 840Pbit=5

ODN

• Multicast traffic, consisting of a set of multicast groups and downstream IGMP messages, is forwarded using one or more N:1 VLANs.

• The multicast-VLAN traffic required by all ONUs is transported within a Multicast GEM port.• The Multicast GEM port is unidirectional (downstream) and GPON AES encryption is disabled.• As Multicast GEM port is unidirectional, upstream control flows use existing bidirectional data

GEM port with appropriate TC.

• GPON Doctor 8000 functionality of TCONT+GEM port traffic extraction allows to monitor the Multicast GEM port simultaneously with its related control flows.

• Multicast traffic can be extracted, downstream/upstream IGMP messages could be analyzed and, with the appropriate player, multicast content can even be viewed.

GPON Doctor and Multicast traffic


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gpon-doctor tr-156 monitoring features

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