Multi Domain Traffic Engineered
Transport Networks (E-OTN, PTN)
supporting P2P, P2MP, RMP and MP2MP
Ethernet Services
An overview of architecture and
functionality in terms of 802.1Q modelling
Maarten Vissers
2010-11-08
Introduction
E-OTN and PTN are multi domain, traffic
engineered transport networks which support
P2P, P2MP, RMP and MP2MP Ethernet services
OTN network contains multiple OTN carrier
networks
OTN carrier networks contain OTN access, metro
and core domains
OTN network contains OTN network termination
(NT), electrical switching and optical switching
(SW) equipment
OTN equipment at edge of domains is extended
with Ethernet Switch functionality
2
EOTN example
OTN Access
Ethernet
Switch
OE
OE
N-degree ROADM
OCH XC/ADM
N-degree ROADM
NT
OEO
OEO
OEO
ODU XC
OE
OE
ODU XC
OEO
OEO
OEO
OE
OE
NT
OE
OE
OE
OE
NT
OE
OE
OCH XC/ADM
N-degree ROADM
OTN Core
OE
OE
OE
OE
OCH
XC/ADM
OCH
XC
Ethernet
Switch
OE
OE
ODU
ODU
ODU
OEO
OEO
OEO
OEO
OEO
OEO
OE
OE
OEO
OEO
OEO
OE
OE
NT
OTN Metro
ODU XC
OE
OE
OE
OE
OE
OE
OE
OE
ODU
ODU
ODU
NT
OEO
OEO
OEO
OCH XC
N-degree ROADM
N-degree ROADM
OE
OE
OCH XC/ADM
N-degree ROADM
OE
OE
OCH
XC/ADM
OCH
XC
N-degree ROADM
OEO
OEO
OEO
MAC
MAC
Relay
Relay
functions
functions
are
interconnected via OTN
ODU
ODU
connections
connections
or Sor I-Tagged LANs
N-degree ROADM
OCH XC/ADM
N-degree ROADM
OTN Network
Termination
OCH XC
N-degree ROADM
OCH XC
OCH XC/ADM
NT
OEO
OEO
OEO
N-degree ROADM
OE
OE
OE
OE
ODU XC
OEO
OEO
OEO
OCH XC
N-degree ROADM
OE
OE
OE
OE
ODU XC
OEO
OEO
OEO
OE
OE
Ethernet
Switch
ODU
ODU
ODU
OEO
OEO
OEO
OE
OE
OEO
OEO
OEO
OE
OE
ODU XC
OE
OE
OE
OE
OTN Metro
OEO
OEO
OEO
OE
OE
ODU
ODU
ODU
NT
OE
OE
OE
OE
Ethernet
Switch
OE
OE
NT
OCH XC
N-degree ROADM
OCH XC/ADM
NT
NT
MAC
MAC
Relay
Relay
functions
functions
are
interconnected via OTN
ODU connections
NT
Ethernet
Network
Termination
NT
Hybrid Ethernet &
OTN Network
Termination
SW
OTN/EOTN
Switch
3
EOTN and PBN
EOTN adds one transport VLAN layer on top of its
OTN layer stack
EOTN can be viewed in this respect as a transport
PBN in which the 802.3 physical ports are
replaced by G.709/G.7041 physical ports and
TPMR type reserved address transparency
EOTN deploys the 802.1Q features complemented
by specific transport network features defined in
Y.1731, G.8021, G.8031, G.8051 and G.8052
4
802.1Q Provider (Edge) Bridges
(starting point)
Provider
Network
Ports
Provider Bridge
S-VLAN
Component
88-a8
Table 8-2
Provider Bridge
S-VLAN
Component
88-a8
Table 8-2
Provider Network
Ports
S-VLAN Component with 88-a8 and Table 8-2
Provider Edge Bridge
Customer Edge Ports
Customer
System
C-VLAN
C-VLAN
C-VLAN
Component
Component
Component
81-00
81-00
81-00
Table
8-1
Table
8-1
Table
8-1
C-tagged service interfaces
(CTSI)
Provider Edge Port
S-tagged service interface
(STSI)
Customer Network Port
C-tagged service interfaces
C-VLAN
C-VLAN
C-VLAN
Component
Component
Component
81-00
81-00
81-00
Table
8-1
Table 8-1
Table 8-1
Provider Access Ports
S-VLAN
S-VLAN
S-VLAN
Component
Component
Component
88-a8
88-a8
88-a8
Table 8-2
Table 8-2
Table 8-2
Customer’s
Provider Bridge
S-VLAN
PNP Component
88-a8
Table 8-2
Port-based service interface
(PBSI)
Access Network’s
Provider Bridge
S-VLAN
Component
88-a8
Table 8-2
Port-based service interface
Remote customer service interfaces
(RCSI)
Provider Network Ports
S-VLAN Components operating on
TPID 88-a8 with S-VLAN Reserved
Address transparency (Table 8-2), IVL
and SVL (multi-vid E-Tree), VID
translation, xSTP/xVRP
5
802.1Q port types
Many of the 802.1Q port types are
variations of a common port which
supports
a single VLAN multiplexing instance (clause
6.9) with configurable:
Tag type (TPIDs: 81-00, 88-a8),
Acceptable Frames Type
untagged set member
Up MEPs, Up MIPs
Down MIPs, Down MEPs
Down MEP below clause 8.5
6
802.1Q port types
Specific Configurations of Common Port
CEP
PEP
CNP
port
based
CNP
tag’d
PNP
RCAP
PAP
Common
Port
Tag type
C
C
S
S
S
S
S
C/S
Admit Only VLAN-tagged frames
Y
Y
N
Y
Y
Y
N
Y/N
Admit Only Untagged and Prioritytagged frames
Y
N
Y
N
N
N
Y
Y/N
Admit All frames
Y
Y
N
?
N
?
N
Y/N
PVID
Y
Y
Y
Y
Y
Y/N
N
Y/N
Enable Ingress Filtering
N
Member of untagged set
O
O
Y
Up MEP
N
N
Y
Up MIP
Y
N
Down MIP
Y
Down MEP
Down MEP below c8.5
Y
N
-
Y
Y/N
Y
N
N
N
Y/N
N|Y
Y
Y
N
N
Y/N
N
N|Y
Y
Y
N
N
Y/N
N
N
N
N
N
N
N
Y/N
Y
N
N|Y
Y
Y
Y
N
Y/N
7
EOTN (Edge) Bridges
(based on provider (edge) bridges)
Customer
System
EOTN Edge Bridge
OTN
Network
Ports
V
L
A
N
EOTN Bridge
ONP
ONP
VLAN
Component
ONP
ONP
ONP
EOTN Bridge
ONP
ONP
ONP
VLAN
Component
ONP
ONP
C
o
m
p
o
n
e
n
t
CNP
CNP
C-VLAN
C-VLAN
C-VLAN
Component
Component
PEP Component
81-00
81-00
81-00
Table
8-1 CEP
Table
8-1
PEP Table 8-1
CTSI
Customer’s
Provider Bridge
Transparent Service
S-VLAN
Interface
PNP Component
88-a8
Port Based Service
Table 8-2
Interface
CNP
CNP
CNP
CNP
CNP
C-VLAN
C-VLAN
C-VLAN
Component
Component
PEP Component
81-00
81-00
81-00 8-1 CEP
Table
Table
8-1
PEP Table 8-1
Individual S-VLAN Service
Interface
PAP
PAP
S-VLAN
S-VLAN
Component
S-VLAN
Component
88-a8
Component
88-a8
Table 8-2RCAP
88-a8
Table 8-2
Table 8-2
Customer’s
Provider Bridge
S-VLAN
PNP Component
88-a8
Table 8-2
PNP
EOTN’s VLAN Component deploys:
• ONP instead of PNP ports, and
• transport Ethernet specific features
8
OTN Network Port functionality
OTN Network Ports combine 802.1Q’s Provider Network
Port functionality with an OTN physical layer
Ethernet MEP and MIP functions
Includes support for Y.1731 Ethernet OAM, G.8021 OAM
processing and G.8031 APS OAM
Ethernet to OTN (de)mapping/(de)muxing functions:
Support of the EISS  Tag insertion/extraction
Support of the ISS by additional technologies  GFP-F/OTN
Frame filtering (8.6.3)
EISS
Up MPs (6.17, 19.2, 19.3)
EISS
Port filtering entities (8.6.1/2/4/5)
EISS
PNP
equivalent
Down MPs (6.17, 19.2, 19.3)
EISS
Linktrace Output Multiplexer (19.5)
EISS
Queuing entities (8.6.6/7/8)
EISS
OTN
specific
Support of the EISS
ISS
Support of the ISS by additional
technologies (6.15)
OTN ODU Down MP
OTN other functions
EISS
O
T
N
N
E
T
W
O
R
K
P
O
R
T
s
Up MPs (6.17, 19.2, 19.3)
EISS
Port filtering entities (8.6.1/2/4/5)
EISS
Down MPs (6.17, 19.2, 19.3)
EISS
Supports
G.8031 SNC
Protection
Supports
Y.1731 OAM
Linktrace Output Multiplexer (19.5)
EISS
Queuing entities (8.6.6/7/8)
EISS
Support of the EISS
ISS
Support of the ISS by additional
technologies (6.15)
Tagging
GFP-F
OTN ODU Down MP
OTN other functions
9
ODUk with GFP-F encapsulated
Ethernet frames with VLAN Tag
16
3808
O
D
U
k
GFP IDLEs
PTI
PFI
PLI
EXI
cHEC
tHEC
UPI
DA
DA
TPID
TYPE
SA
SA
PCP
DEI
ODUk
bit rates
1.25G
2.5G
3.75G
5G
6.25G
7.5G
8.75G
10G
11.25G
:
:
100G
4
MAC SDU
MAC FCS
VID
GFP Core Header
GFP Payload Header
PTI=000:
Client Data
PFI=0:
no Payload FCS
EXI=000:
Null Extension Header
UPI=0000 0001: Frame Mapped Ethernet
VLAN Tag
EOTN service set
11
EOTN Requirements
http://www.ieee802.org/1/files/public/docs2010/liaison-itut-sg15-oLS-197-0710.docx
Transport all MEF (G.8011.x) services over
OTN
Transport all 802.1 service interfaces over
OTN
Support the management of all above
services simultaneously using a single
forwarding function
Transport by using a unique edge-to-edge
layer that is separated from the customer
12
EOTN Edge Bridge –
Extended service set
EOTN is required to support any type of
Tagged service, including bundled STagged and I-Tagged services, over a
single Ethernet (ETH) layer
EOTN Edge Bridge can support those
services by deploying additional CNPs and
CBPs and connecting those to customer
PIPs and CBPs as illustrated in the next
slide
13
EOTN Edge Bridge –
Extended service set
Customer
System
EOTN Edge Bridge
CNP
CNP
C-VLAN
C-VLAN
C-VLAN
Component
Component
PEP Component
81-00
81-00
81-00
Table
8-1 CEP
Table
8-1
PEP Table 8-1
CTSI
Customer’s
Provider Bridge
EOTN Bridge
VLAN
ONP
ONP
Component
ONP
ONP
ONP
V
L
A
N
CNP
CNP
CNP
CNP
EOTN Bridge
ONP
ONP
ONP
VLAN
Component
ONP
ONP
Reuse of existing CNP and
CBP ports on the EEB
supports BSI individual
and/or bundled services,
transparent services and SVID/S-PCP/S-DEI
preserving (bundled) STagged services
C
o
m
p
o
n
e
n
t
Transparent Service
S-VLAN
Interface
PNP Component
88-a8
Port Based Service
Table 8-2
Interface
CNP
C-VLAN
C-VLAN
C-VLAN
Component
Component
PEP Component
81-00
81-00
81-00 8-1 CEP
Table
Table
8-1
PEP Table 8-1
Individual S-VLAN Service
Interface
bundled S-VLAN service
interface
CNP
PAP
S-VLAN
S-VLAN
Component
Component
88-a8
S-VLAN
88-a8
Table 8-2RCAP
Component
Table 8-2
88-a8
PAP Table 8-2
PNP
Customer’s
Provider Bridge
S-VLAN
PNP Component
88-a8
PNP Table 8-2
Customer’s
I-BEB/B-BEB/T-BEB
BSI transparent service interface
CNP
PIP
TComponent
CNP
BSI transparent service interface
CNP
PIP
ICNP
Component
PIP
CNP
CBP
BPNP
Component
CBP
PNP
BSI (bundled) service interface
CBP
BSI (bundled) service interface
CBP
BSI transparent service interface
CNP
14
EOTN (Edge) Bridges –
Transparency
Support of Transparent Services by the
EOTN’s Ethernet service (ETH VC) layer
requires TPMR type transparency (Table 83)
S-Tag does not provide such transparency
EOTN should deploy a new VLAN Tag
associated with:
TPMR type transparency
Transport network type operation,
management and control
15
Choice of Tag in EOTN (Edge) Bridge
Tag choice
16
New VLAN Tag
4-octets
TPID = xx-xx
3
1
PCP
DEI
New Transport VLAN Tag with 12-bit T-VID (ETH VC ID) &
TPMR Reserved Address transparency (table 8-3/802.1Q)
12
T-VID (ETH VC ID)
I-Tag with 24-bit I-SID; UCA-bit deals with T-VLAN (ETH VC)
frames with or without network MAC addresses (N-DA, S-DA)
TPID = 88-E7
PCP
1 1 1
RES1
I-Tag
18-octets
3
DEI
UCA
16
2
RES2
24
I-SID (ETH VC ID)
DA
SA
Tag is terminated in the “Support of the EISS” functions in
ONP
vlan_identifier parameter represents in EM_UNITDATA the 12bit T-VLAN ID or 24-bit I-SID
Existing devices already support VLAN Tag with 12-bit ID;
EtherType is configurable per port
Devices do not support an I-SID based vlan_identifier
parameter
VLAN Tag with new “Transport VLAN” type TPID
value is best fit
16
EOTN port types
(based on provider (edge) bridge ports)
Specific Configurations of Common Port
CEP
PEP
CNP
port
based
CNP
tag’d
PNP
RCAP
PAP
Common
Port
ONP
Tag type
C
C
S/T
S
S
S
S
C/S/T
T
Admit Only VLAN-tagged frames
Y
Y
N
Y
Y
Y
N
Y/N
Y
Admit Only Untagged and Prioritytagged frames
Y
N
Y
N
N
N
Y
Y/N
N
Admit All frames
Y
Y
N
?
N
?
N
Y/N
N
PVID
Y
Y
Y
Y
Y
Y/N
N
Y/N
N
Same basic set of ports
N
Y
Member of untagged set
O Tag
O
Y
Additional
type
Up MEP
N
N
Y
Y
Additional
Port
type
N
-
Y
Y/N
N
N
N
N
Y/N
N|Y
Up MIP
Y
N
N|Y
Y
Y
N
N
Y/N
Y
Down MIP
Y
N
N|Y
Y
Y
N
N
Y/N
Y
Down MEP
N
N
N
N
N
N
N
Y/N
N|Y
Down MEP below c8.5
Y
N
N|Y
Y
Y
Y
N
Y/N
N
Enable Ingress Filtering
17
EOTN (Edge) Bridge
Customer
System
EOTN Edge Bridge
EOTN Bridge
CNP
ONP
EOTN Bridge
T-VLAN
ONP Component ONP
<T-Tag>
ONP Table 8-3 ONP
T-VLAN component is a
VLAN type Component
operating on TPID: <T-Tag>
with TPMR Reserved
Address transparency (Table
8-3), ONP instead of PNP
ports, IVL and SVL (multivid E-Tree/E-LAN),
independent ingress/egress
VID translation, disabled
xSTP/xVRP, Y.1731/G.8021
OAM and G.8031 Ethernet
VLAN SNC protection.
ONP
T-VLAN Component with <T-Tag> and Table 8-3
T-VLAN
ONP Component ONP
<T-Tag>
ONP Table 8-3 ONP
CNP
C-VLAN
C-VLAN
C-VLAN
Component
Component
PEP Component
81-00
81-00
81-00
Table
8-1 CEP
Table
8-1
PEP Table 8-1
CTSI
Customer’s
Provider Bridge
Transparent Service
S-VLAN
Interface
PNP Component
88-a8
Port Based Service
Table 8-2
Interface
CNP
CNP
CNP
C-VLAN
C-VLAN
C-VLAN
Component
Component
PEP Component
81-00
81-00
81-00 8-1 CEP
Table
Table
8-1
PEP Table 8-1
PAP
CNP
Individual S-VLAN Service
Interface
S-VLAN
S-VLAN
Component
Component
88-a8
S-VLAN
88-a8
Table 8-2RCAP
Component
Table 8-2
88-a8
PAP Table 8-2
CNP
bundled S-VLAN service
interface
PNP
CNP
Customer’s
Provider Bridge
S-VLAN
PNP Component
88-a8
PNP Table 8-2
Customer’s
I-BEB/B-BEB/T-BEB
BSI transparent service interface
CNP
PIP
TComponent
CNP
BSI transparent service interface
CNP
PIP
ICNP
Component
PIP
CNP
CBP
BPNP
Component
CBP
PNP
BSI (bundled) service interface
CBP
BSI (bundled) service interface
CBP
BSI transparent service interface
CNP
18
ODUk with GFP-F encapsulated
Ethernet frames with T-VLAN Tag
16
3808
O
D
U
k
GFP IDLEs
PTI
PFI
PLI
EXI
cHEC
tHEC
UPI
DA
DA
SA
TPID=<T-Tag>
TYPE
SA
PCP
DEI
ODUk
bit rates
1.25G
2.5G
3.75G
5G
6.25G
7.5G
8.75G
10G
11.25G
:
:
100G
4
MAC SDU
MAC FCS
T-VID
GFP Core Header
GFP Payload Header
PTI=000:
Client Data
PFI=0:
no Payload FCS
EXI=000:
Null Extension Header
UPI=0000 0001: Frame Mapped Ethernet
Transport-VLAN Tag
EOTN summary
20
EOTN Summary
EOTN requires a minimal extension of 802.1Q functions and
ports:
Additional OTN Network Port with a Support of the EISS
function which operates on a new T-Tag associated with TPMR
Reserved Address transparency
Existing CNPs and CBPs with a Support of the EISS function
which operates on a new T-Tag associated with TPMR
Reserved Address transparency
21
PTN
22
Q.9/15 liaison on G.ptneq: “Next Step”
http://www.ieee802.org/1/files/public/docs2010/new-itu-1-G-ptneq-IEEE-Final-0510-v1.ppt
PTN VC/VP/VS layers may be supported
by the Ethernet technology including ETH
OAM(Y.1731,G.8021), ETH protection
switching(G.8031,G.8032), ETH
connection management (G.8051,
G.8052).
The use of Ethernet technology in PTN
requires an extension of the tagging
option defined in 802.1Q to support VC,
VP, VS stacking in single and multidomain scenarios.
ITU-T Q9/15 would like to progress this
work in cooperation with IEEE 802.1
23
Ethernet PTN
Ethernet PTN network contains a PBN like transport
VLAN (ETH VC) layer (same as EOTN)
Those transport VLANs
may be transported in P2P
server VLANs (ETH VPs)
Virtual Channel Layer
Virtual Path Layer (optional)
Virtual Section Layer (optional)
GFP
Circuit Switching Technology
(OTN, SDH, PDH)
Physical Media
PTN layer networks
Channel
Path
This requires PTN Network
Ports (PTNP) which
support 2-stage VLAN
multiplexing and optional
priority-tagging
Transmission Media
instead of in P2P ODUs in EOTN,
or P2P LSPs in MPLS-TP/VPLS
Customer/Client service Layer
Physical Media
(802.3)
(OTM-n, STM-n, DSn/En,
xDSL)
24
PTN Network Port (PTNP)
Frame filtering (8.6.3)
EISS
EISS
Up MPs (6.17, 19.2, 19.3)
EISS
Port filtering entities (8.6.1/2/4/5)
EISS
EISS
ISS
Down MPs (6.17, 19.2, 19.3)
P
T
N
P
EISS
Linktrace Output Multiplexer (19.5)
ISS
EISS
Support of the EISS (6.9)
NxISS
VC Tag
EISS
Down MPs (6.17, 19.2, 19.3)
EISS
Linktrace Output Multiplexer (19.5)
EISS
Support of the EISS (6.9)
ISS
ISS
ISS
ISS
Down MPs (6.17,19.2)
ISS
ISS
Linktrace Output Multiplexer (19.5)
ISS
ISS
Priority Tag (6.13)
ISS
ISS
VP Tag
VS Tag
Support of the ISS (6.7)
MAC
PTN-Tagged LAN
25
Hierarchy
Multi-stage connection hierarchy is a normal
means deployed in the latest generation circuit
and packet transport networks to scale these
networks
OTN supports up to 4 ODU multiplexing stages (more to follow)
MPLS-TP supports an unrestricted number of LSP
multiplexing stages
An Ethernet based PTN should have the capability
to support such multi-stage connection hierarchy
VLAN Tags should therefore be stackable
VP and VS transport VLANs are P2P VLANs (without MAC
based forwarding) set up by transport network
management and control systems
26
Hierarchy for multiple domains
Domain 1
Domain 2
VP
VS
VC
VP
VS
V
S
Domain 3
V
S
VP
VS
In multi-domain case the layer
relationship is relative and the
names represent their role in
each domain; some examples:
Top
VC
VP
VS
VC
VP
VS
VC
VP
VS
VC
VP
VS
Middle
VP in Domain 1 is VC in Domain 2
VP in Domain 2 is VC in Domain 3
Bottom
VC
VP
VS
Default case, no additional
hierarchy
VC
VP
VS
VS in Domain 1 is VC in Domain 2
VS in Domain 2 is VC in Domain 3
Each domain operates on the
lower three layers and is
unaware of the higher layers
Page 27
Domain interconnect examples
VLAN Hierarchy Extension
DOMAIN A
DOMAIN B
Frame filtering (8.6.3)
EISS
ISS
EISS
Up MPs (6.17, 19.2, 19.3)
Up MPs (6.17, 19.2, 19.3)
EISS
Port filtering entities (8.6.1/2/4/5)
EISS
Port filtering entities (8.6.1/2/4/5)
EISS
Port filtering entities (8.6.1/2/4/5)
EISS
EISS
ISS
ISS
EISS
EISS
Down MPs (6.17, 19.2, 19.3)
EISS
Down MPs (6.17, 19.2, 19.3)
EISS
Linktrace Output Multiplexer (19.5)
EISS
Linktrace Output Multiplexer (19.5)
EISS
Linktrace Output Multiplexer (19.5)
EISS
Support of the EISS (6.9)
EISS
Support of the EISS (6.9)
EISS
Support of the EISS (6.9)
NxISS
EISS
ISS
NxISS
ISS
Down MPs (6.17, 19.2, 19.3)
EISS
EISS
Down MPs (6.17, 19.2, 19.3)
NxISS
EISS
Down MPs (6.17, 19.2, 19.3)
EISS
ISS
EISS
Up MPs (6.17, 19.2, 19.3)
EISS
EISS
Linktrace Output Multiplexer (19.5)
Linktrace Output Multiplexer (19.5)
Linktrace Output Multiplexer (19.5)
EISS
Support of the EISS (6.9)
EISS
Support of the EISS (6.9)
EISS
Support of the EISS (6.9)
ISS
Down MPs (6.17,19.2)
ISS
ISS
Down MPs (6.17,19.2)
ISS
ISS
ISS
ISS
ISS
Down MPs (6.17,19.2)
ISS
Linktrace Output Multiplexer (19.5)
ISS
ISS
ISS
ISS
ISS
ISS
ISS
ISS
Priority Tag (6.13)
ISS
ISS
ISS
Linktrace Output Multiplexer (19.5)
ISS
ISS
Priority Tag (6.13)
ISS
Down MPs (6.17, 19.2, 19.3)
ISS
Linktrace Output Multiplexer (19.5)
ISS
ISS
Priority Tag (6.13)
ISS
ISS
Support of the ISS (6.7)
Support of the ISS (6.7)
Support of the ISS (6.7)
MAC
MAC
MAC
ISS
ISS
VCAVPAVSAVPA=VCBVPBVSB
VCAVPAVSA=VCBVPBVSB
28
E-PTN (Edge) Bridges
(based on eotn (edge) bridges)
PTN
Network
Ports
PTNP
E-PTN Bridge
T-VLAN
PTNP Component PTNP
<T-Tag>
PTNP Table 8-3 PTNP
ONPs are replaced
by PTNPs
PTNP
T-VLAN Component with <T-Tag> and Table 8-3
E-PTN Bridge
T-VLAN
PTNP Component PTNP
<T-Tag>
PTNP Table 8-3 PTNP
Customer
System
E-PTN Edge Bridge
CNP
PEP
CNP
PEP
CNP
MPEP
C-VLAN
C-VLAN
Component
Component
C-VLAN
81-00
81-00
Component
Table8-1
8-1 CEP
Table
81-00
Table 8-1
CTSI
Customer’s
Provider Bridge
Transparent Service
S-VLAN
Interface
PNP Component
88-a8
Port Based Service
Table 8-2
Interface
CNP
CNP
CNP
CNP
CNP
C-VLAN
C-VLAN
C-VLAN
Component
Component
PEP Component
81-00
81-00
81-00 8-1 CEP
Table
Table
8-1
PEP Table 8-1
Individual S-VLAN Service
Interface
S-VLAN bundled service
interface
PAP
S-VLAN
S-VLAN
Component
Component
88-a8
88-a8
S-VLAN
Table 8-2RCAP
Table 8-2
Component
88-a8
PAP
Table 8-2
CNP
PNP
CNP
MPNP
BSI transparent service interface
CNP
Customer’s
Provider Bridge
S-VLAN
PNP Component
88-a8
PNP Table 8-2
Customer’s
I-BEB/B-BEB/T-BEB
TPIP Component CNP
BSI transparent service interface
CNP
PIP
ICNP
Component
PIP
CNP
CBP
BPNP
Component
CBP
PNP
BSI (bundled) service interface
CBP
BSI (bundled) service interface
CBP
BSI transparent service interface
CNP
29
PTN Summary
An Ethernet based PTN requires the development
of a PTN Network Port (PTNP), which supports 2stage VLAN multiplexing and transport specific
Ethernet features
A stackable VLAN Tag is required to support the
single and multi-domain ETH VC/VP/VS (VLAN)
hierarchy
30
Annex
31
Transport network specific
Ethernet features
Alarm suppression
Additional Y.1731, G.8021,
G.8031, G.8032 Ethernet
OAM frames
G.8031 VLAN linear
protection (ETH SNC
protection)
G.8032 VLAN ring
protection
VLAN IDs have a link local
scope and VID Translation
is used to map the local
VID on each link onto the
Relay VID inside a node
Number of FIDs is
equipment specific and not
limited to 4094 (as
specified in 8.8.8/802.1Q);
e.g. could also be 16k,
32k, 64k, 128k,...
VLAN connection
management with network
management or GMPLS
control plane
without spanning tree
protocol (MSTP) and
without VLAN registration
protocol (MVRP)
32