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TM-Series Technical Description Double DGbE xWDM, Basic Unit (TPDDGBE R1) Rev N, 2009-11-30 Technical Description Quad MultiRate Transponder (TPQMR R1, R2) Rev S, 2009-02-10

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Page 1: TM-Series - kt.agh.edu.plkt.agh.edu.pl/~lason/01_TD/21_TD-DDGBE_N.pdf · The TPDDGBE can be used in CWDM or DWDM networking by using CWDM or DWDM SFP transceivers towards any of the

TM-Series Technical Description Double DGbE xWDM, Basic Unit (TPDDGBE R1) Rev N, 2009-11-30

Technical Description Quad MultiRate Transponder (TPQMR R1, R2) Rev S, 2009-02-10

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Table of Content

1 General...............................................................................................................3 1.1 In commercial confidence ...............................................................................................3 1.2 Document Revision History.............................................................................................3 2 Functional Description........................................................................................4 2.1 General ...........................................................................................................................4 2.2 TPDDGBE.......................................................................................................................5 3 Applications ........................................................................................................7 3.1 CWDM networking ..........................................................................................................7 3.2 DWDM networking ..........................................................................................................8 4 Functionality .......................................................................................................9 4.1 Line protection ................................................................................................................9 4.2 Loop-back .....................................................................................................................10 4.3 Optical Interfaces ..........................................................................................................10 4.4 GbE broadcast ..............................................................................................................11 4.5 Client configuration. ......................................................................................................12 4.6 Synchronization ............................................................................................................12 4.7 Signal format on xWDM layer .......................................................................................12 4.8 Performance monitoring................................................................................................12 4.9 GbE channel utilization .................................................................................................13 4.10 Management channel ...................................................................................................13 4.11 Monitor points ...............................................................................................................13 4.12 Alarms...........................................................................................................................13 4.13 Product data..................................................................................................................14 4.14 Remote inventory..........................................................................................................14 4.15 Consequent actions ......................................................................................................15 4.16 Trail Trace.....................................................................................................................16 5 Networking considerations ...............................................................................17 5.1 Protected links ..............................................................................................................17 5.2 Using TPQMR as regenerator transponder...................................................................19 6 Setting up TPDDGBE via ENM GUI.................................................................20 6.1 ENM Frame Overview...................................................................................................21 6.2 Verbose mode...............................................................................................................22 6.3 Equipment Frame .........................................................................................................23 6.4 NE configurations..........................................................................................................24 6.5 TPDDGBE in Transponder mode (“tpDDGbE”).............................................................25 6.5.1 Equipment view, unit and interface settings ..................................................................25 6.5.2 “Inventory” tab...............................................................................................................26 6.5.3 “Line” tab.......................................................................................................................27 6.5.4 “Line PM” tab ................................................................................................................28 6.5.5 “PPP” tab ......................................................................................................................29 6.5.6 “Client” tab ....................................................................................................................30 6.5.7 “Protection” tab .............................................................................................................31 6.6 TPDDGBE in Regenerator mode (”tpDDbER”) .............................................................32 6.6.1 “Inventory” tab...............................................................................................................33 6.6.2 “Line” tab.......................................................................................................................34 7 Mechanical Layout ...........................................................................................35 7.1 Transponder configuration ............................................................................................36 7.2 Regenerator configuration.............................................................................................37 8 Technical data ..................................................................................................38

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1 GENERAL

The specifications and information within this manual are subject to change without further notice. All statements, information and recommendations are believed to be accurate but are presented without warranty of any kind. Users must take full responsibility for their application of any products.

In no event shall Transmode Systems AB be liable for any indirect, special, consequential or incidental damages, including, without limitation, lost profits or loss or damage to data arising from the use or inability to use this manual, even if Transmode or its suppliers have been advised of the possibility of such damages.

1.1 In commercial confidence

The manual is provided in commercial confidence and shall be treated as such.

1.2 Document Revision History

Revision Date Description of changes

A 2005-03-18 Creation B 2005-06-30

(A3.2 release) - Transition to new Transmode format. - Introduction of new overlay with clarified text information. - Addition of cascade Transponder functionality - Support for 100km CWDM SFP’s

C 2005-10-31 A4.0 content; DWDM SPF support D 2005-12-20 Updated with A4.1 content. Line protection. E 2006-04-20 Enhanced information in section 8 F 2006-06-20 TRX10006 has better RX sensitivity. See chapter 8 G 2006-08-20 - More detailed info on tables with optical data.

- Addition of ENM GUI information - Improved chapter on management channels

H 2007-04-27 Updated with release 8.0 content; - low band CWDM SFP’s - support for 100Base-T

I 2007-12-21 Update with rel 10.0 content; new DWDM SFP Removal of channel mapping on MDU’s.

J 2008-05-28 Change of logotype Change of structure and enhanced information.

K 2009-01-16 Corrected optical data on TRX100014/xx L 2009-02-10 Changed front page M 2009-06-15 Removal of technical data of transceivers in chapter 8. See

Dimensioning Guidelines in System Manual for details! New table added showing supported transceivers.

N 2009-11-30 Updated power consumption values in chapter 8

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2 FUNCTIONAL DESCRIPTION

2.1 General

WDM is an analogue technique and requires a controlled environment for error free transmission. Transponders and Muxponders serve as buffers between the “client layer” and the “WDM domain”. As a result, client equipment of different types (e.g. SDH, IP routers) and from different vendors can be connected to the Transmode network without any impact on the transmission path through the network.

A Transponder/Muxponder also enables encapsulation of the client signal into a digital wrapper, i.e. extra bytes are added to the client signal at the client ingress point and removed at the client egress point. These OH-bytes can be used for a number of features, such as

- Introduction of quality check of the WDM signal enabling Performance Management (PM) as well as Fault Management (FM) in the transmission domain.

- Insertion of management channels that are used to connect to other nodes in the network for management purposes. Also called “Embedded” or “In-band” management channels.

- Insertion of coding that detects and corrects bit errors; Forward Error Correction (FEC). This is typically needed for long-haul transport of 10Gb/s signals since it gives the signal similar transmission performance as a 2.5Gb/s signal in an amplified network.

- Insertion of path information that can be used to validate the connection.

- Security features like Automatic Laser Shut-down (ALS) that shuts down the laser upon a fiber cut.

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2.2 TPDDGBE

Figure 1: Double DGbE Transponder

The TPDDGBE is a unit having two individual Dual GbE Transponder functions on the same board. Each of the two Transponders electrically multiplexes two GbE-signals onto one wavelength channel having a line rate of 2,488Gb/s.

Performance Data is collected from client and line interfaces, embedded management channels provides easy remote management connectivity and loop-back functionalities can be used for faultfinding etc. PM-data is presented according to G.826 via the node or network manager

Pluggable Transceivers (SFP’s) are used on both client and line interfaces enabling configurations that exact match current and future needs.

The TPDDGBE can be used in multiple configurations;

1. As two separate Transponder functions, each aggregating 2x GbE-signals where the line signal can be singular or duplicated for line protection (tpDDGbE).

2. As four separate regenerator functions (tpDDGbER).

At start-up of the unit, it is loaded with one of two SW-images giving the above two functions. The MIB-name and GUI will change accordingly.

The TPDDGBE has an on-board microprocessor that contains the unit SW for managing the unit. In stand-alone configuration it will also contain the node manager SW, TM-ENM.

In regenerator mode all eight ports (client and line ports) are equipped with CWDM/DWDM SFP’s having the interface performance needed to bridge the links eastbound and westbound. As an example, it is possible to use CWDM SFP’s facing west and DWDM SFP’s facing east to make a CWDM to DWDM translation.

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The TPDDGBE uses an internal clock oscillator to generate the outgoing data signals. There is thus no jitter accumulation as for units using through-timing. Consequently a higher number of NE’s can be cascaded.

The selection between normal transponder mode and regenerator mode is done when the TPDDGBE is inserted into a chassis/subrack. The TPDDGBE must be taken out of service if this mode is to be changed.

In CU-less applications, e.g. in a TM-101/-102 chassis, a TPDDGBE will by default set into transponder mode.

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3 APPLICATIONS

3.1 CWDM networking

The TPDDGBE can be used in CWDM or DWDM networking by using CWDM or DWDM SFP transceivers towards any of the available CWDM/DWDM MDU’s and/or AD-filters.

A typical application for the TPDDGBE is broadband networks for collection of multiple GbE-signals in e.g. ADSL/DSLAM and Triple-Play networks.

Figure 2: Single-fiber CWDM networking example

The figure shows an example point-to-point CWDM network where the TPDDGBE is used at the end nodes as well as a regenerator function in an intermediate node.

Up to 8 channels can be established in the single-fiber configuration giving 16 GbE-channels per single-fiber. The example above shows a setup using 4 channels.

CWDM networking solutions on fiber-pair configurations is also supported. See “Dimensioning Guidelines” within the System Manual for more details on configuration alternatives and losses through the optical components.

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3.2 DWDM networking

The usage of pluggable transceivers (SFPs) enables the TPDDGBE to be used in either CWDM or DWDM applications.

The below example shows a configuration where the TPDDGBE is used in a CWDM collector network and relayed through an amplified DWDM link up to a head-end node where all GbE-signals are extracted.

Figure 3: Combined CWDM and DWDM networking example

See “Dimensioning Guidelines” for more information on amplified DWDM networks.

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4 FUNCTIONALITY

4.1 Line protection

The TPDDGBE can be set into a line protection mode by adding yet another line transceiver (SFP). This protection alternative will not introduce any losses in the optical domain since the switching is performed electrically within the unit.

Figure 4 shows a simplified network example that shows what parameters and criteria’s that are used as base for switching.

Figure 4: Line protection

Protection switch is generated upon “Loss Of Signal”, “Loss Of Frame” and “FarEndLineError”

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4.2 Loop-back

Each TPDDGBE function can be set in loop-back mode. The loop-back is of remote client loop-back type, i.e. the client signal is looped as shown in the figure. Loop-back is set per client signal independently. The client signal is transmitted to the Client Tx interface and looped back towards the line. The incoming GbE signal is not transported out from the unit.

The wrapper on the line side is not affected by this loop-back.

This loop-back function can be used to e.g. validate a connection from near-end to hand-over to a client system.

Figure 5: Loop-back

Note! Loop between two client ports using external patch cords is not supported when using electrical SFP’s (TRX1000025)

Client Line

4.3 Optical Interfaces

The following GbE transceivers are provided on the client side:

• MM/850nm SFP • SM/1310nm SFP • Electrical SFP for 1000BASE-T • Electrical SFP for 100BASE-T

On the WDM side, different variants of transceiver plug-in modules can be selected with different range characteristics, i.e.

• CWDM [email protected]/s • CWDM [email protected]/s • CWDM [email protected]/s • DWDM [email protected]/s • DWDM [email protected]/s

See chapter 8 for list of supported transceivers and “Dimensioning Guidelines” within the System Manual for details on optical data.

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4.4 GbE broadcast

The TPDDGBE can also be used in IP broadcast networks, i.e. where the GbE signals are transmitted uni-directional. This is achieved by activating the loop-back function on the client side. This loop-back acts as a “drop and continue” function giving the two received GbE-signals to be transmitted at the client ports as well as looping them back on the transmit direction of the line side.

The line protection feature enables protected broadcast configurations. The figure below shows a protected broadcast example on a single-fiber configuration. The second half of the TPDDGBE units is not used in the example, but could be used for bi-directional GbE traffic to collect IP-traffic from e.g. DSLAM networks. It is thus possible to combine a broadcast and GbE collection network in this configuration.

Figure 6: Protected broadcast configuration

Note that the embedded management channels will not operate in broadcast mode. Note that electrical SFP’s are not currently supported in broadcast mode. Note that the protection is revertive, i.e. switch-back to default direction is done when this is comes back into operation. This is required to avoid “isolated” islands. See I&C manual for more details.

In TNM the right path will always be shown with a line and the left path with a dotted line.

When using protection in broadcast mode it is important to understand that if performing a forced switch to left- or right the traffic might not pass to the other satellite nodes in the ring if not the same forced switch is done on the rest of the members in the broadcast ring.

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4.5 Client configuration.

Each Transponder function on the TPDDGBE is configured via the management system for either:

• GbE client 1 only, i.e. any signal on GbE client 2 is blocked • GbE client 2 only, i.e. any signal on GbE client 1 is blocked • 2x GbE, i.e. both client 1 and client 2 are opened

4.6 Synchronization

From client input to xWDM interface: An internal synch source generates the transmitted clock rate.

From xWDM to client interfaces: An internal synch source generates the transmitted clock rate.

All outgoing signals are thus re-timed using an internal sync source.

4.7 Signal format on xWDM layer

The WDM signal format is a Transmode proprietary signal. The line rate is 2,488Gb/s, i.e. equal to STM-16/OC-48 but not using the STM-16/OC-48 framing format.

4.8 Performance monitoring

Performance Monitoring (PM) is provided on the incoming and outgoing CWDM signals as well as incoming and outgoing client signals.

The PM data is retrieved every 15min/24h and presented according to the G.784/G.826 standard:

• ES – Errored Seconds • SES – Severe Errored Seconds. • BBE – Background Block Errors • UAS – Unavailable Second PM on client signals is imitating ITU-T G.826 standard based on CRC and 8B/10B coding errors. PM on line signals is imitating ITU-T G.826 standard based on CRC errors.

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4.9 GbE channel utilization

The utilization of each client port is monitored and the effective usage of the GbE capacity is presented in % of the max capacity.

This is retrieved every 15min/24h.

4.10 Management channel

An internal management channel is added to the traffic channel via special OH bytes. This channel is used by node manager TN-ENM and network manager Transmode TNM to reach and manage remote nodes within the network.

The TPDDGBE unit supports two management channels (DCC-channels). In Transponder mode both line ports carries DCC channels. If line protection is activated, the same DCC-channels are copied to both working and protect interfaces.

When the TPDDGBE is set into regenerator mode the regen transponder no 4 (R4 on front) carries the DCC channels (i.e. ports 13 - 14 and 15 - 16). This is a fixed setting so this transponder function shall be used first to ensure management access.

4.11 Monitor points

A number of analogue data can be retrieved from the unit:

• Board temperature: Given in Centigrade • Received optical power level • Laser Bias current • Optical output power • Laser temperature: only on DWDM SFP’s.

They are also used to generate indications based upon defined thresholds. Actual parameters will vary between different SFP types.

4.12 Alarms

Any generated alarms are collected by the Control Unit and accessible via the node manager TM-EMN or network manager Transmode TNM. The status LED (STS-LED) on the board front indicates the severity of the active alarms. See chapter 7.

See “Troubleshooting guide” in volume “Operation & Commissioning” of the System Manual for listing of alarms and procedures to resolve them.

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4.13 Product data

All boards/units within a TM-3000/-301/-101 Network Element have unit related information stored in non-volatile memory banks. This information is stored at production and is required for administration and startup of the boards.

The information is divided into three main groups:

• Environmental data - Contains data, which is read and used without knowledge of production data version

• Generic board data - Contains administrative data, which is included on all boards, both active and passive.

• Specific board data - Data needed for proper board operation.

Some alarms are based on the presence of this information:

• “Vital Product Data Missing”: Information in the board data memory bank that is vital to manage the unit is missing. This alarm is classified as “critical” and may require board replacement.

• “Non-vital Product Data Missing”: Information in the board data memory bank that is not vital to manage the unit is missing. This alarm is classified as “minor”.

See System Manual Volume C, Operation & Maintenance for further details.

4.14 Remote inventory

Specific inventory data can be retrieved locally or remotely. The information provided is:

• Unit name • Unit HW Product number • HW revision • Unit SW product number • SW revision • Firmware revision • Unit Manufacturer • Unit serial number

Data can also be retrieved from the SFP’s giving information about

• vendor name • serial number • wavelength • interface type MM, SM or TP (Twisted Pair for 1000Base-T) • distance type

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4.15 Consequent actions

Figure 7: Consequent actions per DGBE-function

Loss of input client signal:

• WDM side: the affected GbE signal will generate idle signaling. Since the management channel is carried on the WDM signal, the objective is to keep the WDM output signal alive regardless of status of the input signals on the client side.

• Near-end client output port will not be affected.

• On the far-end output port, the affected GbE signal will be shut down or be forced on (selectable).

In regenerator mode AIS signalling will be generated downstream upon an uplink failure. This AIS indication will render a protection switch and the downstream end node. All units receiving the AIS signal will generate an alarm.

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Loss of line signal:

• Output near-end client ports: Both are shut down or forced on (selectable). The latter will give idle data out.

• Output near-end line port: ALS scheme or forced on (selectable).

• Output far-end client ports: Dependent on consequent action on incoming WDM signal to far-end node. If WDM signal active, no change on client outputs. If WDM signal shut down, then outputs either shuts down or forced on (selectable)

4.16 Trail Trace

A Trail Trace functionality enables insertion of a value (16 bytes) in the outgoing line signal and setting the same value as the expected Trail Trace in the far end receiving WDM interface. This functionality can be used to ease the installation procedures by providing a quick validation of an optical wavelength channel setup.

Trail Trace is inserted in both line ports.

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5 NETWORKING CONSIDERATIONS

5.1 Protected links

The DCN solution must be planned carefully for protected networks since isolated islands may occur upon a link failure. These isolated islands can occur when intermediate regenerator sites are used in-between the end nodes.

For links without intermediate regeneration sites there is no risk for isolated islands. The management traffic can thus follow the traffic as it is switched. This configuration is set via “Wrapper mode” (see chapter 6.5.7 on page 31) and via the selection “Follow traffic”. This means that the management traffic channel will follow the traffic upon a protection switch.

For links with intermediate regeneration sites, the “Wrapper mode” is recommended to be set into “Fixed to default”. This means that the management traffic channel will continue to be transmitted on the default line ports (see chapter 7.1) regardless of protection switching.

Figure 8: Example network; protected with intermediate regenerator nodes

The above figure show an example CWDM network where one of the TPDDGBE functions is used. Management access is only done in node A. The figure shows that the “default” Tx-Rx line ports 13 – 14 are used for the upper path, and the other Tx-Rx ports 9 – 10 are used for the lower path. Also note that the ports 13 – 14 and 15 – 16 are used on the TPDDGBE units that are in regenerator mode. This is according to the statement in chapter 4.10.

The Wrapper mode is set to “Fixed to default” in Node A and Node C. This means that the management traffic will be fixed to ports 13-14 regardless of the protection switch setting. When the network is set into operation it is thus important to activate the upper path first so that this becomes the “active” path and the other is “stand-by”. This will ensure management connectivity to nodes A – B1 – C.

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Note! There is no wrapper connection established on the lower path. There is thus no management connection to node B2. The quality status of the lower (stand-by) path is however fully monitored in nodes A and C and any traffic affecting faults will generate a degraded service indication.

Management access to the nodes in the lower path can be achieved using local DCN access if available. Alternatively the second TPDDGBE function can be used. This second alternative is described below.

Figure 9: Example network; protected with intermediate regenerator nodes, step 2

The default Tx-Rx ports on the second TPDDGBE function are ports 15 & 16. These are connected to the lower path. As on the first TPDDGBE function, the wrapper mode is set to “Fixed to default” in Node A and Node C.

With this setup the first TPDDGBE function establishes a fixed management channel on the upper path (A – B1 – C) and the second TPDDGBE function over the lower path

(A – B1 – C). We now have full management access to all nodes in the network regardless of protection switching.

Note! There is no connection between default Tx-Rx ports and protection settings. These two are set independently. In the above network example it is recommended to use the same paths as “active” and “stand-by”. On the first TPDDGBE function the active path shall be set to ports 13 – 14 and on the second to ports 11 – 12.

If a fiber break occurs between node A and node B1 it is still possible to get management access to node B1 via A – B2 – C – B1. There are thus no isolated islands as would have been the case if both TPDDGBE functions have been setup in the exact same way.

It is thus equally important to plan the DCN network as the traffic connections in a network to get a secure and proper behaviour.

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5.2 Using TPQMR as regenerator transponder

In some cases a TPQMR might be used as a regenerator transponder.

If using TPDDGBEs with one or more TPQMRs between, see example above, the laser mode must be set to “on” on the TPDDGBE units. This is done in the following way: GUI Double-click on Actual Board Line tab Name List-box Laser

Mode CLI ::wdm::if wanted port set laserMode

Do not forget to perform the same settings in the other end as well.

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6 SETTING UP TPDDGBE VIA ENM GUI After login to the ENM using a web browser, the initial view is the Equipment view. The appearance will differ depending on what chassis that is used. The figure below shows the view that is presented when logging into a TM-3000.

Figure 10: ENM GUI

The window has several clickable objects as well as menu links. A certain configuration window or information object can be reached via menu links or via clickable objects. Some buttons will change color to reflect alarm status (e.g. fan and power buttons). This will be explained in more detail in the sections that follow.

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6.1 ENM Frame Overview

There are three main frames through which the node can be managed.

The “left frame” is a static frame that is always seen in the browser. Pressing on the equipment link will bring the user back to the starting point.

The “top frame” is dynamically updated and shows the number of alarms and the highest severity among them.

The biggest frame is the “equipment frame”. This frame is changed according to the choices made on all the three frames.

See the figure below to see a split view of these three frames.

Figure 11: ENM GUI Split View

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6.2 Verbose mode The browser can be set in two modes where different depth of information is presented. This setting is done via the “Browser settings” that is shown on the menu to the left.

For normal operation of a NE the browser shall be set in Verbose mode “off”. This will present the most relevant information and settings and provide a more compact display of the different windows.

Figure 12: Verbose Mode

The default setting is “Verbose mode” in “off” mode. To activate verbose mode, click in the tic-box and press “Apply”. Some configurations can only be done with the verbose mode activated. This will vary from unit to unit.

When needed configurations have been done it is recommended to reset the verbose mode to “off”.

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6.3 Equipment Frame

The equipment frame seen in the figure below points out interesting information and areas with information on what happens when clicking on them.

Figure 13: Equipment Frame

The “Chassis tab” indicates the chassis type. If several chassis are connected into a single NE entity, the included chassis’ will be found under separate tabs. A Control Unit (CU) is required to connect multiple chassis into one NE. It is thus not possible to combine multiple TM-101 chassis in this way since no CU is used in this configuration.

The “Save configuration status” icon changes color when there are unsaved changes in the configuration.

A warning window will be presented upon logout from the ENM if there are unsaved changes. It is then possible to save, leave unsaved or cancel the logout via this window.

All un-saved configurations will be lost if the node is re-booted. It is possible to log-in again and do the save command. All unsaved configurations and settings will however be lost upon a re-boot of the unit.

For each of the Traffic Units (TU’s) there is an area that can be clicked on to show the active alarms for that unit. To configure a TU there is an empty area that can be clicked on and a board wizard will pop up.

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6.4 NE configurations When a node is to be commissioned the first time a number of configuration steps must be taken on both NE and board level. To ease this process a Node and Board Wizard is provided. The wizards present a series of pages where configuration data is entered. Every page has a help text where all parameters are described.

The NE related configuration is done via the “Node Installation Wizard” and is activated via the menu item “Getting started” to the left. The following data is entered:

• DNS and Node Name • IP address • Default Gateway • Date and time (NTP) • SNMP Traps • Passwords • Radius and Tacacs+ settings • Backup upload settings • Backup/Restart settings

The entered values are saved and activated after completion of the wizard when the “finish” button is pressed. The above parameters can also be set “manually” via the corresponding configuration windows.

The board/unit related settings can be done via the “Board Wizard”. The “Board Wizard” will prompt for different parameters depending on the unit type.

For TM-3000 and TM-301 chassis the “Board Wizard” will include all installed units in the card cage.

Some pages have a series of buttons at the bottom.

“Refresh”: Updates all values on the page.

“Apply”: Performed changes are activated (note that the change is not saved)

“Multi Set”: Enables setting of multiple parameters that are related and relevant

“View Table”: All related and relevant data is listed in table format

“Help”: Opens an information window on parameters

For additional information on how to commission on node and network level, see the “Installation & Commissioning” sections within the System Manual.

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6.5 TPDDGBE in Transponder mode (“tpDDGbE”)

6.5.1 Equipment view, unit and interface settings When clicking on one of the interfaces on the TPDDGBE unit in the equipment view, the following window is presented. A number of tabs enable access to information and entering of data related to both unit/board and interfaces. The tabs will differ between different units. The above figure shows the tabs that are presented for the TPDDGBE. In the above example the first tab is named “tpDDGbE:1:4”. This means that this is a TPDDGBE Transponder placed in subrack no1 and in slot no 4. The nomenclature is “MIB name”:”subrack no”:”slot no”. This is used generally for all units. Interfaces are named in a similar way. “interface type”:”slot no”:”Tx port – Rx port” where “interface type” is either “wdm” for line interfaces or “client” for client interfaces.

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6.5.2 “Inventory” tab

The figure shows an example inventory screen dump from the ENM GUI.

Note that this unit also has a “Firmware revision”. This parameter is only relevant for units with FPGA’s (programmable arrays).

Inventory information on the optical transceivers is found under the tabs “Line” and “Client”.

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6.5.3 “Line” tab

Under the tabs “Line” and “Client” information in optical parameters can be found, alarm thresholds can be set and inventory data on the transceivers is shown etc. The TPDDGBE in Transponder mode can be configured for three “Distribution roles”: • “terminalMultiplexor” • “broadcastHub” • “broadcastSatellite” The “terminalMultiplexor” role is used for standard bi-directional links. The broadcast roles are used in uni-directional broadcast networks (see chapter 4.4). Press the “Help” button for more information on the configurable items.

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6.5.4 “Line PM” tab

Below is an example screen dump from the ENM GUI showing the PM data presented via the tab “Line PM”. A similar tab for the client signals (“Client PM”) provides PM data for each individual client interface. Thresholds can be set to activate alarms.

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6.5.5 “PPP” tab

The “PPP” tab is used to setup the management communication channel using the OH-bytes bytes within the line signal. See “Designing DCN Network Plans” and “Configuration Guide” within the Installation & Commissioning volume for more details on how to establish PPP-links.

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6.5.6 “Client” tab

The drop-down menu at “Name” is used to select which client signal to be viewed. The nomenclature used is:

client:”subrack no”:”slot position”:”Tx port number” – “Rx port number”

Each of the four client signals can be viewed and configured.

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6.5.7 “Protection” tab

The “protection” tab is used to activate the line protection functionality (see chapter 4.1 and chapter 7).

The DCN solution must be planned carefully for protected networks since isolated islands may occur upon a link failure. These isolated islands can occur when intermediate regenerator sites are used in-between the end nodes.

For links without intermediate regeneration sites there is no risk for isolated islands. The management traffic can thus follow the traffic as it is switched. This configuration is set via “Wrapper mode” and via the selection “Follow traffic”. This means that the management traffic channel will follow the traffic upon a protection switch.

For links with intermediate regeneration sites, the “Wrapper mode” is recommended to be set into “Fixed to default”. This means that the management traffic channel will continue to be transmitted on the default line ports (see chapter 7.1) regardless of protection switching. See 5.1 for more information on this subject.

Note that each end node must be configured identically.

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6.6 TPDDGBE in Regenerator mode (”tpDDbER”)

A different GUI is presented if the TPDDGBE is configured for regenerator mode. As an example, no “Client” tab exists since all interfaces are of “line” type.

The “Line PM” and “PPP” tabs are identical as for the Transponder mode and is not repeated below.

The below screen dump show an example of the “tpDDGbER” tab

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6.6.1 “Inventory” tab

The figure shows an example inventory screen dump from the ENM GUI.

Inventory information on the optical transceivers is found under the tab “Line”.

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6.6.2 “Line” tab

In the regenerator mode all interfaces are of “line” type. See chapter 7 on how the ports are used in this mode.

If having more than two TPDDGBE units in repeater mode between two terminating TPDDGBE units and if the wrapper is terminated in the repeaters (ports 13-14 and 15-16), it is recommended to set Laser mode to on “on” rather than the default “als” on the line ports of the repeaters. This is to avoid disturbances on the wrapper signal when you have fibre-breaks in surrounding links. Note that the laser class of the link can be of Class 1M if DWDM SFP’s are used.

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7 MECHANICAL LAYOUT

New (from A3.2) Transmode overlay and previous (up to A3.1) Lumentis version

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7.1 Transponder configuration

Port usage in line protection configuration. Note the position of the protection ports.

DGBE Transponder no 1:

Client 1: Tx-Rx Ports 1-2 Client 2: Tx-Rx Ports 3-4 Line 1(A): Tx-Rx Ports 13-14 (also referred as the “default” ports) Line 1(B) (prot): Tx-Rx Ports 9-10

DGBE Transponder no 2:

Client 1: Tx-Rx Ports 5-6 Client 2: Tx-Rx Ports 7-8 Line 2(A) Tx-Rx Ports 15-16 (also referred as the “default” ports) Line 2(B) (prot): Tx-Rx Ports 11-12

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7.2 Regenerator configuration

Cascade Transponder R1: Tx-Rx Ports 1-2 & 3-4 Cascade Transponder R2: Tx-Rx Ports 5-6 & 7-8 Cascade Transponder R3: Tx-Rx Ports 9-10 & 11-12 Cascade Transponder R4: Tx-Rx Ports 13-14 & 15-16

Note! Management channels are default set to the Cascade transponder R4. Always start use these ports first when building a network! See chapter 4.10

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8 TECHNICAL DATA

Table 1: Misc data

Parameter Value Comment Power consumption ~25 W w/o line protection. ~26W with line prot

~28W in regenerator mode Max value

Weight 0,6 kg

Latency 3us 9us1)

1) In repeater mode

Timing Re-timing in both directions Full 3R Line rate 2,488Gb/s Equal to STM-16/OC-48 rate Embedded mgmt ch 320 kbit/s Channel capacity

Table 2: HW Revision history

Product number Rev Introduced Release

TPDDGBE R1A A3.1 1st released version.

Some SW upgrades are traffic affecting since the FPGA code is changed. Please contact Transmode TAC support for information and details on upgrades.

Table 3: Supported Transceivers

Traffic Unit Item code TP

DD

GB

E

Clie

nt fo

rmat

TRX100007 C/L GbE Optical TRX100040 C/L GbE Optical TRX100041 C GbE Optical TRX100006 C GbE Optical TRX100075 C GbE Optical TRX100014/bb L/C GbE Optical TRX100015/bb L/C GbE Optical TRX100026/bb L/C GbE Optical TRX100074/bb C GbE Optical TRX100028/xxx L/C GbE Optical TRX100073/xxx L -

TRX100025 C FE electrical GbE Electrical

C= Can be used on client port, L= can be used on line port

The TRX100025 enables electrical 100Mb/s Ethernet (FE) signal to be transported. This requires that is both ends uses same TRX. The 100Mb/s signal is upscaled in the TRX to a GbE line rate and transported as such.

For technical data on supported transceivers, see Dimensioning Guidelines within the System Manual!

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Table 4: Measuring and monitoring

Parameter/requirement Unit Min/ max/ def

Accuracy/ resolution

Hysteresis Min/max

WDM IF: Received power level measurement

dBm -28/-7/- 1/0.1

WDM IF: Received power level low dBm -28/-7/-25

WDM IF: Received power level high dBm -28/-7/-8

WDM IF: Loss of signal activation threshold dBm -28/-7/-27 1

Table 5: Network functions

Parameter/function Values Type Description

Client signal format GbE R Readable client format.

Client signal bitrate 1250 R The speed of the client signal (1000 Mbps)

Loopback on/off RW Loopback of client signal