Creating and Adding Subscriber Properties

This chapter describes how to add subscribers and create subscriber configurations using CDM. This chapter also includes instructions for setting up subscriber permanent virtual channels and transit subscriber virtual channels.

This chapter includes the following sections:

You can configure subscriber properties for both preprovisioned modules and modules that the software detects after you deploy the DSLAM chassis. When you preprovision the settings for a subscriber, this subscriber is not in service until you have inserted the module and commissioned the Cisco DSLAM chassis.

Setting Subscriber Properties

When you create subscriber properties, you use the Create Subscriber Dialog windows. This section gives an overview of the Create Subscriber Dialog windows for each of the types of modem ports---CAP ADSL, DMT-2, and STU-C (for Flexi line cards, refer to the appropriate module type, either CAP ADSL or DMT-2). A special section of guidelines for setting Reed-Solomon coding on CAP ADSL modules is also included. Instructions for setting subscriber values are in the "Steps for Creating Subscriber Properties" section.

This section includes the following topics:

Creating Subscribers on CAP ADSL Modem Ports

To create subscribers on CAP ADSL Modem ports and set values for these subscribers, you must open the Create Subscriber Dialog on CAP ADSL Modem Port window, which is shown in Figure 3-1.

Figure 3-1: Create Subscriber Dialog on CAP ADSL Modem Port Window

Table 3-1 describes the fields in the Create Subscriber Dialog on CAP ADSL Modem Port window.

Table 3-1: Create Subscriber Dialog on CAP ADSL Modem Port Fields

Field Description

Subscriber ID

Use this field to input the ID for a new subscriber. Enter 1 to 20 alphanumeric characters.

Circuit ID

Use this field to configure an identifier that is assigned to the local loop (the phone line that goes to the CPE). Setting this field is optional. The Circuit ID depends on whether a port is a competitive local exchange carrier (CLEC) or an independent local exchange carrier (ILEC).

CAPRSC¹ Config

Use to enable Reed-Solomon coding. Choose one of the following settings:

Long interleave

Short interleave

Disable 136Ds

See the "Guidelines for Setting Reed-Solomon Coding" section for more information about setting this field.

17K Baud Enabled

Choose Enabled or Disabled.

68K Baud Enabled

Choose Enabled or Disabled.

136K Baud Disabled

Choose Enabled or Disabled.

CPE² Signature

Enter the value that reflects the type of CPE that is connected to the Cisco DSLAM chassis. Use the service provider standard setting or choose 0.

Prov Upstream Rate

Enter the setting for the maximum trained upstream rate of a subscriber modem. Use the tooltips to select the valid configuration settings, which are measured in kbps.

Prov Downstream Rate

Enter the setting for the maximum trained downstream rate of a subscriber modem. Use the tooltips to select the valid configuration settings, which are measured in kbps.

Prov Upstream Margin

Enter an associated upstream margin value for a subscriber. Use the tooltips to select the valid choices for this value.

Note Margin values are assigned by the service provider and based on a subscriber service order.

Prov Downstream Margin

Enter an associated downstream margin value for a subscriber. Use the tooltips to select the valid choices for this value.

Upstream PSD³ Mask

Use the tooltips to enter a valid upstream value.

Downstream PSD Mask

Use the tooltips to enter a valid downstream value.

¹CAPRSC = CAP Reed-Solomon coding
²CPE = customer premises equipment
³PSD = power spectral density

Guidelines for Setting Reed-Solomon Coding

You can configure Reed-Solomon error coding per subscriber.

Note You can disable Reed-Solomon coding for the 136 kilobaud rate in the downstream direction for CAP ADSL modules only.

Consider the following guidelines in relation to using Reed-Solomon coding:

For Dual-port CAP ATU-C and quad-port flexi ATU-C modules, Reed-Solomon is always disabled for upstream.

You can select Reed-Solomon by choosing the Short or Long interleaved destination depth. Choose Short for time-sensitive traffic; choose Long for time-insensitive traffic.
You can disable Reed-Solomon in 136 kilobaud downstream for CAP ATU-C modules only. For all other baud rates, Reed-Solomon is always on in downstream.
For all baud rates other than 136 kilobaud downstream, Reed-Solomon coding is always enabled for CAP ATU-C modules.

For Dual-port DMT-2 ATU-C and quad-port flexi ATU-C modules:

Reed-Solomon coding in dual-port DMT-2 ATU-C can be achieved in Interleaved latency mode by setting the interleaved delay or the redundancy byte.
Reed-Solomon coding in dual-port DMT-2 ATU-C can be achieved in Fast latency mode by setting the redundancy bytes only.

G.lite---You can set G.lite Reed-Solomon coding by interleaved delay because G.lite does not operate on fast latency mode.

Creating Subscribers on DMT-2 Modem Ports

To create subscribers on DMT-2 modem ports and set the values for these subscribers, you must open the Create Subscriber Dialog on DMT2 Modem Ports window, which is shown in Figure 3-2.

Figure 3-2: Create Subscriber Dialog on a DMT-2 Modem Port Window

Table 3-2 describes the fields in the Create Subscriber Dialog window that are specific to DMT-2 modules.

Table 3-2: Create Subscriber Dialog on DMT-2 Modem Ports Window Fields

Field Description

Subscriber ID

Use this field to input the ID for a new subscriber. Enter 1 to 20 alphanumeric characters.

Circuit ID

Use this field to configure an identifier that is assigned to the local loop (the phone line that goes to the CPE). Setting this field is optional. The Circuit ID depends on whether a port is a competitive local exchange carrier (CLEC) or an independent local exchange carrier (ILEC).

G.Lite Mode

Select Enabled or Disabled to enable or disable G.lite line coding.

Trellis Code

Trellis coding is a method of forward error correction that allows the receiving modem to determine whether a given signal element is received in error.

Set to Enabled for greater error correction, but slower packet transmission.

Set to Disabled for faster packet transmission with less error correction.

Training Mode

Select Standard or Fast, as follows:

Standard training is more reliable.

Fast training allows more rapid training, but near- and far-end modems must be compatible for this feature to be successful.

Bit Swapping

Select Enabled or Disabled.

Overhead Frame

0 = Full Asynchronous. Full-overhead framing with asynchronous bit-to-modem timing (enabled synchronization control mechanism).

1 = Full Synchronous. Full-overhead framing that uses synchronous bit-to-modem timing, a disabled synchronization control mechanism.

2 = Reduced Separate Fast. Reduced-overhead framing that has separate fast and sync bytes. Bytes exist in fast and interleaved latency buffer respectively (64 kBps framing overhead).

3 = Reduced Merged Fast. Reduced overhead framing with merged fast and dsync byte, using either the fast or interleaved latency buffer (32 kBps framing overhead). This is the recommended setting.

Note G.lite line rates only allow for an overhead frame value of 3.

Interleaved Delay

The data path can be Interleaved or Fast; the recommended setting is Interleaved. The following values are valid:

0 usec

250 usec

500 usec

1000 usec

2000 usec

4000 usec

8000 usec

16000 usec

32000 usec

64000 usec

Note The interleave delay parameter applies to the dual-port DMT-2 ATU-C and the quad-port flexi ATU-C modules only.

Note An interleave delay setting of 0 is not permitted when G.lite is enabled.

Prov Upstream Rate

Enter the setting for the maximum trained upstream rate of a subscriber modem. Use the tooltips to select the valid configuration settings, which are measured in kbps.

Prov Downstream Rate

Enter the setting for the maximum trained downstream rate of a subscriber modem. Use the tooltips to select the valid configuration settings, which are measured in kbps.

Prov Upstream Margin

Enter an associated upstream margin value for a subscriber. Use the tooltips to select the valid choices for this value.

Note Margin values are assigned by the service provider and based on a subscriber service order.

Prov Downstream Margin

Enter an associated downstream margin value for a subscriber. Use the tooltips to select the valid choices for this value.

Upstream PSD Mask

Use the tooltips to enter a valid value for this field.

Note This setting is not used, but you must enter a valid value or CDM returns an error.

Downstream PSD Mask

Use the tooltips to enter a valid downstream value.

FEC Redundancy Bytes

Forward error correction redundancy bytes include the following choices:

0

2

4

6

8

12

14

16

Creating Subscribers on STU-C Modem Ports

To create subscribers on STU-C modem ports and set the values for these subscribers, you must open the Create Subscriber Dialog on STU-C Modem Ports window, which is shown in Figure 3-3.

Figure 3-3: Create Subscriber Dialog on STUC Modem Port Window

Table 3-3 describes the fields on the Create Subscriber Dialog on STU-C Modem Port window.

Table 3-3: Create Subscriber Dialog on STU-C Modem Port Window Fields

Field Description

Subscriber ID

Use this field to input the ID for a new subscriber. Enter 1 to 20 alphanumeric characters.

Circuit ID

Use this field to configure an identifier that is assigned to the local loop (the phone line that goes to the CPE). Setting this field is optional. The Circuit ID depends on whether a port is a competitive local exchange carrier (CLEC) or an independent local exchange carrier (ILEC).

Prov Upstream Rate

Enter the setting for the maximum trained upstream rate of a subscriber modem. Use the tooltips to select the valid configuration settings, which are measured in kbps.

Note For STU-C modem ports, the upstream rate should be the same as the downstream rate.

Prov Downstream Rate

Enter the setting for the maximum trained downstream rate of a subscriber modem. Use the tooltips to select the valid configuration settings, which are measured in kbps.

Prov Upstream Margin

Use the tooltips to enter a valid value for each of these fields.

Note This setting is not used, but you must enter a valid value or CDM returns an error.

Prov Downstream Margin

Upstream PSD Mask

Downstream PSD Mask

Steps for Creating Subscriber Properties

To create subscriber properties, complete the following steps. Refer to Table 3-1, Table 3-2, and Table 3-2 for descriptions of the fields in the Create Subscriber windows.

Step 1 From the left side of the Map Viewer window under the Physical map, right-click over the port for which you want to set subscriber properties.

Step 2 Choose Open Create Subscriber Dialog on [type of port]---depending on the type of port for which you are creating a subscriber.

Note You can check whether a subscriber has already been configured for a port by looking on the left side of the Map Viewer window, below the C6100v30Mgr view. If a subscriber is already assigned to a specific port, the port object under this view shows a subscriber object. CDM issues an error if you try to create a subscriber for a port to which a subscriber has already been assigned.

The Create Subscriber Dialog window, shown in Figure 3-4 and in Figure 3-5, opens.

The type of Create Subscriber Dialog window that opens depends on the type of module for which you are adding or creating subscriber properties.

Figure 3-4: Open Create Subscriber Dialog on a DMT2 Modem Port Window

Figure 3-5: Open Create Subscriber Dialog on CAPADSL Modem Port Window

Step 3 Enter the value in the Subscriber ID field.

Step 4 Enter the value for the Circuit ID field; this field is optional.

Caution You must enter a value in every field that follows. For fields with the choice of Disabled or Enabled, you must use the drop-down arrow and select either Disabled or Enabled. If you do not manually choose Disabled or Enabled, the value is read as null.

Step 5 Enter a value in the Prov Upstream Rate field to provision this rate.

Step 6 Enter a value in the Prov Downstream Rate field to provision this rate.

Step 7 Enter a value in the Prov Upstream Margin field to provision this rate.

Step 8 Enter a value in the Prov Downstream Margin field to provision this rate.

Step 9 Enter a value in the Upstream PSD Mask field; be sure to enter the - symbol.

Step 10 Enter a value in the Downstream PSD Mask field; be sure to enter the - symbol.

Step 11 For CAP ATU-C modules, select the appropriate choices in the CAPADSL-specific fields as follows:

a. Select ShortInterleave or LongInterleave in the CAPRSC Config field.

b. Select Disabled or Enabled in the 17K Baud Enable field.

c. Select Enabled or Disabled in the 68K Baud field.

d. Select Enabled or Disabled in the 136K Baud field.

Step 12 For DMT-2 modules, select the appropriate choices in the DMT-specific fields as follows:

a. Select Enabled or Disabled in the GLite field.

b. Select Enabled or Disabled in the Trellis Code field.

c. Select Standard or Fast in the Training Mode field.

d. Select Enabled or Disabled in the Bit Swapping field.

e. Use the down arrow to select the Overhead Frame value---Either struct0, struct1, struct2, or struct3.

f. Enter a value in the InterleavedDelay field.

g. Enter a value in the FEC RedundancyBytes field.

Step 13 Click Create Subscriber to create these settings for specific modules or subscribers.

A confirmation dialog box opens.

Step 14 Click Yes in the confirmation dialog box.

The Action Report window opens to inform you whether the process is successful.

Changing Subscriber Settings

To change subscriber properties, you use the Subscriber Status/Configuration Dialog window. Instructions for changing the values that you associated with subscribers are included in the following sections.

Changing Subscriber Settings for All Module Types

To change subscriber settings, complete the following steps:

Step 1 From the left side of the Map Viewer window, right-click over the type of module or line port for which you want to modify the subscriber values.

Step 2 Choose Open Subscriber Status/Configuration Dialog from the object menu.

The Subscriber Status/Configuration Dialog, which is shown in Figure 3-6, opens.

Figure 3-6: Subscriber Status/Configuration Dialog

Note This window has generic settings, not all of which apply to all types of modules.

Step 3 Use the fields on the Subscriber Configuration tab to change the settings for the subscriber.

Note See the "Setting Subscriber Properties" section, particularly Table 3-1 (Create Subscriber Dialog on CAP ADSL Modem Port Fields), Table 3-2 (Create Subscriber Dialog on DMT-2 Modem Ports Window Fields), and Table 3-3 (Create Subscriber Dialog on STU-C Modem Port Window Fields), for descriptions of these fields.

a. Subscriber ID---Enter the subscriber ID.

b. Circuit ID---Enter the circuit ID if applicable.

c. Admin Status---Use the down arrow to select locked or unlocked.

: Select locked if you want to change existing settings. A subscriber cannot receive transmission service when a module or port is locked. An unlocked state permits the module to provide service. After you have changed the settings and clicked Set Data, reset the Admin Status to unlocked, then click Set Data.

d. 17K Baud---Use the down arrow to select enabled or disabled.

e. 68K Baud---Use the down arrow to select enabled or disabled.

f. 136K Baud---Use the down arrow to select enabled or disabled.

g. Cpe Detect---Use the down arrow to select enabled or disabled.

Note Enable this setting if you have a test bus connected to the CPE and you want to test connectivity settings.

h. CPE Signature---Enter the value in the field; see the tooltips for valid values.

: This setting is a hardware identifier for the subscriber modem and is usually only used with older modems.

i. Prov Upstream Rate---Enter the value in the field; see the tooltips for valid values.

j. Prov Downstream Rate---Enter the value in the field; see the tooltips for valid values.

k. Prov Upstream Margin---Enter the value in the field; see the tooltips for valid values.

l. Prov Downstream Margin---Enter the value in the field; see the tooltips for valid values.

m. Upstream PSD Mask---Enter the value in the field; see the tooltips for valid values.

n. Downstream PSD Mask---Enter the value in the field; see the tooltips for valid values.

o. Reed-Solomon Coding---Use the down arrow to select longinterleave or shortinterleave.

Many of the values that you set on this tab are common to CAP ADSL modules, STU-C modules, and DMT-2 modules. For values that are specific to DMT-2 modules, PVC subscriber settings, and timer configuration settings, see the "Changing DMT-2, PVC, and Timer Information for Subscribers" section.

Step 4 When you have completed changing the subscriber configuration, click Set Data for these changes to take effect.

Changing DMT-2, PVC, and Timer Information for Subscribers

To change settings specific to DMT-2 modules, PVC settings, or timer information, complete the following steps:

Step 1 From the left side of the Map Viewer window, right-click over the type of module or line port for which you want to modify the subscriber values.

Step 2 Choose Open Subscriber Status/Configuration Dialog from the object menu for that port.

The Subscriber Status/Configuration Dialog, which is shown in Figure 3-6, opens.

Figure 3-7: Subscriber Status/Configuration Dialog---Subscr DMT2/PVC/Timer Info Tab

Step 3 Click the Subscr DMT2/PVC/Timer Info tab.

Step 4 In the Subscriber DMT2 Information area, set the values for each field as follows.

Note See Table 3-2, Create Subscriber Dialog on DMT-2 Modem Ports Window Fields, for more detailed information about each of these fields.

a. FEC Redundancy Bytes---Use the tooltips to choose a value, then enter that value in the field.

b. Interleaved Delay---Use the tooltips to choose a value, then enter that value in the field.

c. Overhead Frame---Use the down arrow to select struct0, struct1, struct2, or struct3.

d. Training Mode---Use the down arrow to select standard or fast.

e. Glite Mode---Use the down arrow to select enabled or disabled.

f. Bit Swapping---Use the down arrow to select enabled or disabled.

g. Trellis Code---Use the down arrow to select enabled or disabled.

Note You must set a value in each of these fields or CDM issues an error.

Step 5 In the Subscriber PVC Information area, PVC Idle Mark field, use the tooltip to choose a value, then enter that value in the field.

This setting specifies the number of cells that have to pass through the network before activating the idle timer. This value is in cells per minute.

Note The Subscriber Timer Configuration settings are specific for pooled subscribers.

Step 6 In the Subscriber Timer Configuration area, set the following values for pooled subscribers:

a. Timer Type---Set this value by using the down arrow to set the type of timer.

b. Session Timer---Enter the value for the number of minutes a subscriber can be online.

c. Idle Timer---Enter the value in minutes for timeout by using the down arrow for the length of time a subscriber modem can be idle before it times out.

d. Lockout Timer---Enter the value in minutes by using the down arrow to specify the amount of time that a subscriber will be unable to connect.

Creating Subscriber Properties for Digital Off-Hook Configurations

For DSLAM configurations that use digital off-hook (DOH) or pooled subscribers, you enter the subscriber properties in the same way as described in the "Steps for Setting Subscriber VPI/VCI Addresses" section. However, CAP ADSL modules are the only line card modules that support DOH configurations. DOH configurations should have a line controller chassis, a LIM controller module, and line interface modules. For information about setting up DOH configurations, see the "Creating Pooled Configurations" section.

Configuring ATM Virtual Channels and Subscriber PVCs

To configure ATM channel mapping between the CPE and the ATM network through the Cisco 6100/6130 DSLAM chassis, you need to configure the ATM virtual channels. This section includes some general guidelines to consider before you set up ATM virtual channels for your subscriber and instructions for setting the virtual path identifier (VPI) and virtual channel identifier (VCI) addresses for your subscribers.

You create PVC subscriber settings on the PVC Create tab of the PVC Info/Create/Delete Dialog window, shown in Figure 3-8.

Figure 3-8: PVC Info/Create/Delete Dialog Window---PVC Create Tab

Table 3-4 describes the fields on the PVC Create tab.

Table 3-4: PVC Create Tab Field Descriptions

Field Description

PVC Type

Choose Virtual Channel Connection.

Note The Virtual Path Connection option is not supported with this release of CDM NI-1.

PVC Path

Specify the type of path for the PVC connection, either Fast or Interleaved.

PVC Q Priority

Specify the priority from one of the following choices; the queue priority is denoted by "qp."

Voice = qp 1

Voice Signalling = qp 2

Data = qp 3; this is the recommended setting.

Note Passing standard data over voice transfer or voice signalling causes all transfers except pings to fail.

Subscr VPI

Field for the Subscriber VPI, which is always 1.

Subscr VCI

Set the Subscriber VCI in this field; can be 0 to 3.

Network VPI

Set the Network VPI in this field keeping in mind the standards restrictions. (See the "Guidelines for Adding New VPI/VCI Addresses" section for more information on the standards restrictions.)

Network VCI

Set the Network VCI in this field keeping in mind the standards restrictions.

Guidelines for Configuring ATM Virtual Channels

Service provisioning for ATM must adhere to a variety of configuration standards, which prevent errors when establishing ATM connections. CDM includes service provisioning logic to ensure valid combinations of configuration data.

Consider the following guidelines before you configure ATM virtual channels:

You can provision more than one permanent virtual channel (PVC) for each subscriber.
Each PVC contains both a network-side and a subscriber-side virtual channel connection (VCC).
Each VCC has both a VPI and a VCI.
VPC switching is not supported in this release.
If you enter VCI numbers, you must also enter VPI numbers.
You must change the Admin Status for a subscriber to locked before you configure PVCs and make sure the Service Status is out of service.

Steps for Setting Subscriber VPI/VCI Addresses

This section provides instructions for setting VPI/VCI addresses for subscribers.

Note CDM supports a virtual connection for quad-port STU-C modules that is consistent with that provided for CAP ATU-C modules. Except for the training rates, subscriber provisioning for the ATM virtual channel for quad-port STU-C modules is similar to that of the dual-port CAP ATU-C module.

Creating New VPI/VCI Addresses

You can create new VPI/VCI addresses on the PVC Info/Create/Delete Dialog window, which is described in the preceding section. The following sections include guidelines and steps for adding new VPI/VCI addresses.

Guidelines for Adding New VPI/VCI Addresses

The Permanent Virtual Connection group box on the Service Provisioning dialog box includes an area for setting Subscriber IDs and an area for setting Network IDs. Consider the following guidelines:

You must configure a VPI and a VCI number combination for both the subscriber and network sides.
Subscriber PVC considerations must be either subscriber VCI considerations or subscriber side considerations:
- You can map up to four VCCs per subscriber to specific-use or general-use virtual paths on the network side.
- VCCs are addressed on VPI 1 and VCI 0 to 3.
- The default setting (for the Cisco 675) is VPI 1 and VCI 1.
- VPI 1 is the default; this field is dimmed and you cannot modify it.
Network-side considerations:

Steps for Creating VPI/VCI Addresses

Complete the following steps to create new subscriber and network VPI/VCI addresses. Refer to the field descriptions in Table 3-4.

Step 1 From the Managed Object map on the Map Viewer window, right-click over the port under the chassis and module for which you want to create VPI/VCI addresses to access the object menu.

Step 2 Choose Open Subscriber PVC Operations from the object menu to open the PVC/Info/Create/Delete Dialog window, which is shown in Figure 3-8 and which opens to the PVC Create tab.

On the PVC Create tab, set the PVC and VPI/VCI parameters as follows. Use the tooltips for lists of valid values.

Step 3 Use the down arrow in the PVC Type field to select Virtual Channel Connection.

Note Virtual Path Connections are not supported in this version of CDM NI-1.

Step 4 Use the down arrow in the PVC Path field to select either Fast or Interleaved.

Step 5 Use the down arrow in the PVC Q Priority to select Voice (qp1), Voice Signalling (qp2), or Data (qp3), the recommended setting.

Step 6 Make sure the Subscr VPI field is set to 1.

Step 7 Enter the appropriate value in the Subscr VCI field to set the subscriber VCI value.

Step 8 Enter an appropriate value in the Network VPI field to set the network VPI value.

Step 9 Enter an appropriate value in the Network VCI field to set the network VCI value.

Step 10 Click the Save icon in the toolbar.

Step 11 Click Create New PVC.

Step 12 Click Yes in the confirmation dialog box.

An Action Report window opens to inform you whether this procedure is successful.

Note To modify an existing VPI/VCI address, you must first delete it from the PVC Info/Delete tab on the PVC Info/Create/Delete Dialog window, and then create it with the new parameters by repeating this procedure. See the "Steps for Viewing VPI/VCI Addresses" section for instructions on viewing and deleting subscriber and network VPI/VCI parameters.

Steps for Viewing VPI/VCI Addresses

Complete the following steps to view VPI/VCI addresses for subscribers. Refer to the field descriptions in Table 3-4.

Step 1 From the Managed Object map on the Map Viewer window, right-click over the port under the chassis and module for which you want to create VPI/VCI addresses to access the object menu.

Step 2 Choose Open Subscriber PVC Operations from the object menu to open the PVC/Info/Create/Delete Dialog window.

Step 3 Click the PVC Info/Delete tab, shown in Figure 3-9.

Figure 3-9: PVC Info/Create/Delete Dialog Window

Step 4 On the left side of the PVC Info/Create/Delete Dialog window, highlight the subscriber whose PVC settings you want to view or delete; for example, click C6100v30SubscriberInfo-4 to highlight it.

The following PVC data for that subscriber displays on the PVC Info/Delete tab:

PVC Index
PVC Type
Subscriber VPI
Subscriber VCI
Network VPI
Network VCI
Q (Queue) Priority
PVC Path

Step 5 Use the scroll bar to scroll to all of these data fields.

Note The tooltip displays the MIB variable name for each parameter as you move your cursor across each field.

Deleting VPI/VCI Addresses

Complete the following steps to delete VPI/VCI addresses for subscribers:

Step 1 From the Managed Object map on the Map Viewer window, right-click over the port under the chassis and module for which you want to create VPI/VCI addresses to access the object menu.

Step 2 Choose Open Subscriber PVC Operations from the object menu to open the PVC/Info/Create/Delete Dialog window.

Step 3 Click the PVC Info/Delete tab, shown in Figure 3-9.

Figure 3-10: PVC Info/Create/Delete Dialog Window

Step 5 Click Delete PVC.

Step 6 Click Yes in the confirmation dialog box.

If your purpose for deleting this subscriber PVC setting is to modify it, you can now create new settings for that subscriber by following the instructions in the "Creating New VPI/VCI Addresses" section.

Configuring Subtended Systems

This section describes how to set up transit subscribers on subtended systems and how to set subtended subscriber PVCs. Subtending allows you to use one ATM backbone for multiple Cisco 6100/6130 DSLAM chassis.

Subtending is a DSLAM feature that reduces the cost per subscriber by amortizing the expense of the network interface module and the edge-switch port connection over a large number of subscribers. Subtending provides the following advantages:

Services and aggregates the data from one or more remotely located Cisco 6100/6130 DSLAM chassis into a host Cisco 6100/6130 DSLAM chassis. This configuration takes advantage of the data network interface on the host Cisco 6100/6130 DSLAM.

Reduces the number of ATM edge-switch ports that are required to terminate the Cisco 6100/6130 DSLAM chassis.

Figure 3-11 illustrates the connections of a subtended DSLAM system with six subtended systems.

Figure 3-11: Subtending Connections

Figure 3-12 shows valid address ranges for each DSLAM.

Figure 3-12: Valid ATM Connection Space

Guidelines for Configuring a Subtended System

The following guidelines apply to subtending Cisco 6100/6130 DSLAM chassis nodes:

You can subtend up to six Cisco 6100/6130 DSLAM chassis to one subtending host Cisco 6100/6130 that is connected to the ATM network backbone (see Figure 3-11).
Switch subtended VCCs to the ATM bearer service either through VCCs or VPCs.
Use standard Cisco 6100/6130 DSLAM network interface modules on the subtended DSLAM for interconnection to the host node.
Subtend as many as seven chassis to support up to 2800 subscribers per network connection.
The Cisco 6100/6130 DSLAM chassis can support up to 9000 VCCs. The total number depends on the amount of system-controller and network-interface RAM that the resident software application requires.
Cisco recommends a maximum of 1500 VCCs within the valid address space. Software limits might not be built in because of the temporary nature of this ceiling.
Cisco recommends that you provision transit subscribers on the subtend ports of the host Cisco 6100/6130 DSLAM for each of the subscribers that are provisioned on the subtended ports.
You must assign the transit subscribers on the subtending host Cisco 6100/6130 DSLAM the same VPI/VCI addresses that you assigned to them on the subtended node.

: For example, if you assign subscriber A to VPI 5 and VCI 10 on the subtended Cisco 6100/6130 DSLAM, you must assign transit subscriber A to VPI 5 and VCI 10 on the host system. Transit subscribers on the subtending host system are logical containers for traffic that passes from the subtended DSLAM; therefore, you can create multiple transit subscribers on one port.

Each VPI/VCI must be unique on any one network interface, subtended or not, and must be the same on both ingress and egress.

You can define four VCCs per subscriber line that enters from the subtended Cisco 6100/6130 DSLAM.

You can assign subscribers from the subtended node across VCCs on the subtending host. That is, you can assign all subscribers from a subtended node to VCC 1, or you can distribute them across all of the 32 VCCs.

You can group subscribers as you choose. For example, if you assign all subscribers from one subtended node to one VCC on the subtending host, you can lock all those subscribers at one time if you need to bring the node down for any reason.
You can subtend as many as seven chassis to support up to 2800 subscribers per network connection.
You must conduct data path tests between your Cisco 6100 Series system and far-end equipment. Refer to the Cisco 6100/6130 System with NI-1 documentation for more information about data path tests.

Subtending Subscribers

To subtend a Cisco 6100/6130 DSLAM chassis, you create settings for the local transit subscribers in the same manner as you would any subscribers. The subtend module should be preprovisioned on your system. The subtend module displays on the left side of the Map Viewer window as C6100v30SubtendPort; each subtend module has two ports.

Steps for Creating Transit Subscribers

Complete the following steps to create transit subscribers:

Step 1 From the left side of the Map Viewer window under the Physical view map, locate the C6100v30SubtendModule port for which you want to create transit subscribers, and right-click C6100v30SubtendPort to open the object menu.

Step 2 Choose Open Transit Subscriber Create/Config/Delete Dialog window from the object menu.

Figure 3-13: Transit Subscriber Create/Delete/Info Dialog Window

Step 3 In the Create New Transit Subscriber area, enter the ID for this subscriber in the Subscriber ID field.

Step 4 Click Create Transit Subscriber.

Step 5 Continue to enter subscriber IDs for each transit subscriber, and then click Create Transit Subscriber.

The transit subscribers that you create are visible on the left side of the Map Viewer window under the C6100v30SubtendModule, C6100v30SubtendPort views, and display as C6100v30trSubscr. See the "Steps for Creating Subscriber Properties" section for steps to set the subscriber values for each transit subscriber and the "Changing Subscriber Settings" section for steps to change subscriber settings.

Steps for Deleting Transit Subscribers

To delete a transit subscriber, complete the following steps:

Step 1 From the left side of the Map Viewer window under the Physical view map, locate the C6100v30Subtend port for which you want to delete transit subscribers, and right-click C6100v30SubtendPort to open the object menu.

Step 2 Choose Open Transit Subscriber Create/Config/Delete Dialog window from the object menu.

Figure 3-14: Transit Subscriber Create/Delete/Info Dialog Window

Step 3 Click the TrSubscr Config/Delete tab.

Step 4 From the list of transit subscribers on the left of this window, select the subscriber ID of the transit subscriber that you want to delete in the Tr Subscrid field.

Step 5 Check to see whether the Admin Status field is set to locked; if it is set to unlocked, use the down arrow to select locked.

Step 6 Click Set Data to change the Admin Status.

Step 7 Click Delete Transit Subscriber to delete this subscriber.

Step 8 Repeat Step 4 to Step 7 for all transit subscribers that you want to delete.

Steps for Setting Transit Subscriber PVCs

Complete the following steps to set transit subscriber PVCs. See the "Guidelines for Configuring ATM Virtual Channels" section for more information on setting PVCs.

Step 1 From the left side of the Map Viewer window, locate the C6100v30trSubscr under the C6100v30Subtend port for which you want to set transit subscriber PVCs, and right-click C6100v30trSubscr to open the object menu.

Step 2 Choose Open Transit Subscriber PVC Operation Dialog.

Figure 3-15: TrSubscrPVC Create/Delete/Info Window

The Create TrPVC tab has two areas, the Transit Subscriber Info area and the Create TrSubscriber PVC area. Refer to the field descriptions in Table 3-4. Also use the tooltips for lists of valid values.

Step 3 From the left side of this window, highlight the transit subscriber for which you want to set PVCs.

Step 4 Use the down arrow in the PVC Type field to select Virtual Channel Connection.

Note Virtual Path Connections are not supported in this version of CDM NI-1.

Step 5 Use the down arrow in the PVC Q Priority to select Voice (qp1), Voice Signalling (qp2), or the recommended setting, Data (qp3).

Step 6 Use the down arrow to select a value for the Subscr VPI field.

Step 7 Enter the appropriate value in the Subscr VCI field to set the subscriber VCI value.

Step 8 Enter an appropriate value in the Network VPI field to set the network VPI value.

Step 9 Enter an appropriate value in the Network VCI field to set the network VCI value.

Step 10 Click Create Transit PVC.

Step 11 Click Yes in the confirmation dialog box.

An Action Report window opens to inform you whether this procedure is successful.

Note To modify an existing transit subscriber VPI/VCI address, you must first delete it from the trPVC Delete/Info tab on the TrSubscrPVC Create/Delete window, and then create it with the new parameters by repeating this procedure. See the "Viewing Transit Subscriber VPI/VCI Addresses" section for instructions on viewing and deleting subscriber and network VPI/VCI parameters.

Viewing Transit Subscriber VPI/VCI Addresses

Complete the following steps to view transit subscriber VPI/VCI addresses.

Step 1 From the left side of the Map Viewer window, locate the C6100v30trSubscr under the C6100v30Subtend Port for which you want to view transit subscriber PVCs and right-click C6100v30trSubscr to open the object menu.

Step 2 Choose Open Transit Subscriber PVC Operation Dialog.

Step 3 Click the TrPVC Delete/Info tab.

Step 4 On the left side of the TrPVC Delete Info tab, highlight the transit subscriber whose PVC settings you want to view; for example, click C6100v30SubscriberInfo-4 to highlight it.

The following PVC data for that transit subscriber displays on the TrPVC Delete/Info tab:

PVC Index
PVC Type
TrSubscriber VPI
TrSubscriber VCI
Network VPI
Network VCI
Q (Queue) Priority
PVC Path

Step 5 Use the scroll bar to scroll to all of these data fields.

Note The tooltip displays the MIB variable name for each parameter as you move your cursor across each field.

Deleting Transit Subscribers

Complete the following steps to delete transit subscriber VPI/VCI addresses.

Step 1 From the left side of the Map Viewer window, locate the C6100v30trSubscr under the C6100v30Subtend Port for which you want to delete transit subscriber PVCs and right-click C6100v30trSubscr to open the object menu.

Step 2 Choose Open Transit Subscriber PVC Operation Dialog.

Step 3 Click the TrPVC Delete/Info tab.

Step 4 On the left side of the TrPVC Delete Info tab, highlight the transit subscriber whose PVC settings you want to view or delete; for example, click C6100v30SubscriberInfo-4 to highlight it.

Step 5 Click Delete TrPVC.

Step 6 Click Yes in the confirmation dialog box.

Table of Contents

Creating and Adding Subscriber Properties