Creating Subscriber Profiles and Setting ATM and IMA Connections

This chapter describes how to add subscribers and apply profiles to a subscriber using CDM. This chapter also describes how to set ATM and inverse multiplexing over ATM (IMA) connections.

This chapter includes the following sections:

Introduction to Using Profiles

You can use profiles to apply a set of existing values (parameters) to several objects of the same type. Using profiles saves you from having to enter the same data many times. After you create a profile, you can apply it to other subscriber lines, as applicable.

CDM provides the following types of configurations:

Configurations for uploading profiles and connections
Profile configurations:
- ATM Quality of Service (QoS)
- Discrete multitone (DMT) profiles
- Asymmetric digital subscriber line (ADSL) profiles
- Symmetrical digital subscriber line (SDSL) profiles
Permanent virtual connection (PVC) and soft permanent virtual connection (SPVC) configurations
Virtual channel link (VCL) configurations

Note ATM QoS profiles are also known as ATM traffic descriptors.

When you add a subscriber, you do the following tasks:

Create and apply a profile to a subscriber line
Create and apply a PVC or SPVC
Configure two VCLs, which are the end points of the connection (one outgoing port and one incoming port).

A subscriber profile in CDM is made up of a subscriber line, which has a PVC or SPVC with two VCLs at each end.

Creating and Applying Profiles and Establishing Subscriber Connections

You can create and apply profiles and connections in the Map Viewer window. The following steps summarize the process for creating and applying profiles and establishing subscriber connections:

Step 1 Access the object menu for the chassis object to which you want to associate a profile.

Step 2 Upload existing profiles.

Step 3 Create a profile.

Step 4 Apply the profile to the subscriber line.

Step 5 Create a PVC or SPVC object.

Step 6 Apply a QoS profile to the PVC or SPVC.

Step 7 Create the PVC or SPVC to the device.

Step 8 (Optional) Start performance polling on the connection.

Uploading Profiles

If connections and profiles are already configured on a device, and you want to includes those connections or profiles into CDM, you can upload them. You can upload the following connections and profiles:

ATM connections and ATM QoS profiles
ADSL profiles and DMT profiles

Setting Telnet Passwords

Before you can upload any connections or profiles, make sure your Telnet passwords are configured in CDM.

To check Telnet passwords:

Step 1 In the Map Viewer window, within the CDM Manager view, right-click a chassis object and select Cisco DSL Manager > Physical > Chassis > Management Information.

The Management Information window appears (Figure 4-1).

Figure 4-1: Management Information Window—IOS/Command Line Security Tab

Step 2 Click the IOS/Command Line Security tab (Figure 4-2).

Step 3 Enter your User Name, Exec Password, and Login Password.

Step 4 Click the Save Locally button to save your passwords locally on the device or chassis.

Uploading ATM Connections and ATM QoS Profiles

When you upload existing ATM connections and ATM QoS profiles, the software discovers any existing ATM connections and places them into the Normal state. Thus, management of these connections begins automatically. After these connections and profiles are uploaded, you can view and adjust them on the CDM GUI.

Step 1 From the left side of the Map Viewer window, within the CDM Manager view, right-click a chassis object to open the object menu.

Step 2 Choose Cisco DSL Manager > Logical > Connection > Upload Management from the object menu.

The ATM Connection Upload window opens, which is shown in Figure 4-2.

Figure 4-2: ATM Connection Upload Window

Step 3 The name of the chassis that you selected is highlighted in the list box on the left side of the window.

Uploaded ATM connections and ATM QoS profiles are named according to the following formats:

ATM connections—PVC_(index of incoming port.VPI value.VCI value.index of outgoing port.
VPI value.VCI value)
ATM QoS profiles—QoSProfile_(assigned number)

Step 4 Click Upload.

All ATM connections and ATM QoS profiles that are currently configured on the selected device are uploaded into CDM.

Uploading ADSL and DMT Profiles

When you upload existing ADSL and DMT profiles, any existing ADSL and DMT profiles are created in CDM. After these profiles are uploaded, you can view and modify them in CDM.

Step 1 From the left side of the Map Viewer window, within the CDM Manager view, right-click the chassis object to which you want to upload the profile.

Step 2 Choose Cisco DSL Manager > Physical > Interface > ADSL (or DMT) > Upload from the object menu.

The ADSL or DMT Upload Profile window opens, which is shown in Figure 4-3.

Figure 4-3: DMT Upload Profile Window

Step 3 The name of the chassis that you selected is highlighted in the list box on the left side of the window.

Uploaded ADSL and DMT profiles are named according to the following formats:

ADSL profiles—ADSLManager_(assigned number)
DMT profiles—DMTManager_(assigned number)

Step 4 Click Upload.

All DMT, ADSL, or SDSL profiles, depending on which type of profile you are uploading, that are currently configured on the selected device are uploaded into CDM.

Creating DMT Profiles

You can create DMT profiles to apply to DMT interfaces. You can apply one DMT profile to multiple DMT interfaces on a card.

Note After you create a DMT profile, you can edit that profile only if it is not being used. If any connections are using that profile, you are not allowed to alter the profile. You can view and identify the connections that are using a certain profile by running a Cisco EMF query against the profile name (refer to the Cisco Element Manager Framework User Guide for details about running a query).

Note DMT profiles are saved and stored in CDM.

Steps to Open the DMT Interface Profile Window

To open the DMT Interface Profiles window, complete the following steps:

Step 1 From the left side of the Map Viewer window, within the CDM Manager view, right-click a DMT line card to access the object menu.

Step 2 Choose Cisco DSL Manager > Physical > Interface > DMT > Profile from the object menu.

The DMT Interface Profile window opens, which is shown in Figure 4-4.

Figure 4-4: DMT Interface Profile Window—Profile Tab

The DMT Interface Profile window contains only the Profile tab. The Profile tab contains four areas:

Profile Information
Common
Downstream/Upstream
Actions

Table 4-1 describes the fields in the Profile Information, Common, and Downstream/Upstream areas of the DMT Interface Profile window.

Table 4-1: DMT Interface Profile Window Field Descriptions

Field Description

Profile Type

Enter the type of profile you are creating (in this instance, a DMT interface profile.)

Profile Description

Enter a description for this profile. If you are copying a profile, use the horizontal and vertical scroll bar to view all the text in this field.

Bit Swap

Use the down arrow to select true or false to set or turn off bit swapping. Bit swapping can maximize error performance by attempting to maintain an acceptable margin for each bin by equalizing the margin across all bins through bit reallocation.

Bit Swap Margin From (in dB)

Enter an appropriate value from the range of 1 to 9. The ATU-C marks a bin as a "from" bin if the bin margin falls below a specified target value, and the difference between the margin and target exceeds a specified threshold value.

If you set this value too low, the ATU-C may frequently toggle the bit allocation on bins. If impulse noise is present, the frequent toggling of bit allocation can cause errors. If you set this value too high, the ATU-C may not identify an adequate number of bins from which it can swap bits. This situation decreases the ability of the ATU-C to equalize the margin across all bins.

Bit Swap Margin To (in dB)

Enter an appropriate value from the range of 1 to 9. The ATU-C marks a bin as a "to" bin if the bin margin exceeds a specified target value and the difference between the margin and target exceeds a specified threshold value.

If this value is too low, the ATU-C may toggle bit allocation on bins frequently. If impulse noise is present, the frequent toggling of bit allocation can cause errors. If this value is too high, the ATU-C may not identify an adequate number of bins to which it can swap bits, which decreases the ability of the ATU-C to equalize the margin across all bins.

Training Mode

Use the down arrow to select fast or standard training. Displays the mode employed by the downstream device and upstream device when the devices are training against each other. One of two training modes can be used. The default training mode for ADSL modems is standard.

Trellis Coding

Use the down arrow to select enable or disable to set whether trellis coding is used on the DMT line.

Operating Mode

Use the down arrow to select which line-operating mode the ADSL line will use. An ADSL line uses of one of two operating modes—automatic and splitterless.

Overhead Framing

Use the down arrow to set the negotiated overhead framing structure that the downstream device and upstream device use. Select from the following modes:

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.

Check Bytes (in bytes)

Use the down arrow to specify the initial number of FEC redundancy bytes that the downstream and upstream device frames are transmitting over the interleaved channel during the training sequence. The downstream device can fall back from this value depending on the aggregate data rate achieved during training. The value of this object must be an integral multiple of the value displayed in the Codeword Size field. Valid choices include—0, 2, 4, 6, 8, 10, 12, 14, and 16.

Codeword Size (in symbols)

Use the down arrow to select the number of symbols per codeword that the downstream and upstream messages are using on an interleaved channel during the training sequence. The downstream can fall back from this value, based on the aggregate data rate achieved during training. Valid choices include—0, 1, 2, 4, 8, and 16.

Steps for Creating or Copying an Interface Profile

You can create a new profile by entering information in the required fields, or by copying the parameters from an existing profile.

To create a new profile by entering information in the required fields, complete these steps:

Step 1 Click Create Profile.

Step 2 Enter the new profile name in the Prompt dialog box.

Step 3 Complete the required fields in the Profile tab, as described in Table 4-1.

Step 4 Click Save to save your changes.

To copy a profile, that is create a profile based on an existing profile, complete these steps:

Step 1 Click Create Profile.

Step 2 Click the profile that you want to model from the profile list box on the left side of the window.

Step 3 In the Profile Type field, enter a name for the new profile.

Step 4 Modify the parameters in the Profile tab, if necessary, as described in Table 4-1.

Step 5 Click Save to save your changes.

Deleting a DMT Profile

To delete an existing DMT profile, complete these steps:

Step 1 From the left side of the Map Viewer window, right-click the profile name you want to delete from the list to access the object menu.

Step 2 Choose Deployment > Delete Objects from the object menu.

The Deployment Wizard—Summary window opens.

Figure 4-5: Deployment Wizard—Summary Window

Step 3 Click Finish to delete the selected object.

The Action Report dialog box confirms whether the deletion process is successful.

Note You are unable to delete a profile that is currently in use. If you want to view the connections that are using a specific profile, you can run a Cisco EMF query against the profile name. Refer to the Cisco Element Management Framework User Guide for instructions on running a query.

Creating ATM QoS Profiles

You can open the QoS Profile windows to create and save ATM QoS profiles, which are also known as ATM traffic descriptors. CDM stores ATM QoS profiles and creates the parameters on the device when CDM creates the PVC or SPVC.

Note After you create an ATM QoS profile, you can only edit that profile if the profile is not being used. If any connections are using that profile, CDM prevents you from altering the profile. You can view which specific connections are using a certain profile by running a Cisco EMF query against the profile name. Refer to the Cisco Element Management Framework User Guide for instructions on running a query.

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.

Viewing the ATM QoS Profile Configuration Window

To open the ATM QoS Profile Configuration window and create an ATM QoS profile, complete the following steps:

Step 1 From the left side of the Map Viewer window, within the CDM Manager view, right-click a chassis object to open the object menu.

Step 2 Choose Cisco DSL Manager > Logical > Connection > QoS Profile from the object menu.

The ATM QoS Profiles Configuration window opens, which is shown in Figure 4-6.

Figure 4-6: ATM QoS Profiles Configuration Window—Profile Tab

The ATM QoS Profiles Configuration window contains two tabs—Profile and RxTx Parameters. The ATM QoS Profiles Configuration window opens to the Profile tab. The RxTx Parameters tab, which is shown in Figure 4-7, contains the receive and transmit parameters for the selected ATM QoS profile.

Figure 4-7: ATM QoS Profiles Configuration Window—RxTx Parameters Tab

You can create a new profile by entering information in the required fields, or copy the parameters from an existing profile.

Steps for Creating a New ATM QoS Profile

Create a new profile as follows:

Step 1 Click Create Profile.

Step 2 Enter the new profile name in the Prompt dialog box, and then click OK.

Step 3 Enter the appropriate information in the required fields in the Profile tab:

a. In the Profile Type field, enter the type of profile that you are creating, for example, ATM QoS profile.

b. In the Profile Descriptions field, enter a description for this profile.

: Use the horizontal and vertical scroll bars to navigate.

Step 4 Click the RxTx Parameters tab, and enter any parameters that you want to set on this tab in either the Receive Parameters area or the Transmit Parameters area, as follows:

a. Use the down arrow to select from the choices in the QoS Category field, which indicates the current QoS category of the selected profile.

b. Use the down arrow to select from the choices in the CLP (cell loss priority) field, which indicates the value in the ATM cell header that determines the probability of a cell being dropped if the network becomes congested.

: Cells that have 0 (zero) in the CLP field have ensured priority and are unlikely to be dropped. Cells with 1 in the CLP field have best-effort priority and might be dropped during periods of congestion so that resources are free to handle ensured traffic.

c. Enter the appropriate value in the SCR (sustainable cell rate) field, which indicates the maximum sustained-cell-rate (scr) traffic parameter that is allowed for connections.

d. Enter the appropriate value in the PCR (peak cell rate), which indicates the maximum transmission rate of cells.

e. Enter the appropriate value in the MCR (minimum cell rate) field, which indicates the lowest acceptable transmission rate (specified in cells per second) for connections.

f. Enter the appropriate value in the MBCS (maximum burst cell size) field, which indicates the maximum burst cell size permitted for cells received for connections on this interface.

g. Enter the appropriate value in the CDVT (cell delay variation tolerance) field, which indicates the cell delay variation estimated to be experienced by cells for connections received on this interface.

Step 5 Click Save to save your changes.

Steps for Creating an ATM Qos Profile from a Template Profile

To create a profile based on an existing profile, complete these steps:

Step 1 Select the profile that you want to use as a template from the profile list box on the left side of the window.

Step 2 Click Create Profile.

Step 3 Enter a name for the profile in the Prompt dialog box.

Step 4 Enter the type for the new profile in the Profile Type field.

Step 5 Enter a description of the new profile in the Profile Description field.

Step 6 Modify the parameters in the RxTx Parameters tab, if necessary.

Note See Step 4 in the "Steps for Creating an ATM Qos Profile from a Template Profile" section for descriptions of these parameters.

Step 7 Click Save to save your changes.

Deleting an ATM QoS Profile

To delete an existing ATM QoS profile, complete the following steps:

Step 1 From the left side of the Map Viewer window, right-click the profile name you want to delete in the list to open the object menu.

Step 2 Choose Deployment > Delete Objects from the object menu.

The Deployment Wizard—Summary window opens.

Step 3 Click Finish to delete the selected object.

The Deployment Wizard—Summary window displays a message to confirm successful deletion.

Note You cannot delete a profile that is currently in use. To view the connections that use a specific profile, run a Cisco EMF query against the profile name. Refer to the Cisco Element Management Framework User Guide for instructions on running a query.

Creating an ADSL Profile

You can create ADSL profiles to apply to DMT interfaces. You can create one ADSL profile and use it as a template for multiple DMT interfaces on a card.

Note After you create an ADSL profile, you can edit that profile only if it is not being used. If any connections are using that profile, you are not allowed to alter the profile. You can view the connections that are using a certain profile by running a Cisco EMF query against the profile name. Refer to the Cisco Element Management Framework User Guide for instructions on running a query.

Note ADSL profiles are saved and stored in CDM.

To create a profile or template in the ADSL Interface Profiles window, complete these steps:

Step 1 From the left side of the Map Viewer window, within the CDM Manager view, right-click a DMT line card to access the object menu.

Step 2 Choose Cisco DSL Manager > Physical > Interface > ADSL > Profile from the object menu.

The ADSL Interface Profile window opens, which is shown in Figure 4-8. This window has one tab, the Profiles tab.

Figure 4-8: ADSL Interface Profile Window

You can create a new profile by entering information in the required fields; you can use an existing profile as a template and copy its parameters into a new profile. To create a profile, follow these steps:

To create a new profile, proceed as follows:

Step 3 Click Create Profile.

Step 4 Enter the name for the new profile in the Prompt dialog box.

Step 5 Enter the type of profile in the Type field.

Step 6 Enter a description of the profile in the Description field.

Step 7 In the ADSL Parameters area, enter the appropriate information in the available Downstream and Upstream column fields, as follows, by using the tooltips as a guide for valid entries.

a. In the Target Signal/Noise Margin (tenth dB) field, enter the value to set the noise margin that the modem must achieve with a BER of 10^-7 or better to successfully complete initialization.

If the noise margin is above this level, the modem should attempt to reduce its power output to optimize its operation.
If the noise margin falls below this level, the modem attempts to increase its power output.
If the increase is not possible, the modem attempts to reinitialize or shut down.

Note Configured allocation ratios of excess transmit bandwidth between fast and interleaved channels only apply when two-channel mode and RADSL are supported.

b. In the Interleave Channel Delay (ms), enter the interleave delay setting for this channel.

: Interleave delay applies only to the interleave channel and defines the mapping, or relative spacing, that is between subsequent input bytes at the interleaver input and the placement of the input bytes in the bit stream at the interleaver output.

c. In the Interleave Minimum Transmit Rate (bps) field, enter the value for the configured minimum transmit rate for "Interleave" channels, in bits per second.

d. In the Interleave Maximum Transmit Rate (bps) field, enter the value for the configured maximum transmit rate for "Interleave" channels, in bits per second.

e. Click Save to save your changes.

To create a new profile based on an existing profile, complete these steps:

Step 1 From the list box on the left of the window, click the profile that you want to use as a template.

Step 2 Click Create Profile.

Step 3 Enter the name for the new profile in Prompt dialog box.

Step 4 Enter the type for the new profile in the Type field.

Step 5 Enter a description in the Description field.

Step 6 Modify any parameters that you want to change (see Step 7 in the previous set of steps for descriptions of the ADSL Parameters fields).

Step 7 Click Save to save your changes.

Deleting an ADSL Profile

To delete an existing ADSL Profile, follow these steps:

Step 1 From the list box on the left side of the ADSL Interface Profile window, which is shown in Figure 4-8, right-click the profile name you want to delete to access the object menu.

Step 2 Choose Deployment > Delete Objects.

The Deployment Wizard—Summary window opens.

Step 3 Click Finish to delete the selected object.

A message displays in the Deployment Wizard—Summary window to confirm successful deletion.

Note You cannot delete a profile that is currently in use. If you want to view the connections that are using a specific profile, run a Cisco EMF query against the profile name. Refer to the Cisco Element Management Framework User Guide for instructions on running a query.

Applying a DMT Profile to a DMT Interface

After you create a DMT profile, you can apply that profile to a DMT interface. You can apply one DMT profile to multiple DMT interfaces on a card.

Note DMT profiles are saved and stored in CDM.

To view the DMT Interface Configuration window and apply DMT profiles, complete these steps:

Step 1 From the left side of the Map Viewer window, within the CDM Manager view, right-click a DMT line card to access the object menu.

Step 2 Choose Cisco DSL Manager > Physical > Interface > DMT > Config from the object menu.

The DMT Interface Configuration window opens, which is shown in Figure 4-9. The DMT Interface Configuration window has one tab, the Configuration tab.

Figure 4-9: DMT Interface Configuration

Step 3 From the list boxes on the left side of the window, select the chassis, card, and DMT interface to which you want to apply the DMT profile.

Any current profiles applied to the selected DMT interface appear in the tab on the right.

Step 4 From the Menu Bar, select Edit > Apply Profile to display a list of profiles.

Step 5 Click the name of the DMT profile that you want to apply.

After you apply the profile, a status line displays briefly in the lower left corner of the window, which indicates whether the profile is applied successfully. The information for the selected profile appears in the tab on the right.

The DMT Interface Configuration tab contains four areas:

Profile Information
Common
Downstream/Upstream
Actions

See Table 4-2 for descriptions of the fields on this window.

Table 4-2: DMT Interface Profile Window Field Descriptions

Field Description

Profile Type

Enter the type of profile you are creating (in this instance, a DMT interface profile.)

Profile Description

Enter a description for this profile. If you are copying a profile, use the horizontal and vertical scroll bar to view all the text in this field.

Bit Swap

Use the down arrow to select true or false to set or turn off bit swapping. Bit swapping can maximize error performance by attempting to maintain an acceptable margin for each bin by equalizing the margin across all bins through bit reallocation.

Bit Swap Margin From (in dB)

Enter an appropriate value from the range of 1 to 9. The ATU-C marks a bin as a "from" bin if the bin margin falls below a specified target value, and the difference between the margin and target exceeds a specified threshold value.

If you set this value too low, the ATU-C may frequently toggle the bit allocation on bins. If impulse noise is present, the frequent toggling of bit allocation can cause errors. If you set this value too high, the ATU-C may not identify an adequate number of bins from which it can swap bits. This situation decreases the ability of the ATU-C to equalize the margin across all bins.

Bit Swap Margin To (in dB)

Enter an appropriate value from the range of 1 to 9. The ATU-C marks a bin as a "to" bin if the bin margin exceeds a specified target value and the difference between the margin and target exceeds a specified threshold value.

If this value is too low, the ATU-C may toggle bit allocation on bins frequently. If impulse noise is present, the frequent toggling of bit allocation can cause errors. If this value is too high, the ATU-C may not identify an adequate number of bins to which it can swap bits, which decreases the ability of the ATU-C to equalize the margin across all bins.

Training Mode

Use the down arrow to select fast or standard training. Displays the mode employed by the downstream device and upstream device when the devices are training against each other. One of two training modes can be used. The default training mode for ADSL modems is standard.

Trellis Coding

Use the down arrow to select enable or disable to set whether trellis coding is used on the DMT line.

Operating Mode

Use the down arrow to select which line-operating mode the ADSL line will use. An ADSL line uses of one of two operating modes—automatic or splitterless.

Overhead Framing

Use the down arrow to set the negotiated overhead framing structure that the downstream device and upstream device use. Select from the following modes:

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.

Check Bytes (in bytes)

Use the down arrow to specify the initial number of FEC redundancy bytes that the downstream and upstream device frames are transmitting over the interleaved channel during the training sequence. The downstream device can fall back from this value depending on the aggregate data rate achieved during training. The value of this object must be an integral multiple of the value displayed in the Codeword Size field. Valid choices include—0, 2, 4, 6, 8, 10, 12, 14, and 16.

Codeword Size (in symbols)

Use the down arrow to select the number of symbols per codeword that the downstream and upstream messages are using on an interleaved channel during the training sequence. The downstream can fall back from this value, based on the aggregate data rate achieved during training. Valid choices include—0, 1, 2, 4, 8, and 16.

Applying an ADSL Profile to a DMT Interface

After you create an ADSL profile, you can apply that profile to an ADSL (DMT) interface. One ADSL profile can be applied to multiple ADSL (DMT) interfaces on a card.

When you deploy a DMT line card, the software automatically creates four DMT interfaces. These "DMT" interfaces are actually ATM over ADSL over DMT interfaces, which means that this one interface supports these three technologies.

Note ADSL profiles are saved and stored in CDM.

To view the ADSL Interface Configuration window and apply an ADSL profile to a DMT interface, complete these steps:

Step 1 From the left side of the Map Viewer window, within the CDM Manager view, right-click a DMT line card to access the object menu.

Step 2 Choose Cisco DSL Manager > Physical > Interface > ADSL > Configuration from the object menu.

The ADSL Interface Configuration window opens, which is shown in Figure 4-10. This window has one tab, the Configuration tab.

Figure 4-10: ADSL Interface Configuration Window

Step 3 From the list box on the left side of the window, select the chassis, card, and ADSL (DMT) interface to which you want to apply the ADSL profile.

Any current ADSL profiles that are applied to the selected DMT interface appear on the right side of the window.

Step 4 From the menu bar, choose Edit > Apply Profile to display a list of ADSL profiles.

Step 5 Click the named ADSL profile that you want to apply.

The ADSL Interface Configuration tab contains three areas—Profile Details, ADSL Parameters, and Actions. The fields that display on these areas are as follows:

The Target Signal/Noise Margin (tenth dB) field displays the noise margin that the modem must achieve with a BER of 10^-7 or better to successfully complete initialization.
- If the noise margin is above this level, the modem should attempt to reduce its power output to optimize its operation.
- If the noise margin falls below this level, the modem attempts to increase its power output.
- If the increase is not possible, the modem attempts to reinitialize or shut down.

Note Configured allocation ratios of excess transmit bandwidth between fast and interleaved channels only apply when two-channel mode and RADSL are supported.

The Interleave Channel Delay (ms) displays the interleave delay setting for this channel. Interleave delay applies only to the interleave channel and defines the mapping, or relative spacing, that is between subsequent input bytes at the interleaver input and the placement of the input bytes in the bit stream at the interleaver output.
The Interleave Minimum Transmit Rate (bps) field displays the value for the configured minimum transmit rate for Interleave channels, in bits per second.
The Interleave Maximum Transmit Rate (bps) displays the value for the configured maximum transmit rate for Interleave channels, in bits per second.

Creating PVCs and SPVCs

A PVC is a permanent logical connection that must be configured from source to destination. PVCs save bandwidth that is associated with establishing a channel when a virtual channel must exist all the time. You can deploy a PVC or SPVC (which creates the PVC/SPVC within Cisco EMF), apply an ATM traffic descriptor to the PVC or SPVC, and then create the connection on the device. Deploying and creating a PVC creates a cross connection within one device; deploying and creating an SPVC creates a connection between the incoming port on one device and the outgoing port on another device.

Note After you create a PVC or an SPVC, you can only view the channel within the Component Managed view. The channel does not appear in the CDM Manager view.

To view the Deployment Wizard window and create a PVC or SPVC, follow these steps:

Step 1 From the left side of the Map Viewer window, within the CDM Manager view, right-click a DMT line card to access the object menu.

Step 2 Choose Deployment > Deploy ATM Connection > PVC (or SPVC) from the object menu.

The Deployment Wizard—Object Parameters window opens, which is shown in Figure 4-11.

Figure 4-11: Deployment Wizard—Object Parameters Window

Step 3 Enter the number of PVCs or SPVCs you want to create, and then click Forward.

The Deployment Wizard—Object Parameters window opens, which is shown in Figure 4-12.

Figure 4-12: Deployment Wizard—Object Parameters Window

Step 4 Enter the PVC name.

Ensure that the name you choose is unique.

Step 5 Enter your subscriber ID if you want to set one, or you can leave the value undefined.

Step 6 Click Forward.

The Deployment Wizard—Views window opens, which is shown in Figure 4-13.

Figure 4-13: Deployment Wizard—Views Window

Step 7 Click the first Select button to specify an incoming port for the PVC or SPVC.

Step 8 For a PVC or SPVC, select a DMT interface for the incoming port as follows:

a. Click your selection to highlight it.

b. Click Apply.

Your selection populates both fields. However, you must use a different selection for your outgoing port.

Note If you are creating an SPVC with a nonCDM end point, you must make only one selection on this window for the incoming port. A dialog box opens that prompts you to enter an network service access point (NSAP) address for the outgoing port.

Step 9 Click the second Select button to specify an outgoing port.

Step 10 If you are creating a PVC, select an OC-3 or DS3 interface on the NI-2 management card for the outgoing port. If you are creating an SPVC, select the destination ATM end point for the connection.

a. Click your selection to highlight it.

b. Click Apply.

c. Make sure that both of your selections are appropriate.

d. Click Forward.

The Deployment Wizard—Summary window opens, which is shown in Figure 4-14.

Note If you do not select the correct ports in this window, your PVC or SPVC deployment fails.

Figure 4-14: Deployment Wizard—Summary Window

Step 11 Click Finish to complete the deployment.

The Deployment Wizard—Summary window, which is shown in Figure 4-14, summarizes your deployment. When you create a PVC or SPVC, the software also creates two virtual channel links (VCLs) that represent the two incoming and outgoing end points.

Note If you are creating an SPVC with a nonCDM end point, the software creates only one VCL.

You can configure and view status and performance for these VCLs, which is described in the "Managing VCLs" section.

Note If you deploy a PVC or SPVC, doing this does not create the connection on the device.

Applying an ATM QoS Profile to a PVC or SPVC

After you create the PVC or SPVC, you can apply the ATM QoS profile that you have already created to the PVC or SPVC. To view the ATM Connection QoS Configuration window and apply an ATM QoS profile, complete the following steps:

Step 1 From the left side of the Map Viewer window, within the CDM Manager view, right-click a chassis object to access the object menu.

Step 2 Choose Cisco DSL Manager > Logical > Connection > QoS Management from the object menu.

The ATM Connection QoS Configuration window opens to the Profile tab, which is shown in Figure 4-15.

Figure 4-15: ATM Connection QoS Configuration Window—Profile Tab

Step 3 From the list box on the left side of the window, select the related chassis, card, interface, and connection (PVC or SPVC).

This connection should be the PVC or SPVC to which you want to apply the ATM QoS profile. Any current ATM QoS profile that is applied to the selected PVC or SPVC displays on the right side of the window.

Step 4 From the menu bar, choose Edit > Apply Profile.

A list of ATM QoS profiles appears.

Step 5 Click the named ATM QoS profile that you want to apply.

After you apply the profile, a status line displays briefly in the lower left corner of the window that indicates whether the profile is applied successfully. The information for the selected new profile displays on the right side of the window.

Activating the PVC or SPVC

After you create a PVC or SPVC and apply an ATM QoS profile to the PVC or SPVC, you must create the PVC or SPVC on the device to activate the connection. Complete these steps to activate the connection:

Step 1 From the left side of the Map Viewer window, within the CDM Manager view, right-click the appropriate chassis object to access its object menu.

Step 2 Choose Cisco DSL Manager > Logical > Connection > Cross Connection Management from the object menu.

The ATM Connections Management window opens, which is shown in Figure 4-16. The ATM Connections Management window has one tab, the Configuration tab.

Figure 4-16: ATM Connections Management

Step 3 From the left side of the window, select the related chassis, card, interface, and connection that you want to create.

Step 4 On the Configuration tab, enter the desired information in the Subscriber Info, Source, and Destination areas.

See Table 4-3 for descriptions of the fields on this tab.

Note If you are creating an SPVC, the NSAP Address for the outgoing port also displays.

Step 5 Click the Connect button in the Action area.

You are prompted to confirm this action. The Connect button creates the subscriber connection on the device. The connection object changes to the Normal state.

Step 6 If you want to disconnect the subscriber connection, click the Disconnect button.

In the second Actions area, you can click the Decommission button, which suspends management of the connection. When you decommission a connection, alarms are no longer reported against this connection and performance polling is no longer performed on the connection.

Table 4-3 contains information about the parameters in the Subscriber Info, Source, and Destination areas of the Configuration Tab.

Table 4-3: ATM Connections Management—Configuration Tab Parameter Definitions

Parameter Definition

Subscriber ID

Enter the subscriber ID.

Source VPI

VPI value of the source VCL.

Source VCI

VCI value of the source VCL.

Auto Allocation

The source VPI and source VCI values are provided automatically if you select the Auto Allocation button on each side (Source and Destination.)

The Source Port button displays the ATM Configuration window for the selected PVC or SPVC. The Source VCL button displays the VCL Configuration window for the selected PVC or SPVC. These buttons allow you to view or perform more detailed configuration on both VCLs.

Destination VPI

VPI value of the destination VCL.

Destination VCI

VCI value of the destination VCL.

Auto Allocation

The source VPI and source VCI values are provided automatically if you select the Auto Allocation button on each side (Source and Destination.)

NSAP Address

The ATM address that you must provide if you are configuring an SPVC. When your configuration includes a subtended chassis, you must provide the NSAP address for the destination ATM end point of the connection.

Note This field is only applicable to SPVCs, not PVCs.

Clicking the Destination Port button displays the ATM Configuration window for the selected PVC or SPVC. Clicking the Destination VCL button displays the VCL Configuration window for the selected PVC or SPVC. Clicking these buttons allows you to view and perform more detailed configuration on both VCLs.

Managing VCLs

When you create a PVC or SPVC, the software automatically creates two VCLs. One VCL represents the source or incoming port, and the other VCL represents the destination or outgoing port. You can view or modify the configuration, performance, and status of VCLs through the VCL Management windows, which is described in the following sections.

Configuring a VCL

To open the VCL Management window and configure a VCL, complete these steps:

Step 1 From the left side of the Map Viewer window, within the CDM Manager view, right-click a chassis object to access the object menu.

Step 2 Choose Cisco DSL Manager > Logical > Connection > VCL Management > Configuration from the object menu.

The ATM VCL Configuration window opens to the Configuration tab, as shown in Figure 4-17.

Figure 4-17: ATM VCL Configuration Window—Configuration Tab

Step 3 From the list box on the left side of the window, select a VCL.

The Configuration tab contains four areas:

VCL Parameters
Traffic Information
Encapsulation Parameters
OAM Information

Step 4 Configure the values for the VCL that you have selected as follows:

In the VPI/VCI area

a. In the VPI field, enter VPI values for either the source VCL or the destination VCL, depending upon the type of VCL that you select.

b. In the VCI field, enter the VCI values for either the source VCL or the destination VCL, depending upon the type of VCL that you select.

In the Traffic Information area

c. In the UPC Mode field, use the down arrow to select pass, tag, drop, or local shaping for the Usage Parameter Control Mode on the established connection.

d. In the EPD Mode field, use the down arrow to select enable or disable, to enable or disable early packet discard at this specific connection.

In the Encapsulation Parameters area

e. In the Encapsulation Protocol field, use the down arrow to specify the Protocol for terminating VC if Encapsulation Flag is aal5Mux.

Valid choices include

other
ip
xns
appletalk
clns
decnet
novell
apollo
vines

f. In the Encapsulation Flag field, use the down arrow to specify the encapsulation type for terminating VC.

Valid choice include

aal5Snap
aal5Nlpid
aal5FrNlpid
aal5Mux
aal34Smds
aalQsAal
aal5Ilmi
aal5Lane
aal5Pnni

g. In the AAL User Type field, use the down arrow to specify the user types if the Encapsulation flag is aal5Lane.

Valid options include

boxConfigure—Shared Server/Client end of a Configure VCC.
busForward—BUS end of the Data Forward VCC.
busSend—BUS end of the Data Send VCC.
clientConfigure—LE Client end of the Configure Direct VCC.
clientData—One end of the Data Direct VCC.
clientDirect—LE Client end of the Control Direct VCC.
clientDistribute—LE Client end of the Control Distribute VCC.
clientForward—LE Client end of the Multicast Forward VCC.
clientSend—LE Client end of the Multicast Send VCC.
configure—Config Server end of any Configure VCC.
serverConfigure—LE Server end of the Configure VCC.
serverDirect—LE Server end of the Control Direct VCC.
serverDistribute—LE Server end of the Control Distribute VCC.

In the operation, administration, and maintenance (OAM) cell Information area

h. In the AIS Mode field, use the down arrow to select enable or disable.

: This field enables or disables the Enable Alarm Indication Signal OAM cell generation if the interface fails when cross-connecting virtual channel.

i. In the RDI Mode field, use the down arrow to select enable or disable.

: This fields enables or disables the Enable Remote Defect Indication (RDI) OAM cell generation. In ATM, if the physical layer detects loss of signal or cell synchronization, RDI cells report a VPC/VCC failure. RDI cells are sent upstream by a VPC/VCC end point to notify the source VPC/VCC end point of the downstream failure.

Step 5 Click Save in the toolbar to save your configuration settings.

The configuration information for the selected VCL appears on the right side of the window. You can view or modify this information.

Note The ATM VCL Configuration window Layer 3 Configuration tab is dimmed; this tab is nonfunctional in this release of CDM.

ATM VCL Performance

Within the VCL Performance window, you can start performance logging for a selected connection to gather performance data for that connection. You can view this performance data by using the Performance menu or in the Performance Manager window.

Complete the following steps to view ATM VCL performance:

Step 1 From the left side of the Map Viewer window, within the CDM Manager view, right-click the appropriate chassis object to access the object menu.

Step 2 Choose Cisco DSL Manager > Logical > Connection > VCL Management > Performance from the object menu.

The ATM VCL Performance window opens, which is shown in Figure 4-18. The ATM VCL Performance window has one tab, the Performance tab.

Figure 4-18: ATM VCL Performance Window—Performance Tab

Step 3 From the list box on the left side of the window, select the Chassis and Module name for which you want to view ATM VCL performance.

Step 4 Click Start to begin performance polling on the selected VCL.

The Performance tab contains three areas:

Bandwidth Utilization
VC Statistics
Performance Monitoring

The fields on this tab are described in Table 4-4.

Table 4-4: ATM VCL Performance Window—Performance Tab Field Descriptions

Field Description

Receive

Percentage of available bandwidth used when receiving information on the connection

Transmit

Percentage of available bandwidth used when transmitting information on the connection

In Cells

Total number of cells received on this VCL

Out Cells

Total number of cells transmitted on this VCL

UPC Violations

Total number UPC Violations on this VCL

Packets In

Total number of packets received on this VCL

Cell Drops

Total number of cells dropped on this VCL

Packet Drops

Total number of packets dropped on this VCL

Field	Description
Receive	Percentage of available bandwidth used when receiving information on the connection
Transmit	Percentage of available bandwidth used when transmitting information on the connection
In Cells	Total number of cells received on this VCL
Out Cells	Total number of cells transmitted on this VCL
UPC Violations	Total number UPC Violations on this VCL
Packets In	Total number of packets received on this VCL
Cell Drops	Total number of cells dropped on this VCL
Packet Drops	Total number of packets dropped on this VCL

The Performance Monitoring area contains one button, Start. Click Start to begin Performance Polling on the selected VCL. Performance polling collects and displays data on the object, either in the Performance windows or the Performance Manager (refer to "Viewing Current and Historical Performance Data," and "Viewing Historical Performance Data," for further details.

Viewing VCL Status

To view VCL status, follow these steps:

Step 1 From the left side of the Map Viewer window, within the CDM Manager view, right-click the appropriate chassis object to access the object menu.

Step 2 Choose Cisco DSL Manager > Logical > Connection > VCL Management > Status from the object menu.

The ATM VCL Status window opens, which is shown in Figure 4-19.The ATM VCL Status window has one tab, the Status tab.

Figure 4-19: ATM VCL Status Window—Status Tab

Step 3 From the list box on the left side of the window, select a VCL.

The status information for the selected VCL appears in the tab on the right.

The Status tab contains four areas:

VCL Status
Characteristics
Soft PVC Details
OAM Details

Table 4-5 provides descriptions of the fields in this window.

Table 4-5: ATM VCL Status Window—Status Tab Field Descriptions

Field Description

Operational State

Status of the VCL connection

Last Change

Time elapsed since the last status change

Install Time

Time elapsed since the last installation

Span Type

VCL span type

Connection Type

Virtual connection configuration type

Cast Type

Virtual connection cast type

Location

Indicates the calling or called side of a SPVC

Number of Attempts

Indicates the number of retries made to install this SPVC

Last Release Cause

Indicates the cause of the last connection release

Segment Loopback

Indicates whether the segment loopback is enabled or disable on the virtual channel selected

Loopback Interval

Indicates the frequency with which the OAM loopback cells are generated

Field	Description
Operational State	Status of the VCL connection
Last Change	Time elapsed since the last status change
Install Time	Time elapsed since the last installation
Span Type	VCL span type
Connection Type	Virtual connection configuration type
Cast Type	Virtual connection cast type
Location	Indicates the calling or called side of a SPVC
Number of Attempts	Indicates the number of retries made to install this SPVC
Last Release Cause	Indicates the cause of the last connection release
Segment Loopback	Indicates whether the segment loopback is enabled or disable on the virtual channel selected
Loopback Interval	Indicates the frequency with which the OAM loopback cells are generated

Using Inverse Multiplexing

You can use inverse multiplexing over ATM (IMA) to join together several slower speed links to create a virtual high-speed link. The following sections include an overview of IMA and how to move IMA links in CDM.

Overview of IMA

IMA provides access to ATM networks by combining the bandwidth of multiple DS1/E1 links into groups that collectively provide higher intermediate rates. In CDM, an IMA group can have up to 4 T1 links, and each link provides 1.544 Mbps.

IMA breaks up the ATM cell stream and distributes the cells over the multiple physical links of an IMA group, and then recombines the cells into a single stream at the other end of the connection. The ATM cells are distributed in a round robin fashion over the physical links of the IMA group, demultiplexed at the receiving IMA group, and passed in their original form to the ATM layer (see Figure 4-20). Using the multiple links of an IMA group increases the logical link bandwidth to approximately the sum of the individual link rates.

Figure 4-20: Inverse Multiplexing and Demultiplexing of ATM Cells Through IMA Groups

The T1 and E1 IMA port adapters have eight ports. You can use the eight ports on the T1 and E1 IMA port adapters as independent ATM links or in the IMA mode. Example combinations are as follows:

Four IMA groups
Three IMA groups and one independent ATM link
Two IMA groups and two independent ATM links
One IMA group and three independent ATM links
No IMA group and four independent ATM links

The T1 (1.544 Mbps) and E1 (2.048 Mbps) IMA port adapters provide trunk connectivity and are used for intercampus or wide-area links. The T1 and E1 IMA port adapters support unshielded twisted-pair connectors.

Configuring IMA Links

When you first commission a Cisco 6015 DSLAM, CDM creates an IMA hierarchy on the left side of the Map Viewer window. An example of the IMA hierarchy view is shown in Figure 4-21.

Figure 4-21: IMA Hierarchy View

CDM also displays four IMA groups in the hierarchy view, and eight IMA links.

Note You must move IMA links from within the IMA hierarchy view. Do not attempt to move IMA links from any other hierarchy view.

From CDM, you can move IMA links as follows:

You can move a link from one group to another group.
You can move a link that is under the NI-2 card to a group.
You can move a link that is in a group to under an NI-2 card.

Caution CDM allows you to move links from one chassis to another on the GUI. Be careful when you are moving links that you move links within the same DSLAM.

Complete the following steps to move IMA links:

Step 1 From the left side of the Map Viewer window, from within the IMA hierarchy view, right-click the IMA link that you want to move to access the object menu.

Step 2 Choose View Manipulate > Reparent Objects.

Note When moving links, you want to choose only Reparent Objects from the View Manipulate menu choices.

The Select a Parent window, which is shown in Figure 4-22, opens.

Figure 4-22: Select a Parent Window

Step 3 Click the group or NI-2 card name to which you want to move this link.

Step 4 Click Apply.

The IMA link that you moved now displays below the group or below the NI-2 card to which you moved it under the IMA hierarchy view.

Note If you accidentally move an IMA link from one chassis to another, or you move an IMA link from within a hierarchy view other than the IMA view, you must correct this mistake yourself by moving the link back to the correct chassis. CDM does allow you to make this type of movement even though it is incorrect.

Configuring IMA Groups

To configure IMA groups, complete the following steps:

Step 1 From the left side of the Map Viewer window, from within the IMA hierarchy view, right-click the IMA group whose configuration you want to edit.

Step 2 Choose Cisco DSL Manager > Physical > Interface > IMA Group > Configuration from the object menu.

The IMA Group Configuration window, which is shown in Figure 4-23, opens.

Figure 4-23: IMA Group Configuration Window

The left side list box displays the IMA group whose configuration you want to change.

Step 3 Edit the values on this window as needed.

Note The fields on this window are described in Table 4-6.

This window contains the following four areas:

IMA Group Details
IMA Group Configuration
IMA Links
Test Pattern Control

Table 4-6: IMA Group Configuration Window

Field Description

Symmetry

Displays the results of symmetric mode adjustment during IMA group start up.

Transit IMA ID

Displays the IMA link ID.

ICP¹

Displays the current values for the following fields:

Alpha Value

Beta Value

Gamma Value

Frame Length

Use the down arrow to select the transmit frame length from one of the following choices:

m32

m64

m128

m256

Clock Mode

Use the down arrow to select the transmit clock mode.

cfc—common transmit clock

itc—independent transmit clock

Minimum no. of Links

Enter the minimum number of transmit and receive links that are required to be active for the IMA group to be in the operational state. Valid choices range from 1 to 32.

Maximum Differential Delay allowed

Enter the maximum number of milliseconds of differential delay among the links that will be tolerated on this interface. The default value is 25.

Test Link ifindex²

Enter the value to designate an interface as the test link for use in the Test Pattern Procedure. The distinguished value of zero specifies that the implementation may choose the Test Link, in which case the implementation may also choose the value of 'imaGroupTestPattern'. The value zero may also be used if no link has yet been added to the group.

Note This value is not the same as the Tx LID value, but instead either identifies the ifIndex value of the test link to be used by the Test Pattern Procedure (that is, the link whose LID value is inserted in the Tx LID field of the transmitted ICP cells), or identifies that the implementation may choose the test link (if the value is zero).

The default value for this field is 0.

Test Procedure Status

Use the down arrow to select disabled, operating, or linkFail.

Test Pattern

Enter the test pattern to invoke a test pattern object. Test pattern objects are implemented if the IMA implements the test pattern procedure. In this case, all test pattern procedure-related objects must be implemented. Specifically, these objects include:

imaGroupTestLinkIfIndex

imaGroupTestPattern

imaGroupTestProcStatus

imaLinkRxTestPattern

imaLinkTestProcStatus

¹ICP = intelligent cell processing
²ifindex = interface index

Table of Contents

Creating Subscriber Profiles and Setting ATM and IMA Connections