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Viptela Documentation

T1/E1 Controller

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Use the T1/E1 Controller template for Cisco IOS XE routers running the SD-WAN software.

To configure the T1/E1 interfaces in a VPN using vManage templates:

  1. Create a T1/E1 Controller template to configure the T1 or E1 network interface module (NIM) parameters, as described in this article.
  2. Create a VPN Interface T1/E1 feature template to configure T1/E1 interface parameters. See the VPN Interface T1/E1 help topic.
  3. Create a VPN feature template to configure VPN parameters. See the VPN help topic.

Navigate to the Template Screen and Name the Template

  1. In vManage NMS, select the Configuration ► Templates screen.
  2. In the Device tab, click Create Template.
  3. From the Create Template drop-down, select From Feature Template.
  4. From the Device Model drop-down, select the type of device for which you are creating the template.
  5. To create a template for VPN 0 or VPN 512:
    1. Click the Transport & Management VPN tab located directly beneath the Description field, or scroll to the Transport & Management VPN section.
    2. Under Additional VPN 0 Templates, located to the right of the screen, click VPN Interface.
    3. From the VPN Interface drop-down, click Create Template. The VPN Interface T1/E1 template form is displayed. The top of the form contains fields for naming the template, and the bottom contains fields for defining VPN Interface Ethernet parameters.
  6. To create a template for VPNs 1 through 511, and 513 through 65530:
    1. Click the Service VPN tab located directly beneath the Description field, or scroll to the Service VPN section.
    2. Click the Service VPN drop-down.
    3. Under Additional VPN templates, located to the right of the screen, click VPN Interface.
    4. From the VPN Interface drop-down, click Create Template. The VPN Interface Ethernet template form is displayed. The top of the form contains fields for naming the template, and the bottom contains fields for defining VPN Interface Ethernet parameters.

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  7. In the Template Name field, enter a name for the template. The name can be up to 128 characters and can contain only alphanumeric characters.
  8. In the Template Description field, enter a description of the template. The description can be up to 2048 characters and can contain only alphanumeric characters.

When you first open a feature template, for each parameter that has a default value, the scope is set to Default (indicated by a check mark), and the default setting or value is shown. To change the default or to enter a value, click the scope drop-down to the left of the parameter field and select one of the following:

Parameter Scope

Scope Description

Device Specific (indicated by a host icon)

Use a device-specific value for the parameter. For device-specific parameters, you cannot enter a value in the feature template. You enter the value when you attach a Viptela device to a device template.

When you click Device Specific, the Enter Key box opens. This box displays a key, which is a unique string that identifies the parameter in a CSV file that you create. This file is an Excel spreadsheet that contains one column for each key. The header row contains the key names (one key per column), and each row after that corresponds to a device and defines the values of the keys for that device. You upload the CSV file when you attach a Viptela device to a device template. For more information, see Create a Template Variables Spreadsheet.

To change the default key, type a new string and move the cursor out of the Enter Key box.

Examples of device-specific parameters are system IP address, hostname, GPS location, and site ID.

Global (indicated by a globe icon)

Enter a value for the parameter, and apply that value to all devices.

Examples of parameters that you might apply globally to a group of devices are DNS server, syslog server, and interface MTUs.

Configure a T1 Controller

To configure a T1 controller, click the T1 radio button and configure the following parameters. Parameters marked with an asterisk are required to configure an interface.

Parameter Name Description
Slot*

Enter the number of the slot in which the T1 NIM is installed.

Range: 0 through 6
Framing*

Enter the T1 frame type:

  • esf—Send T1 frames as extended superframes. This is the default.
  • sf—Send T1 frames as superframes. Superframing is sometimes called D4 framing.
Line Code

Select the line encoding to use to send T1 frames:

  • ami—Use alternate mark inversion (AMI) as the linecode. AMI signaling uses frames grouped into superframes.
  • b8zs—Use bipolar 8-zero substitution as the linecode. This is the default. B8ZS uses frames that are grouping into extended superframes
Clock Source

Select the clock source:

  • internal—Use the controller framer as the clock master.
  • line—Use phase-locked loop (PLL) on the interface. This is the default. When both T1 ports use line clocking and neither port is configured as the primary, by default, port 0 is the primary clock source and port 1 is the secondary clock source.
Line Mode If you choose the Line clock source, select whether the line is a primary or a secondary line.
Description Enter a description for the controller.
Channel Group Enter the number of the channel group. If you do so, you must enter a time slot in the Time Slot field.
Range: 0 through 30
Time Slot Enter the time slot or time slots that are part of the channel group. 
Range: 1 through 24
Cable Length

Select the cable length to configure the attenuation

  • long—Attenuate the pulse from the transmitter using pulse equalization and line buildout. You can configure a long cable length for cables longer that 660 feet.
  • short—Set the transmission attenuation for cables that are 660 feet or shorter.

There is no default length.
Length

If you specify a value in the Cable Length Field, enter the length of the cable.

For short cables, the length values can be:

  • 110—Length from 0 through 110 feet
  • 220—Length from 111 through 220 feet
  • 330—Length from 221 through 330 feet
  • 440—Length from 331 through 440 feet
  • 550—Length from 441 through 550 feet
  • 660—Length from 551 through 660 feet

For long cables, the length values can be:

  • 0 dB
  • –7.5 dB
  • –15 dB
  • –22.5 dB

To save the feature template, click Save.

Configure an E1 Controller

To configure an E1 controller, click the E1 radio button and configure the following parameters. Parameters marked with an asterisk are required to configure an interface.

Parameter Name Description
Slot*

Enter the number of the slot in which the E1 NIM is installed.

Range: 0 through 6
Framing*

Enter the E1 frame type:

  • crc4—Use cyclic redundancy check 4 (CRC4). This is the default.
  • no-crc4—Do no use CRC4.
Line Code*

Select the line encoding to use to send E1 frames:

  • ami—Use alternate mark inversion (AMI) as the linecode.
  • hdb3—Use high-density bipolar 3 as the linecode. This is the default.
Clock Source

Select the clock source:

  • internal—Use the controller framer as the clock master.
  • line—Use phase-locked loop (PLL) on the interface. This is the default.
Line Mode If you choose the Line clock source, select whether the line is a primary or secondary line. If you configure both a primary and a secondary line, if the primary line fails, the PLL automatically switches to the secondary line. When the PLL on the primary line becomes active again, the PLL automatically switches back to the primary line.
Description Enter a description for the controller.
Channel Group To configure the serial WAN on the E1 interface, enter a channel group number.
Range: 0 through 30
Time Slot For a channel group, configure the timeslot.
Range: 1 through 31

To save the feature template, click Save.

Release Information

Introduced in vManage NMS Release 18.1.1.

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