Configuring a Dynamic ATM 1483 Subinterface

To configure a dynamic ATM 1483 subinterface:

1. (Optional) Configure profiles containing characteristics for the dynamic upper-interface encapsulation types to be created over the dynamic ATM 1483 subinterface.

   These profiles are referenced in the base profile for the dynamic ATM subinterface as nested profile assignments. For detailed instructions on creating profiles, see Configuring a Dynamic Interface from a Profile in Configuring Dynamic Interfaces.

2. Create the base profile for the dynamic ATM 1483 subinterface by assigning the profile a name.

   host1(config)#profile atm1483BaseProfile

   This command accesses Profile Configuration mode, which enables you to configure attributes in the base profile.

3. Define attributes for the ATM 1483 subinterface in the base profile.
   1. Apply traffic-shaping parameters to the VC range on the ATM AAL5 interface.
   2. Configure the ATM 1483 subinterface for autodetection of the PPP upper-interface encapsulation type.
   3. Configure the ATM 1483 subinterface for autodetection of the IP upper-interface encapsulation type using a nondefault lockout time range of 3600–7200 seconds (1–2 hours).
   4. Configure a subscriber for the IP upper-interface encapsulation type.
   5. Configure a description for ATM 1483 subinterfaces that are created with this base profile.
   6. Set an advisory speed for ATM subinterfaces that are created with this base profile.
   7. Assign a VC class to the bulk-configured VC ranges created on the dynamic ATM 1483 subinterfaces associated with this base profile. You must issue the exit command from Profile Configuration mode for the VC class association to take effect.

      host1(config-profile)#atm pvc aal5autoconfig cbr 10000

      host1(config-profile)#atm atm1483 auto-configure ppp

      host1(config-profile)#atm atm1483 auto-configure ip lockout-time 3600 7200

      host1(config-profile)#atm atm1483 subscriber ip user-prefix joesmith
      domain myisp password-prefix abc123

      host1(config-profile)#atm atm1483 description VC_atm1

      host1(config-profile)#atm atm1483 advisory-rx-speed 2000

      host1(config-profile)#atm class-vc premium-subscriber-class

      host1(config-profile)#exit

4. (Optional) In the base profile, create nested profile assignments for the upper-interface encapsulation types, and include additional profile characteristics for other encapsulation types as needed.

   For example, the following commands configure nested profile assignments for the PPP and IP upper-interface encapsulation types, and define additional attributes for the PPPoE upper-interface encapsulation type.

   host1(config-profile)#atm atm1483 profile ppp myPppProfile

   host1(config-profile)#atm atm1483 profile ip myIpProfile

   host1(config-profile)#pppoe duplicate-protection

   host1(config-profile)#pppoe sessions 3000

5. Exit Profile Configuration mode.
6. Configure the ATM and ATM AAL5 interface.

   host1(config)#interface atm 5/0

7. Configure a range of VCs on the static ATM AAL5 interface, and assign a name to this range. This operation can take several minutes to complete, depending on the number of VCs being configured.

   Note: For information about the maximum number of ATM 1483 bulk configurations supported per chassis, see JUNOSe Release Notes, Appendix A, System Maximums.

   For example, the following command creates a VC range named myBulkConfig made up of two VC subranges that configure a total of 5,000 virtual circuits.

   host1(config-if)#atm bulk-config myBulkConfig vc-range 0 2 101 1100
   vc-range 3 6 201 700

   Note: For information about the maximum number of VCs (sum of the VPI/VCI addresses within all VC subranges) that you can configure with the atm bulk-config command per line module and per chassis, see JUNOSe Release Notes, Appendix A, System Maximums. Do not use any reserved VCI values when configuring VCs with the atm bulk-config command. For information about reserved VCIs, see Configuring F4 OAM in Configuring ATM .

8. Assign the base profile configured for the ATM 1483 subinterface to the VC range configured on the ATM AAL5 interface.

   host1(config-if)#profile atm1483 bulk-config-name myBulkConfig atm1483BaseProfile

9. Configure the ATM AAL5 interface to support autodetection of the ATM 1483 dynamic encapsulation type.

   host1(config-if)#auto-configure atm1483

atm atm1483 advisory-rx-speed

• Use to set an advisory receive speed for ATM 1483 subinterfaces that are created with the profile that you are configuring. This setting has no effect on data forwarding. You can use it to indicate the speed of the client interface. When traffic is tunneled with L2TP, the advisory receive speed is sent from the LAC to the LNS. See LAC Configuration Prerequisites for additional information about the advisory receive speed.
• The range is 0–2147483647 kbps.
• Example

  host1(config-profile)#atm atm1483 advisory-rx-speed 2000

• Use the no version to restore the default behavior—the RX speed is not sent to the LNS.
• See atm atm1483 advisory-rx-speed.

atm atm1483 auto-configure

• Use to specify the types of dynamic upper-interface encapsulations that are accepted or detected by a dynamic ATM 1483 subinterface.
• Include this command in the base profile for a dynamic ATM 1483 subinterface.
• For the bridged Ethernet, IP, PPP, and PPPoE encapsulation types, you can optionally specify the lockout time range for the encapsulation type. For more information, see Encapsulation Type Lockout .
• Examples

  host1(config-profile)#atm atm1483 auto-configure ip lockout-time 3600 7200

  host1(config-profile)#atm atm1483 auto-configure pppoe

• Use the no version to terminate detection of the specified encapsulation type
• See atm atm1483 auto-configure.

atm atm1483 description

• Use to assign a text description for ATM 1483 subinterfaces that are created with the profile that you are configuring.
• The description can be up to 255 characters.
• Example

  host1(config-profile)#atm atm1483 description VC_atm1

• Use the no version to remove the text description.
• See atm atm1483 description.

atm atm1483 profile

• Use to add a nested profile assignment to a base profile for a dynamic ATM 1483 subinterface.
• A nested profile assignment references another profile that configures attributes for a dynamic upper-interface type over the ATM 1483 subinterface.
• Example

  host1(config-profile)#atm atm1483 profile pppoe atm1483ProfilePppoe

• Use the no version to remove the profile assignment for the upper-interface encapsulation type.
• See atm atm1483 profile.

atm atm1483 subscriber

• Use to configure a local subscriber for a dynamic upper-interface encapsulation type configured over a dynamic ATM 1483 subinterface. A subscriber supports authentication and configuration from the RADIUS server.
• Optionally, you can include this command in the base profile for a dynamic ATM 1483 subinterface.
• When you configure a subscriber, you must specify the following:
  • upperInterfaceType—Type of dynamic interface, bridgedEthernet or ip
  • userNameUsage—How the dynamic interface uses the username for authentication purposes
    • user—Use the name as specified.
    • user-prefix—Use the name as a prefix to the interface physical location. The router automatically postpends the physical location of the user to the username string. The username format is userName.slot.port.vpi.vci. The resulting username string is then used to authenticate the subscriber with the RADIUS server.
  • userName—RADIUS username
  • domainName—Domain name
• You can optionally supply password information:
  • passwordUsage—How the dynamic interface uses the password for authentication purposes
    • password—Use the password as specified.
    • password-prefix—Use the password as a prefix to the interface physical location. The router automatically postpends the physical location of the user to the password string. The password format is password.slot.port.vpi.vci. The resulting password string is then used to authenticate the subscriber with the RADIUS server.
  • password—RADIUS password
• If your router is running stateful SRP switchover (high availability), the use of the atm atm1483 subscriber command to configure RADIUS authentication for subscribers on dynamic bridged Ethernet interfaces might suspend stateful SRP switchover on the router or prevent stateful SRP switchover from becoming active. For more information about using the subscriber management application to bypass this limitation, see Authenticating Subscribers on Dynamic Bridged Ethernet over Dynamic ATM Interfaces.
• Example 1

  host1(config-profile)#atm atm1483 subscriber ip user-prefix boston01
  domain myisp password-prefix abc123

• Example 2

  host1(config-subif)#atm atm1483 subscriber bridgedEthernet user westford003
  domain acmecorp.east password xyz123

• Use the no version to remove the subscriber.
• See atm atm1483 subscriber.

atm bulk-config

• Use to create a bulk-configured VC range on a static ATM AAL5 interface for use by a dynamic ATM 1483 subinterface.

  Note: For information about the maximum number of ATM 1483 bulk configurations supported per chassis, see JUNOSe Release Notes, Appendix A, System Maximums.

• Each VC range consists of one or more nonoverlapping VC subranges. A VC subrange is a group of VCs that resides within the VPI and VCI ranges you specify.
• You can configure multiple VC ranges on an ATM AAL5 interface.

  Note: For information about the maximum number of VCs (sum of the VPI/VCI addresses within all VC subranges) that you can configure with the atm bulk-config command per line module and per chassis, see JUNOSe Release Notes, Appendix A, System Maximums. Do not use any reserved VCI values when configuring VCs with the atm bulk-config command. For information about reserved VCIs, see Configuring F4 OAM in Configuring ATM .

• When you create a bulk-configured VC range, you must specify the following:
  • A name of up to 80 alphanumeric characters; this is also referred to as the bulk configuration name
  • The starting and ending VPI values (inclusive) for each VC subrange
  • The starting and ending VCI values (inclusive) for each VC subrange
• You can create a placeholder VC range by issuing the atm bulk-config command without specifying any subranges. You can assign a profile to this placeholder and add subranges to it later.
• You can add and remove individual VC subranges.
• You cannot remove a VC subrange if any dynamic ATM 1483 subinterfaces currently exist for any circuit within the subrange. Use atm bulk-config shutdown to remove dynamic ATM 1483 interfaces created within a subrange.
• Removal of a subrange automatically results in the removal of all overriding profile assignments on that subrange.
• You can create a bulk-configured VC subrange that includes the VPI and VCI addresses belonging to an existing ATM PVC on a static ATM interface.
• You cannot create a bulk-configured VC range on an ATM interface on which you have configured CAC. Conversely, you cannot configure CAC on an ATM interface on which you have created a bulk-configured VC range. For information about configuring CAC, see Setting Optional Parameters in Configuring ATM .
• Example 1—Configures a VC range named myBulkConfig with a single VC subrange containing VPIs 0–2 and VCIs 101–1100; this command configures a total of 3000 VCs

  host1(config-if)#atm bulk-config myBulkConfig vc-range 0 2 101 1100

• Example 2—Configures a VC range named myMultiBulkConfig with two VC subranges containing VPIs 0–1 and VCIs 101–600 (first subrange) and VPIs 3–5 and VCIs 201–3200 (second subrange); this command configures a total of 10,000 VCs

  host1(config-if)#atm bulk-config myMultiBulkConfig vc-range 0 1 101 600 vc-range 3 5 201 3200

• Use the no version to remove the specified VC range from the ATM AAL5 interface, to remove the specified subranges from the specified VC range, or to remove all subranges from the specified VC range. The no version also removes any overriding profile assignments for ATM PVCs within the deleted VC range or VC subrange.
• See atm bulk-config.

atm class-vc

• Use to assign a previously configured VC class to a base profile for a dynamic ATM 1483 subinterface.
• Issuing this command applies the set of attributes in the specified VC class to all bulk-configured VC ranges that are dynamically created from this base profile.
• You must issue the exit command from Profile Configuration mode for the VC class association to take effect.
• Changes to a VC class specified in a base profile apply only to those PVCs that are dynamically created after the change is made. These changes do not apply to dynamic PVCs that were created prior to the VC class modification.
• Example

  host1(config-profile)#atm class-vc gold-subscriber-class

  host1(config-profile)#exit

• Use the no version to remove the VC class association with the base profile.
• See atm class-vc.

atm pvc

• Use to apply encapsulation, traffic-shaping, and OAM parameters to the range of ATM PVCs configured on an ATM AAL5 interface for use by a dynamic ATM 1483 subinterface.
• Include this command in the base profile for a dynamic ATM 1483 subinterface.
• You must specify one of the following encapsulation types:
  • aal5autoconfig—Enables autodetection of the 1483 encapsulation (LLC/SNAP or VC multiplexed)
  • aal5snap—Specifies a logical link control (LLC) encapsulated circuit; the LLC/Subnetwork Access Protocol (LLC/SNAP) header precedes the protocol datagram
  • aal5mux ip—Specifies a VC-based multiplexed circuit used for IP only
• You can optionally set the peak, average, and burst sizes. To use VBR-RT or VBR-NRT as the service type, you must specify each of these options.
• The default service type is UBR. To set a different service type, specify one of the following keywords:
  • rt—Selects VBR-RT as the service type; you can select rt only if you set the peak, average, and burst parameters
  • cbr—Selects CBR as the service type; you must set the CBR rate in Kbps
• You can optionally include the oam keyword and a number of seconds in the range 1–600 to enable generation of OAM F5 loopback cells on this circuit. This option enables VC integrity features that affect the operational state of the ATM PVC.
• Example

  host1(config-profile)#atm pvc aal5autoconfig cbr 10000 oam 120

• Use the no version to restore the default service type, UBR, on the VC range.
• See atm pvc.

auto-configure atm1483

• Use to configure the static ATM AAL5 interface to support autodetection of an ATM 1483 dynamic interface type.
• You must issue this command to enable creation of a dynamic ATM 1483 subinterface.
• Example

  host1(config-if)#auto-configure atm1483

• Use the no version to terminate autodetection of the ATM 1483 encapsulation type.
• See auto-configure atm1483.

interface atm

• Use to select an ATM interface or ATM 1483 subinterface.
• To specify an ATM interface for ERX-7xx models, ERX-14xx models, and ERX-310 routers, use the slot/port.[subinterface ] format.
  • slot—Number of the chassis slot
  • port—Port number on the I/O module
  • subinterface—Number of the subinterface in the range 1–2147483647
• To specify an ATM interface for E120 and E320 routers, use the slot/adapter/port[.subinterface ] format.
  • slot—Number of the chassis slot
  • adapter—Identifier for the IOA within the E320 chassis, either 0 or 1, where:
    • 0 indicates that the IOA is installed in the right IOA bay (E120 router) or the upper IOA bay (E320 router).
    • 1 indicates that the IOA is installed in the left IOA bay (E120 router) or the lower IOA bay (E320 router).
  • port—Port number on the IOA
  • subinterface—Number of the subinterface in the range 1–2147483647
• For more information, see Creating a Basic Configuration in Configuring ATM .
• Examples

  host1(config)#interface atm 5/0.1

  host1(config)#interface atm 5/0/0.1

• Use the no version to remove the interface or subinterface.
• See interface atm.

profile

• Use to create a base profile to configure attributes for a dynamic ATM 1483 subinterface.
• Specify a profile name of up to 80 alphanumeric characters.
• Example

  host1(config)#profile atm1483BaseProfile

• Use the no version to delete the specified profile if it is not being used by any existing VC subranges.

  Note: If VC ranges are configured for the dynamic ATM 1483 subinterface associated with the base profile you want to delete, you must use the no atm bulk-config command to remove the VC ranges before you can use the no profile command to remove the associated base profile.

• See profile.

profile atm1483 bulk-config-name

• Use to assign the base profile configured for a dynamic ATM 1483 subinterface to the VC range configured on a static ATM AAL5 interface.
• You must specify both of the following:
  • Name assigned to the VC range on an ATM AAL5 interface, as specified in the atm bulk-config command
  • Name assigned to the base profile for a dynamic ATM 1483 subinterface
• Example

  host1(config-if)#profile atm1483 bulk-config-name myBulkConfig atm1483BaseProfile

• Use the no version to remove the profile assignment.
• See profile atm1483 bulk-config-name

Copyright © 2008, Juniper Networks, Inc. All rights reserved. Trademark Notice.