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The Local Template-Based ATM Provisioning feature enables ATM permanent virtual circuits (PVCs) to be provisioned automatically as needed from a local configuration. ATM PVC autoprovisioning can be configured on a PVC, an ATM PVC range, or a VC class. If a VC class configured with ATM PVC autoprovisioning is assigned to an interface, all the PVCs on that interface will be autoprovisioned; this configuration is sometimes referred to as an infinite range.
Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the Feature Information Table at the end of this document.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
The number of PVCs that can be established on an interface that is configured as an infinite range is limited to the maximum number of VCs that the platform can support.
Autoprovisioned ATM PVCs are not created until there is activity on the virtual path identifier (VPI)/virtual channel identifier (VCI) pair. When the interface is disabled and reenabled using the shutdown and no shutdown commands, autoprovisioned PVCs that are part of a PVC range or infinite range are removed upon shutdown and are not reestablished until the first incoming packet triggers PVC creation. During router reload, autoprovisioned PVCs are created when there is activity on the connection.
The total number of VCs that can be configured on an ATM port adapter is limited by the capacity of the port adapter. In cases of ATM link oversubscription, where a PVC range or infinite range is configured to provision more PVCs than the port adapter allows, the PVCs can be configured with a timeout so that they can be dynamically brought down as needed. When the timeout expires, the idle PVCs are removed, allowing the PVC range or infinite range of PVCs to share system resources.
ATM PVC local autoprovisioning supports the following applications: PPP over ATM, ATM routed bridge encapsulation, and routed RFC 1483.
The Local Template-Based ATM Provisioning feature enables ATM PVCs to be created automatically as needed from a local configuration, making the provisioning of large numbers of digital subscriber line (DSL) subscribers easier, faster, and less prone to error.
A VC class configured with ATM PVC autoprovisioning can be assigned to an ATM interface, an ATM PVC, an ATM PVC range, and an ATM PVC with a range.
Note |
If a VC class that is configured with ATM PVC autoprovisioning is assigned to an ATM interface, all PVCs on the interface will be autoprovisioned. |
To enable ATM PVC local autoprovisioning in a VC class, use the following commands.
ATM PVC local autoprovisioning can also be configured on a PVC by assigning a VC class that has been configured with ATM PVC local autoprovisioning to the PVC.
To enable ATM PVC local autoprovisioning on a PVC, use the following commands.
ATM PVC local autoprovisioning can also be configured on a range by assigning a VC class that has been configured with ATM PVC local autoprovisioning to the range.
To enable ATM PVC autoprovisioning on an ATM PVC range, use the following commands.
ATM PVC local autoprovisioning can also be configured on a PVC within a range by assigning a VC class that has been configured with ATM PVC local autoprovisioning to the PVC.
To enable ATM PVC autoprovisioning on a PVC within an ATM PVC range, use the following commands.
To verify that ATM PVC local autoprovisioning is configured and working correctly, perform the tasks in the following steps:
Step 1 | Enter the show running-config command to verify that the configuration is correct. |
Step 2 | Enter the show atm pvc command. PVCs that have been autoprovisioned will have the value "PVC-A" ("A" stands for automatic) in the Type field. Example:
Router# show atm pvc
VCD / Peak Avg/Min Burst
Interface Name VPI VCI Type Encaps SC Kbps Kbps Cells Sts
5/0.1 117 0 50 PVC-A SNAP UBR 149760 UP
5/0.1 118 0 51 PVC-A SNAP UBR 149760 UP
5/0.1 119 0 52 PVC-A SNAP UBR 149760 UP
|
Step 3 | Enter the show atm pvc command with the vpi/vci arguments to see if ATM PVC local autoprovisioning is configured on a specific PVC. If ATM PVC local autoprovisioning is configured, the text "VC Auto Creation Enabled: local" will appear in the output. Example:
Router# show atm pvc 0/51
ATM5/0.1: VCD: 118, VPI: 0, VCI: 51
UBR, PeakRate: 149760
AAL5-LLC/SNAP, etype:0x0, Flags: 0x20000C20, VCmode: 0x0
OAM frequency: 0 second(s), OAM retry frequency: 1 second(s), OAM retry frequency: 1 second(s)
OAM up retry count: 3, OAM down retry count: 5
OAM Loopback status: OAM Disabled
OAM VC state: Not Managed
ILMI VC state: Not Managed
InARP frequency: 15 minutes(s)
Transmit priority 4
InPkts: 0, OutPkts: 0, InBytes: 0, OutBytes: 0
InPRoc: 0, OutPRoc: 0, Broadcasts: 0
InFast: 0, OutFast: 0, InAS: 0, OutAS: 0
InPktDrops: 0, OutPktDrops: 0
CrcErrors: 0, SarTimeOuts: 0, OverSizedSDUs: 0, LengthViolation: 0, CPIErrors: 0
Out CLP=1 Pkts: 0
OAM cells received: 0
F5 InEndloop: 0, F5 InSegloop: 0, F5 InAIS: 0, F5 InRDI: 0
F4 InEndloop: 0, F4 InSegloop: 0, F4 InAIS: 0, F4 InRDI: 0
OAM cells sent: 0
F5 OutEndloop: 0, F5 OutSegloop: 0, F5 OutRDI: 0
F4 OutEndloop: 0, F4 OutSegloop: 0, F4 OutRDI: 0
OAM cell drops: 0
Status: UP
PPP: Virtual-Access3 from Virtual-Template1
VC Auto Creation Enabled: local
|
To monitor and maintain ATM PVC autoprovisioning, use one or more of the following commands.
In the following example, local autoprovisioning is enabled on all PVCs on ATM interface 5/0:
vc-class atm auto-pppoe vbr-nrt 1000 100 protocol pppoe create on-demand idle-timeout 300 10 ! interface atm 5/0 class-int auto-pppoe atm autovc retry 10
The following example shows the configuration of local autoprovisioning on a PVC:
interface atm 5/0 pvc 1/300 create on-demand idle-timeout 300 10
The following example shows the configuration of local autoprovisioning on an ATM PVC range called "auto":
interface atm 5/0 range auto pvc 0/100 1/200 create on-demand
The following example shows the configuration of local autoprovisioning on a PVC within a PVC range:
interface atm 5/0 range auto pvc 0/100 1/200 pvc-in-range 0/101 create on-demand
Related Topic |
Document Title |
---|---|
Cisco IOS commands |
|
ATM commands |
Cisco IOS Asynchronous Transfer Mode Command Reference |
ATM PVC configuration |
Cisco IOS XE Asynchronous Transfer Mode Configuration Guide |
Standard |
Title |
---|---|
None |
-- |
MIB |
MIBs Link |
---|---|
None |
To locate and download MIBs for selected platforms, Cisco IOS XE software releases, and feature sets, use Cisco MIB Locator found at the following URL: |
RFC |
Title |
---|---|
RFC 1483 |
Multiprotocol Encapsulation over ATM Adaptation Layer |
Description |
Link |
---|---|
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The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Table 1 | Feature Information for Local Template-Based ATM PVC Provisioning |
Feature Name |
Releases |
Feature Information |
---|---|---|
Local Template-Based ATM PVC Provisioning |
Cisco IOS XE Release 2.5 |
This feature was introduced on Cisco ASR 1000 Series Aggregation Services Routers. The Local Template-Based ATM Provisioning feature enables ATM permanent virtual circuits (PVCs) to be provisioned automatically as needed from a local configuration. The following commands were introduced or modified: atm autovc retry, create on-demand, debug atm autovc, idle-timeout. |
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