Users can configure an ATM-cell Apipe service with a new ATM SAP type. The SAP type refers to a preconfigured ATM connection profile name.
configure service apipe 100 vc-type atm-cell
sap <port-id | aps-id>[:cp.<connection-profile-num>]
The ATM SAP connection profile is configured with the list of discrete VPI/VCI values, as follows:
configure connection-profile 2 {member vpi/vci...(up to 16)}
A connection profile can only be applied to a SAP that is part of an Apipe VLL service of vc-type atm-cell. The ATM SAP can be on a regular port or APS port. A connection profile can be applied to any number of ATM SAPs.
Up to a maximum of 16 discrete VPI/VCI values can be configured in a connection profile. After creation of the connection profile, the user can subsequently add, remove, or modify the VPI/VCI entries. This triggers a re-evaluation of all the ATM SAPs that are currently using that profile.
The user must also override the PW type signaled to type '0x0009 N:1 VCC cell' by using the following command:
configure service apipe signaled-vc-type-override <atm-vcc>
This command is not allowed in an Apipe VLL of vc-type value atm-cell if a configured ATM SAP is not using a connection profile. Conversely, if the signaling override command is enabled, only an ATM SAP with a connection profile assigned is allowed.
The override command is not allowed on an Apipe VLL service of vc-type value other than atm-cell. It is also not allowed on a VLL service with the vc-switching option enabled because signaling of the pseudowire FEC in a Multi-Segment Pseudowire (MS-PW) is controlled by the T-PE nodes. Therefore, for this feature to be used on a MS-PW, configure an Apipe service of vc-type atm-cell at the T-PE nodes with the signaled-vc-type-override command enabled, and configure an Apipe VLL service of vc-type atm-vcc at the S-PE node with the vc-switching option enabled.
The following are the restrictions of this feature:
A SAP-to-SAP VLL service is not supported using ATM SAP with a connection profile assigned. The user must configure each VPI/VCI into a separate SAP and create as many Apipe VLL services of type atm-vcc as required.
An ATM SAP with a connection profile assigned cannot be configured on a port that is part of an MC-APS protection group.
It is strongly recommended to not apply a VCI-based QoS Filter to the ingress of an ATM SAP with a connection profile. Because the filter matches the VCI value of the first cell of a concatenated packet, the entire packet is treated the same way based on the action of the entry of the criteria; all cells of the concatenated packet are mapped to the same FC and profile, based on the VCI value of the first cell.
This feature is supported on the 4-port OC-3/STM-1:OC-12/STM-4 ATM MDA and on the 16-port OC-3/STM-1 ATM MDA.