VLL Service Configuration Commands
Page 334 7750 SR OS Services Guide
• Frame Relay-Frame Relay, ATM - ATM
• Ethernet-Ethernet
• cHDLC-cHDLC
• Ethernet SAPs support null, dot1q, and qinq
• An ATM SAP can be part of an IMA bundle.
• A PPP SAP can be part of an MLPPP bundle.
• A FR SAP can be part of a MLFR bundle.
The no form of this command deletes the SAP with the specified port. When a SAP is deleted, all
configuration parameters for the SAP will also be deleted. For Internet Enhanced Service (IES), the
IP interface must be shutdown before the SAP on that interface may be removed.
Default No SAPs are defined.
Special Cases A SAP can be defined with Ethernet ports, SONET/SDH or TDM channels. At most, only one sdp-id
can be bound to an VLL service. Since a VLL is a point-to-point service, it can have, at most, two end
points. The two end points can be one SAP and one SDP or two SAPs. Up to 49 SDPs can be
associated with a service in a single router. Each SDP must have a unique router destination or an
error will be generated.
A default SAP has the following format: port-id:*. This type of SAP is supported only on Ethernet
MDAs and its creation is allowed only in the scope of Layer 2 services (Epipe and VPLS). This type
of SAP is mutually exclusive with a SAP defined by explicit null encapsulation (for example,
1/1/1:0).
Two Frame Relay SAPs cannot be configured on an Apipe service. The limitation is for an Apipe
service in local mode, which has two SAPs associated with the service, as opposed to a configuration
with a SAP and a SDP in remote case, the only combination of the type of SAPs allowed is either two
ATM SAPs or an ATM SAP and a Frame Relay SAP. The CLI prevents adding two Frame Relay
SAPs under an Apipe service.
Parameters sap-id — Specifies the physical port identifier portion of the SAP. See Common CLI Command
Descriptions on page 1933 for command syntax.
port-id — Specifies the physical port ID in the slot/mda/port format.
If the card in the slot has Media Dependent Adapters (MDAs) installed, the port-id must be in the
slot_number/MDA_number/port_number format. For example 6/2/3 specifies port 3 on MDA
2in slot 6.
The port-id must reference a valid port type. When the port-id parameter represents SONET/
SDH and TDM channels, the port ID must include the channel ID. A period “.” separates the
physical port from the channel-id. The port must be configured as an access port.
If the SONET/SDH port is configured as clear-channel then only the port is specified.
endpoint — Adds a SAP endpoint association.
no endpoint — removes the association of a SAP or a spoke-sdp with an explicit endpoint name.
create — Keyword used to create a SAP instance. The create keyword requirement can be enabled/
disabled in the environment>create context.
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