Sap Encapsulations; Vlan Range For Saps In An Epipe Service; Processing Behavior For Saps Using Vlan Ranges In Access-Uplink Mode - Alcatel-Lucent 7210 SAS M Service Manual

SAP Encapsulations

The Epipe service is designed to carry Ethernet frame payloads, so it can provide connectivity
between any two SAPs that pass Ethernet frames. The following SAP encapsulations are
supported on the Epipe service:
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•
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Note that while different encapsulation types can be used, encapsulation mismatch can occur if the
encapsulation behavior is not understood by connecting devices and are unable to send and receive
the expected traffic. For example if the encapsulation type on one side of the Epipe is dot1q and
the other is null, tagged traffic received on the null SAP will potentially be double tagged when it
is transmitted out of the Dot1q SAP.

VLAN Range for SAPs in an Epipe Service

7210 SAS VLAN ranges provide a mechanism to group a range of VLAN IDs as a single service
entity. This allows the operator to provide the service treatment (forwarding, ACL, QoS,
Accounting, and others) to the group of VLAN IDs as a whole.
NOTE: Grouping a range of VLAN IDs to a SAP is supported only for Virtual Leased Lines
(VLL) Ethernet services.

Processing behavior for SAPs using VLAN ranges in access-uplink mode

The access SAPs that specifies VLAN range values (using connection-profile) is allowed only in
E-Pipe service. The system allows only one range SAP in an Epipe service. It will fail any attempt
to configure more than one range SAP in an Epipe service. Range SAP can be configured only on
access ports. The other endpoint in the Epipe service has to be a "Q.* SAP" in access-uplink
mode. The processing and forwarding behavior for packets received on range SAPs are listed
below:
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7210 SAS M Services Guide
Ethernet null
Ethernet dot1q
QinQ
No VLAN tags are removed/stripped on ingress of access dot1q SAP configured to use
VLAN ranges. A single tag (Q1) is added to the frame when it is forwarded out of the
Q1.* access-uplink SAP.
When a packet is received on the access-uplink Q1.* SAP, the outermost tag is removed
and the packet is forwarded out of the access dot1q range SAP. The system does not check
Virtual Leased Line Services
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