Qinq Sap Configuration Restrictions For 7210 Sas In Network Mode Only; Table 3: Sap Types In A Service When Qinq Sap Is In Use (Network Mode Operation) - Alcatel-Lucent 7210 SAS M Service Manual

QinQ SAP Configuration restrictions for 7210 SAS in Network
mode only
Listed below are the QinQ access SAP configuration guidelines for 7210 SAS in Network mode
only.
The guidelines listed below are not applicable when the 7210 SAS- M is configured in access
uplink mode and access uplink SAPs are in use.
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Table 3: SAP types in a service when QinQ SAP is in use (Network mode operation)

SAP configured in
QinQ
Q.*
Dotq1 default SAP
0.* QinQ SAP configured in the service will accept only untagged or priority tagged packets,
irrespective of whether a QinQ SAP is configured in the service or not.
7210 SAS M Services Guide
Processing of tagged packets received on SAPs configured in a service in which a QinQ
SAP is also in use (not applicable when a QinQ SAP is not provisioned in a service).
When a QinQ SAP is configured in a service, the number of VLAN tags in the packets
received on NULL SAP, Dot1q SAP and QinQ SAP configured in the same service should
match the number of VLAN tags implied by the port encapsulation mode. Packets that do
not match are dropped by the hardware. I.e. packets received with more than two VLAN
tags on a QinQ SAP are dropped, packets received with more than one VLAN tag on a
Dot1q SAP are dropped and packets received with tags (even packet with a priority tag)
on a NULL SAP are dropped. Henceforth in this document, such packets are referred to as
extra-tag packets.
When a QinQ SAP is configured in a service, the number of VLAN tags in the packets
received on the VC/pseudowire of type 'vc-vlan' should be exactly one and packets
received on the VC/pseudowire of type 'vc-ether' should contain no tags (not even
priority tag). If either case, packets that contain more number of VLAN tags than the
number mentioned above are dropped. Henceforth the document refers to such packets as
extra-tag packets.
The system will provide a limited amount of counters to count the number of extra-tag
packets dropped on SAP ingress. These counters are intended for diagnostic use.
Table 3 displays the SAP types allowed in a service when QinQ SAP is in use:
SAPs Not Allowed for configuration in the same
the service
Q.* SAP, Dot1q Default SAP
Q1.Q2
Q1.Q2
service
Services
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