Alcatel-Lucent 7750 SR OS Service Manual page 777

match-qinq-dot1p
Syntax match-qinq-dot1p {top | bottom}
no match-qinq-dot1p
Context config>service>ies>if>sap>ingress
config>service>ies>sub-if>grp-if>sap>ingress
Description
This command specifies which Dot1Q tag position Dot1P bits in a QinQ encapsulated packet should
be used to evaluate Dot1P QoS classification.
The match-qinq-dot1p command allows the top or bottom PBits to be used when evaluating the
applied sap-ingress QoS policy's Dot1P entries. The top and bottom keywords specify which
position should be evaluated for QinQ encapsulated packets.
The no form of the command restores the default dot1p evaluation behavior for the SAP.
By default, the bottom most service delineating Dot1Q tags Dot1P bits are used.
default behavior for Dot1P evaluation when the match-qinq-dot1p command is not executed.
Table 1: Default QinQ and TopQ SAP Dot1P Evaluation
Default
no match-qinq-dot1p — No filtering based on p-bits.
top or bottom must be specified to override the default QinQ dot1p behavior.
7750 SR OS Services Guide
Port / SAP Type
Null
Null
Null
Null
Null
Dot1Q
Dot1Q
Dot1Q
QinQ / TopQ
QinQ / TopQ
QinQ / QinQ
Existing Packet Tags
None
Dot1P (VLAN-ID 0)
Dot1Q
TopQ BottomQ
TopQ (No BottomQ)
None (Default SAP)
Dot1P (Default SAP VLAN-ID 0)
Dot1Q
TopQ
TopQ BottomQ
TopQ BottomQ
Internet Enhanced Services
Table 24
PBits Used for Match
None
Dot1P PBits
Dot1Q PBits
TopQ PBits
TopQ PBits
None
Dot1P PBits
Dot1Q PBits
TopQ PBits
TopQ PBits
BottomQ PBits
Page 777
defines the