Virtual Private Routed Network Services
7750 SR OS Services Guide Page 1311
Default no match-qinq-dot1p - No filtering based on p-bits.
top or bottom must be specified to override the default QinQ dot1p behavior.
Parameters top — The top parameter is mutually exclusive to the bottom parameter. When the top parameter is
specified, the top most PBits are used (if existing) to match any dot1p dot1p-value entries. The
following table defines the dot1p evaluation behavior when the top parameter is specified.
bottom — The bottom parameter is mutually exclusive to the top parameter. When the bottom
parameter is specified, the bottom most PBits are used (if existing) to match any dot1p dot1p-
value entries. The following tables define the bottom position QinQ and TopQ SAP dot1p
evaluation and the default dot1p explicit marking actions.
Null TopQ BottomQ TopQ PBits
Null TopQ (No BottomQ) TopQ PBits
Dot1Q None (Default SAP) None
Dot1Q Dot1P (Default SAP VLAN-ID 0) Dot1P PBits
Dot1Q Dot1Q Dot1Q PBits
QinQ / TopQ TopQ TopQ PBits
QinQ / TopQ TopQ BottomQ TopQ PBits
QinQ / QinQ TopQ BottomQ BottomQ PBits
Port / SAP Type Existing Packet Tags PBits Used for Match
Port / SAP Type Existing Packet Tags PBits Used for Match
Null None None
Null Dot1P (VLAN-ID 0) Dot1P PBits
Null Dot1Q Dot1Q PBits
Null TopQ BottomQ TopQ PBits
Null TopQ (No BottomQ) TopQ PBits
Dot1Q None (Default SAP) None
Dot1Q Dot1P (Default SAP VLAN-ID 0) Dot1P PBits
Dot1Q Dot1Q Dot1Q PBits
QinQ / TopQ TopQ TopQ PBits
QinQ / TopQ TopQ BottomQ TopQ PBits
QinQ / TopQ TopQ BottomQ TopQ PBits
Table 26: Bottom Position QinQ and TopQ SAP Dot1P Evaluation
Port / SAP Type Existing Packet Tags PBits Used for Match
Null None None