QinQ Network Interface Support

The creation of network interfaces on a QinQ-encapsulated VLAN can be enabled on a system-wide level using the config>system>ip>allow-qinq-network-interface command. When enabled, the egress IOM limits are changed to allow a maximum of 11 MPLS labels instead of 12.

Table 1 lists the allowed and restricted QinQ combinations.

Table 1. QinQ Combination (✓) and Restriction (x) Table

SAP x.0

SAP x.*

SAP x.y

Nw interface x.0

Nw interface x.*

Nw interface x.y

SAP *.*

SAP *.NULL

SAP 0.*

Inverse SAP

SAP x.0

x

x

x

x

x

SAP x.*

x

x

x

x

x

SAP x.z

x

x

Nw interface x.0

x

x

x

x

x

x

Nw interface x.*

x

x

x

x

x

x

x

Nw interface x.z

x

x

x

x

SAP *.*

x

SAP *.NULL

x

x

SAP 0.*

x

x

Inverse SAP

x

x

x

x

x

x

x

x