Port Types
Page 34 7210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration Guide
7210 supports an option to allow the user to use a different dot1q VLAN Ethernet Type (Etype). It
allows for interoperability with third-party switches that use some pre-standard (other than
0x8100) dot1q VLAN etype.
Configuration guidelines for Dot1q-etype
The following are the configuration guidelines for Dot1q-etype configured for dot1q encap port:
• Dot1q-etype configuration is supported for all ports - Access, Hybrid and Network ports.
• Dot1q-preserve SAPs cannot be configured on dot1q encap ports configured to use
ethertype other than 0x8100.
• Priority tagged packet received with etype 0x8100 on a dot1q port configured with etype
0x9100 are classified as priority tagged packet and mapped to a dot1q :0 SAP (if
configured) and the priority tag is removed.
• Priority tagged packets received with etype 0x6666 (any value other than 0x8100) on a
dot1q port configured with etype 0x9100 is classified as null-tagged packet and mapped to
a dot1q :0 SAP (if configured) and the priority tag is retained and forwarded.
• The dot1q-etype is modified only for the dot1q encap port (access/hybrid port). The
dot1q-etype cannot be modified on Network ports.
• During the non-default dot1q-rvpls and qinq-rvpls, the extra tagged packets is dropped
even for an 0x8100 packets on an RVPLS SAP, this is applicable only for network mode
(and not access-uplink mode).
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