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Chapter 30. vMAN (PBN) 8800 Chassis Switch
• ACL Support on page 783
• Secondary Ethertype Support on page 783
• QoS Support on page 784
• Egress Queue Selection on page 784
ACL Support
The NETGEAR 8800 software includes vMAN (PBN) Access Control List (ACL) support for
controlling vMAN frames. vMAN ACLs define a set of match conditions and modifiers that
can be applied to vMAN frames. These conditions allow specific traffic flows to be identified,
and the modifiers allow a translation to be performed on the frames. For example, you can
use vMAN ACLs to modify ingress frame components such as S-COS, S-ethertype, and
SVID before forwarding through an egress port.
Secondary Ethertype Support
Note: This feature is supported only on the platforms listed for this feature
in the license tables in Appendix A, XCM8800 Software Licenses.
The C-tag and S-tag components that are added to all vMAN (PBN) frames (see Figure 98)
include C-ethertype and S-ethertype components that specify an ethertype value for the
customer VLAN and vMAN, respectively. When a VLAN or vMAN frame passes between two
switches, the ethertype is checked for a match. If the ethertype does not match that of the
receiving switch, the frame is discarded.
The default ethertype values are:
• VLAN port (802.1q frames): 0x8100
• Primary vMAN port (802.1ad frames): 0x88A8
• Secondary vMAN port (802.1ad frames): Not configured
The secondary ethertype support feature applies only to vMANs. The ethertype value for
VLAN frames is standard and cannot be changed.
Note: Ensure that the ethertype values are different for vMANs (802.1ad)
on your switch.
If your vMAN transits a third-party device (in other words, a device other than a NETGEAR
8800 device), you must configure the ethertype value on the NETGEAR 8800 device port to
match the ethertype value on the third-party device to which it connects.
The secondary ethertype support feature allows you to define two ethertype values for vMAN
frames and select either of the two values for each port. For example, you can configure