Owner's Manual

Chapter 15. QoS | 365
NETGEAR 8800 User Manual
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Warning: Port belongs to more than one VR. Port properties
related to diff serv and code replacement will not take
effect.
You do not need to define these traffic groups. You can enable or disable the use of these
traffic groups by enabling or disabling the DiffServ examination feature as described in
Configuring a DiffServ-Based Traffic Group on page 381. You can also configure which
DSCP values map to which queues.
Note: When DiffServ examination is enabled on 1 Gigabit Ethernet ports
for NETGEAR 8800 series switches, 802.1p replacement is enabled
and cannot be disabled. The ingress 802.1p value is replaced with
the 802.1p value assigned to the egress QoS profile.
A related feature is the DiffServ replacement feature, which allows you to configure the
software to replace the DSCP in an ingress frame with a different value in the egress frame.
For more information on DiffServ replacement, see
Configuring 802.1p or DSCP
Replacement on page 374.
Port-Based Traffic Groups
Port-based traffic groups forward traffic to egress QoS profiles based on the incoming port
number. There are no default port-based traffic groups. You must configure each port-based
traffic group.
Note: Port-based traffic groups apply to all packets.
VLAN-Based Traffic Groups
VLAN-based traffic groups forward traffic to egress QoS profiles based on the VLAN
membership of the ingress port. There are no default VLAN-based traffic groups. You must
configure each VLAN-based traffic group.
Note: VLAN-based traffic groups apply to all packets.
Precedence of Traffic Groups
The XCM8800 software allows you to define multiple traffic groups, and you can configure
traffic groups in such a way that multiple traffic groups apply to an ingress frame or packet.
When an ingress frame or packet matches two or more traffic groups, the software chooses