Owner's Manual

376 | Chapter 15. QoS
NETGEAR 8800 User Manual
• Replacement in ACL-Based Traffic Groups on page 374
• Replacement in Non-ACL-Based Traffic Groups on page 374
Replacement in ACL-Based Traffic Groups
If you are using ACL-based traffic groups, you can use the replace-dscp action modifier to
replace the ingress DSCP value with the DSCP value of the egress QoS profile as listed in
Table 46.
Note: If you are using ACL-based traffic groups, you must use ACL action
modifiers to replace the DSCP. Traffic that meets any ACL match
conditions is not subject to non-ACL-based DSCP priority
replacement. For all platforms except BlackDiamond 20800 series
switches, NETGEAR recommends that you use ACL-based traffic
groups when configuring DSCP replacement. BlackDiamond 20800
series switches do not support the replace-dscp action modifier.
Replacement in Non-ACL-Based Traffic Groups
For non-ACL-based traffic groups, you can enable or disable DSCP replacement on specific
ingress ports. When DSCP replacement is enabled, the DSCP value used on egress is
determined by either the QoS profile or the 802.1p priority value.
Table 46 shows the default
mappings of QoS profiles and 802.1p priority values to DSCPs.
To replace DSCPs, you must enable DiffServ replacement using the following command:
enable diffserv replacement ports [<port_list> | all]
Table 46. Default QoS Profile and 802.1p Priority Value Mapping to DiffServ Code Points
NETGEAR 8800 Switches QoS Profile 802.1p Priority Value DSCP
QP1 0 0
1 8
2 16
3 24
4 32
5 40
6 48
QP8 7 56