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NETGEAR 7000 Series Managed Switch Administration Guide
9-6 Differentiated Services
v1.1, May 2006
The following example configures DiffServ VoIP support:
Enter Global Config mode. Set queue 5 on all ports to use strict
priority mode. This queue shall be used for all VoIP packets.
Activate DiffServ for the switch.
(Netgear Switch) #config
(Netgear Switch) (Config)#cos-queue strict 5
(Netgear Switch) (Config)#diffserv
Create a DiffServ classifier named 'class_voip' and define a sin-
gle match criterion to detect UDP packets. The class type "match-
all" indicates that all match criteria defined for the class must
be satisfied in order for a packet to be considered a match.
(Netgear Switch) (Config)#class-map match-all class_voip
(Netgear Switch) (Config class-map)#match protocol udp
(Netgear Switch) (Config class-map)#exit
Create a second DiffServ classifier named 'class_ef' and define a
single match criterion to detect a DiffServ code point (DSCP) of
'EF' (expedited forwarding). This handles incoming traffic that
was previously marked as expedited somewhere in the network.
(Netgear Switch) (Config)#class-map match-all class_ef
(Netgear Switch) (Config class-map)#match ip dscp ef
(Netgear Switch) (Config class-map)#exit
Create a DiffServ policy for inbound traffic named 'pol_voip',
then add the previously created classes 'class_ef' and
'class_voip' as instances within this policy.
This policy handles incoming packets already marked with a DSCP
value of 'EF' (per 'class_ef' definition), or marks UDP packets
per the 'class_voip' definition) with a DSCP value of 'EF'. In
each case, the matching packets are assigned internally to use
queue 5 of the egress port to which they are forwarded.
(Netgear Switch) (Config)#policy-map pol_voip in
(Netgear Switch) (Config policy-map)#class class_ef
(Netgear Switch) (Config policy-class-map)#assign-queue 5
(Netgear Switch) (Config policy-class-map)#exit
(Netgear Switch) (Config policy-map)#class class_voip
(Netgear Switch) (Config policy-class-map)#mark ip-dscp ef
(Netgear Switch) (Config policy-class-map)#assign-queue 5
(Netgear Switch) (Config policy-class-map)#exit
(Netgear Switch) (Config policy-map)#exit
Attach the defined policy to an inbound service interface.
(Netgear Switch) (Config)#interface 1/0/2
(Netgear Switch) (Interface 1/0/2)#service-policy in pol_voip
(Netgear Switch) (Interface 1/0/2)#exit
(Netgear Switch) (Config)#exit