Installation & Operation Manual 208 Document # LTRT-92224
Mediant 8000
26.5.2.2 Differentiated Services (DiffServ)
Differentiated Services (DiffServ) is an alternative QoS architecture that is defined in
the following IETF standards:
RFC 2474 – Definition of the Differentiated Services Field (DS Field) in the IPv4
and IPv6 Headers
RFC 2475 – An Architecture for Differentiated Services
RFC 3260 – New Terminology and Clarifications for Diffserv
DiffServ utilizes Differentiated Services Field (DS Field) in the IP header to indicate
the service level of the corresponding IP packet. The Mediant 8000 supports
definition of this DS Field (values from 0 to 63) for each supported network service
class.
The DiffServ Field value may be configured as follows:
For OAM subnet (Network, Gold and Bronze service classes) – open the Media
Gateway’s Network Settings configuration screen and configure parameters in
the Quality Of Service tab.
For Media and Control subnets – open the Network Profile’s configuration screen
and configure parameters in the Quality Of Service tab.
Table 26-7: Media Gateway Quality Of Service Settings
Parameter Name Type Provisioning Type Description
Network Service Class
Priority
Integer
0 – 7
Online
Defines Layer 2 Class Of
Service (as per IEEE
802.1P) for the Network
service class, applied to
DNS, DHCP, ICMP, etc.
Gold Service Class
Priority
Integer
0 – 7
Online Defines Layer 2 Class
Of Service (as per IEEE
802.1P) for the Gold
service class applied to
voice streaming.
Bronze Service Class
Priority
Integer
0 – 7
Online Defines Layer 2 Class
Of Service (as per
Q802.1P) for the Bronze
service class, applied to
the management traffic.
Network Service Class
Diff Serv
Integer
0 – 63
Online Defines Layer 3 Quality
Of Service for Network
service class, applied to
DNS, DHCP, ICMP, etc.
Gold Service Class Diff
Serv
Integer
0 – 63
Online Defines Layer 3 Quality
Of Service for Gold
service class, applied to
voice streaming.
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