Installation & Operation Manual 206 Document # LTRT-92224
Mediant 8000
26.5.2 Quality of Service
Quality of Service (QoS) features are used in multi-service networks to distribute
available (limited) network resources across multiple applications and to guarantee the
best applicable service to all of them. The Mediant 8000 supports the following QoS
features:
Ethernet frame priority header – as per IEEE 802.1p and 802.1q
Differentiated Services (DiffServ) – as per RFC 2747, 2475 and 3260.
The Mediant 8000 adopts commonly-used classification of IP network traffic into
"service classes" as follows:
Table
26-6: Network Service Classes
Service
Class
Description
Tolerance to:
Loss Delay Jitter
Critical Network-to-network device communications within
an administrative domain like heartbeats between
routers/switches.
Not applicable to the Mediant 8000.
Very Low Very Low N/A
Network Communications between network devices within
one administrative domain.
The following Mediant 8000 management
protocols belong to this category: ICMP, DNS,
NTP.
Low Low N/A
Premium Telephony service.
All call control and media traffic sent/received by
the Mediant 8000 belongs to this category.
Very Low Very Low Very
Low
Platinum Used for video conferencing and interactive
gaming.
Not applicable to the Mediant 8000 .
Low Low Low
Gold Used for Voice Streaming, Video on demand
Broadcast TV, Video surveillance.
HTTP streaming traffic, generated by the Mediant
8000, falls under this category.
Med-Low Med-High High
Silver Used for fast response for TCP and HTTP short
lived flows such as Credit card transactions.
Not applicable to the Mediant 8000 .
Low Low-Med N/A
Bronze Used for long-lived TCP, and HTTP flows such as
Non time-critical OAM&P, Email, Instant
Messaging.
The following Mediant 8000 management protocols
belong to this category: SNMP, SSH (CLI), HTTP
(for WEB interface).
Low Med-High N/A
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