metrotek Bercut-ET, Руководство по эксплуатации

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5.4 RFC 2544. General settings 27
0 priority is reserved for the best transmission and is assigned if none
other class has been specified.
•
MPLS — switch to the Label stack menu.
• Precedence — frame priority field. In accordance with RFC 791 [2],
eight priority values are available. Sender can specify any priority value
from the table 5.2 below.
Table 5.2. Precedence value
Value Description
0 Routine
1 Priority
2 Immediate
3 Flash
4 Flash Override
5 CRITIC/ECP
6 Internetwork Control
7 Network Control
•
ToS (Type of Service) — the field determines type of service for
datagram. The source can set any value from the table 5.3 in accordance
with RFC 1349 [4] methodology.
Table 5.3. ToS field values
Value Description Notes
1000 Minimize delay Use the value if a period of
packet delivery from the
source to destination
(latency period) is the main
priority and must be
minimum.
0100 Maximize throughput Use the value to specify that
the packet must be routed
through the link with the
maximum throughput.
0010 Maximize reliability Use the value to ensure the
packet is delivered without
retransmission.
0001 Minimize monetary cost Use the value to minimize
the monetary cost of the
data delivery.
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