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The 802.1D standard specifies eight distinct levels of
priority (0 to 7), each of which relates to a particular
type of traffic. The priority levels and their traffic types
are shown in
Table
Table 3 Priority Levels for Traffic Types
Priority Level
Traffic Type
0
Best effort
1
Background
2
Standard (spare)
3
Excellent effort (business critical)
4
Controlled load (streaming multimedia)
5
Video (interactive media), less than 100
milliseconds latency and jitter
6
Voice (interactive voice), less than 10
milliseconds latency and jitter
7
Network control reserved traffic
The traffic prioritization feature supported by the
Switch is compatible with the relevant sections of the
IEEE 802.1D standard (incorporating IEEE 802.1p).
Physical Features
Figure 1
shows the front and rear panels of the
Switch. The numbers in this diagram refer to num-
bered sections in
"Front Panel"
Panel"
on
page
12.
3.
on
page 9
and
Figure 1 Front and Rear Panels
1
9
Front Panel
The front panel of the Switch contains a series of indi-
cator lights (LEDs) that help describe the state of vari-
ous networking and connection operations.
(1) PoE LEDs
These LEDs show whether individual ports are provid-
ing power
Status
Green
Off
(2) 24 RJ-45 Ports
WARNING: RJ-45 Ports. These are shielded RJ-45
"Rear
data sockets. They cannot be used as standard tradi-
tional telephone sockets, or to connect the unit to a
traditional PBX or public telephone network. Only
connect RJ-45 data connectors, network telephony
systems, or network telephones to these sockets.
Physical Features
2
3
5
10
.
Meaning
Power is being delivered
No power is being delivered
9
4
6 7
8
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