H3C BX720E, Руководство пользователя, Страница: 7 / 36

3
Category Item Description
Environment
specifications
Temperature
•
Operating temperature: 5°C to 45°C (41°F to 113°F)
•
Storage temperature: –40°C to 70°C (–40°F to 158°F)
Humidity
•
Operating humidity: 8% to 90% (non-condensing)
•
Storage humidity: 5% to 95% (non-condensing)
Altitude
•
Operating altitude: –60 to +5000 m (–196.85 to +16404.20 ft) (The
allowed maximum temperature decreases by 0.33°C(32.59°F) as
the altitude increases by 100 m (328.08 ft) from 900 m (2952.76
ft))
•
Storage altitude: –60 to +5000 m (–196.85 to +16404.20 ft)
Port
This section describes numbering rules, positions, quantity, and other information about the ports of
the switch module.
Port numbering rules
Ports of the switch module are numbered in three dimensions: A, B, and C.
•
A: Indicates the number of the IRF member device. Since the switch module does not have any
IRF by default, the default value of A is 1.
•
B: Indicates an internal or external port. 0 indicates an internal port, and 1 indicates an external
port.
•
C: Indicates the sequence number of the port.
External ports
Figure 3 shows the external ports provided by the switch module. Table 2 describes specific
functions of the external ports.