Chapter 2: Overview
Table 2-4. LGB2124A components.
Number | Component | Description | ||
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1 | (1) | Mode button | Switches between what is being displayed by LEDs. | |
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2 | (24) | TP port status LEDs | For details, see Table | |
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3 | (24) | TP port speed LEDs | For details, see Table | |
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4 | (4) SFP port status LEDs | For details, see Table | ||
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5 | Link/Act LED | Lit to show switch is in Link/Act mode. | ||
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6 | System LED | Lit to show switch is in System mode. | ||
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7 | Speed LED | Lit to show switch is in Speed mode. | ||
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8 | (24) | |||
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9 | (4) 100/1G SFP ports | Connect up to two SFP links. | ||
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10 | (1) | AC power socket (on back of unit) | ||
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11 | (1) | Power LED* (on left side of unit) | Lights when power is on. | |
*Not shown in Figure 2-3 or 2-4.
Table 2-5. LGB2124A LED functions.
LED |
| Color | Function | |
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(1) System Power LED | Green | Lit when +3.3 V power is on. | ||
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(20) | LINK/ACT LEDs | Steady green | Lit when connection with remote device is good. | |
Blinking green | Blinks when any traffic is present. | |||
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| Green | Green when TP link is on 1000 Mbps speed | |
(20) | SPD LEDs | Yellow | Yellow when T link is on 10/100 Mbps speed. | |
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| Off | Off when no link is present. | |
1000SX/LX Gigabit fiber | Green |
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port 21, 22, 23, 24 | Yellow |
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(2) LINK/ACT LEDs | Off |
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Green when SFP link is on 1000 Mbps speed Yellow when SFP link is on 100 Mbps speed. Off when no link is present.
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