M120 Internet Router PIC Guide
Cables and connectors | 4-port PIC: |
| ■ Connector: Two-pair, Category 5 unshielded twisted-pair connectivity through an RJ-45 |
| connector |
| ■ Pinout: MDI noncrossover |
| 8-port PIC: |
| ■ Connector: MT-RJ female |
| ■ FX optical interface—see Table 14 on page 59 |
| 12-port PIC: |
| ■ Connector: One very High Density Connector Interface (VHDCI) to RJ-21 cable that |
| connects to an RJ-45 patch panel |
| 48-port PIC: |
| ■ VHDCI to RJ-21 cables that connect to an RJ-45 patch panel |
| ■ Four VHDCI connectors that each service 12 10/100 ports |
| NOTE: Each of the four connectors on a Fast Ethernet 48-port PIC can support a maximum |
| of approximately 800 Mbps. However, this constitutes oversubscription. Use this PIC only in |
| environments that can support this level of oversubscription. |
LEDs | Status LED, one bicolor: |
| ■ Off—PIC ports not enabled |
| ■ Green—PIC is operating normally |
| ■ Red—PIC has an error or failure |
4-port PIC—One pair of port LEDs:
■Link LED—If green, the port is online; if there is no light, the port is down
■RX LED—If flashing green, the port is receiving data; if there is no light, the port might be on but is not receiving data
8-port PIC—one pair of port LEDs per port:
■Port link LED—If green, the port is online; if there is no light, the port is down
NOTE: The Link LED remains lit on the 8-port PIC when the port is down.
■Port RX LED—If flashing green, the port is receiving data; if there is no light, the port might be on, but is not receiving data
12-port PIC—one port LED per port:
■Green—100-Mbps link established
■Flashing green—100-Mbps activity
■Yellow—10-Mbps link established
■Flashing yellow—10-Mbps activity
■Off—No link present
NOTE: The port LEDs remains lit on the 12-port PIC when the ports are down.
