Chapter 2 Installation
Using the Router LEDs to Check Links
Using the Router LEDs to Check Links
Use the LEDs on the front of the router to check the links between the router and attached Ethernet devices or telephones. Use Table
Table
Power/Link | LEDs to Check | Normal Patterns |
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Power | OK | On |
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To hub, server, PC, | ETHERNET 1, ETHERNET | • ETHERNET 1 is on when the Ethernet is |
or workstation | RXD, and ETHERNET TXD | physically connected. |
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| • ETHERNET RXD blinks when an Ethernet |
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| port receives an Ethernet packet. |
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| • ETHERNET TXD blinks when an Ethernet |
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| port sends an Ethernet packet. |
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To analog | PHONE 1, PHONE 2, | On when telephone or fax machine is in use. |
telephone or fax | PHONE 3, PHONE 41 |
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machine |
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1. You can also pick up the handset and listen for a dial tone.
Use Table
Table
Power/Link | LEDs to Check | Normal Patterns |
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Power | OK | On |
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To hub, server, PC, | ETHERNET 1, 2, 3, or 4; | • ETHERNET LED is on when the Ethernet is |
or workstation | ETHERNET RXD; and | physically connected to the appropriate port. |
| ETHERNET TXD | • RXD LED blinks when an Ethernet port |
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| receives an Ethernet packet. |
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| • TXD LED blinks when an Ethernet port |
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| sends an Ethernet packet. |
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Cisco 827 and SOHO 77 Routers Hardware Installation Guide
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