Cisco 3845 Hardware Installation Guide - Page 81
Ethernet LEDs, Fast Ethernet Network Modules, 1-Port Fast Ethernet Modules
UPC - 746320981420
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Chapter 3 Connecting Ethernet, Fast Ethernet, and Token Ring Network Modules Fast Ethernet Network Modules Ethernet LEDs This section describes Ethernet module LEDs. Figure 3-8 shows 4-port Ethernet network module LEDs as an example. All network modules have an enable (EN) LED. This LED indicates that the module has passed its self-tests and is available to the router. Each Ethernet port has two LEDs. The activity (ACT) LED indicates that the router is sending or receiving Ethernet transmissions. The link (LINK) LED indicates that the Ethernet port is receiving the link integrity signal from the hub (10BASE-T only). Figure 3-8 Ethernet Network Module LEDs (Typical) ETHERNET 4E ETH 3 ETH 2 ETH 1 ETH 0 321 0 LINK EN ACT H9254 LEDs Enable LED Fast Ethernet Network Modules Fast Ethernet connections are provided on 1-port Fast Ethernet modules, and on 1-port Fast Ethernet, 2-port Fast Ethernet, and 1-port Fast Ethernet 1-port Token Ring 2-WAN card slot modules. Note The Fast Ethernet-PRI modules described in Chapter 4, "Connecting Fast Ethernet-PRI Network Modules," also provide a Fast Ethernet interface. See that chapter for further information. 1-Port Fast Ethernet Modules The following network modules provide Fast Ethernet interfaces: • 1-port Fast Ethernet network module with TX connector, Cisco product number NM-1FE-TX. (See Figure 3-9.) This module provides an RJ-45 connector for direct connection to 100BASE-T Ethernet networks. • 1-port Fast Ethernet network module with FX connector, Cisco product number NM-1FE-FX. (See Figure 3-10.) This module provides a duplex SC-type fiber-optic port for direct connection to 100BASE-FX Ethernet networks. OL-2485-20 Cisco Network Modules Hardware Installation Guide 3-5
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