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Connecting Route Processor Cables
Figure 3-15
RJ-45 and MII Ethernet Connections
To repeater
or DTE
RJ-45 cable
To transceiver,
repeater, or DTE
MII cable
Both the MII and RJ-45 receptacles support IEEE 802.3u Ethernet interfaces compliant
with the 100Base-TX and 10Base-T standards. The MII receptacle requires an external
transceiver that permits connection to multimode fiber for 100Base-FX or 100Base-T4
physical media. Only one Ethernet receptacle, either RJ-45 or MII, can be used at a time.
Two LEDs on the GRP faceplate show which Ethernet receptacle is active.
The Ethernet port can use either unshielded twisted-pair or screened twisted-pair
Note
cables. In sites where extremely high immunity to noise is required, screened twisted-pair
cable is recommended.
Depending on the type of media you use between the MII receptacle and your switch or
hub, the network side of your 100-Mbps transceiver should be appropriately equipped with
ST-type connectors (for optical fiber), BNC connectors, and so forth.
Figure 3-16 shows the pin orientation of the female MII receptacle on the Ethernet port.
Installing a Cisco 12012 3-37
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Troubleshooting
