Fast Ethernet Port Cabling For The Cisco 3250 And Cisco 3230 Routers - Cisco 3200 Series Hardware Reference Manual
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The Cisco 3230 Router Ethernet port signals are in compliance with IEEE 802.3. The interfaces support
the following:
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Fast Ethernet Port Cabling for the Cisco 3250 and Cisco 3230 Routers
Most Cisco 3200 Series router Ethernet ports support autodetection. If the device that the router is
connected to also supports autodetection, the choice of a straight-through or crossover Ethernet cable
does not matter. However, the Cisco 3250 router MARC FE0X port does not support autodetection.
To connect a port marked MARC FE0X to a routing Ethernet port that does not support autodetection,
use a straight-through Ethernet cable. To connect a MARC FE0X port to a hub, switch, a router hub, or
switch port, use a crossover Ethernet cable.
Table 1-1
Ports
Ports marked FE0X, FE1X,
and so forth
Ports marked FE0, FE1, and
so forth
For example, a port marked FE0X requires a crossover Ethernet cable to establish the Ethernet link
between a Cisco 3250 router and a hub. A port that does not support autodetection marked FE0 requires
a straight-through Ethernet cable to establish the Ethernet link between a Cisco 3250 router and a hub.
For additional information on cable pin assignments, see the "Cable Pinouts" chapter of the Cisco
Content Services Switch Getting Started Guide at:
http://www.cisco.com/en/US/products/hw/contnetw/ps789/products_installation_guide_chapter09186a
00805f718d.html
Cisco 3200 Series Router Hardware Reference
1-16
Autonegotiation and parallel detection MII interface with extended register capability for
10/100BASE-TX connections
Full-duplex and half-duplex modes
3.3V operation low power consumption (300 mW typical)
Low-power sleep mode
10BASE-T or 100BASE-TX using a single Ethernet connection
Robust baseline wander correction performance
Standard carrier signal multiple access collision detect (CSMA/CD) or full-duplex operation
Integrated programmable LED drivers
General Guidelines for MAR Fast Ethernet Port Cabling
Table 1-1
shows the connections.
Server, Workstation, or Personal
Computer Ethernet Link
Straight-through cable
Crossover cable
Chapter 1
Cisco 3200 Rugged Enclosures
Hub, Switch, Uplink Router
Ethernet Hub, or Switch
Crossover cable
Straight-through cable
OL-5816-10
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