10/100BASE-T Ethernet Switch High-Speed WAN Interface Cards
Cisco 10/100BASE-T Ethernet Switch HWICs
2
OL-12850-01
Note
Cisco 10/100BASE-T Ethernet switch HWICs can be inserted into HWIC slots only. They are not
designed to fit into WIC/VIC slots.
The Cisco 10/100BASE-T Ethernet switch HWIC provides Layer 2 switching for traffic between one
port on the HWIC and any other port on the same HWIC. The HWIC also supports Layer 3 traffic to and
from the HWIC and any of the other platform interfaces. Traffic between different VLANs on the switch
is routed through the router platform.
Two Cisco 10/100BASE-T Ethernet switch HWICs can be stacked in a router chassis to provide
expanded switching capability. See the
“Stacking of Cisco 10/100BASE-T Ethernet Switch HWICs”
section on page 7
for a detailed description.
Each version of the Cisco 10/100BASE-T Ethernet switch HWIC is capable of providing –48 volts of
inline power through its ports. Inline power is used to provide power to an IP phone or to a wireless
access point attached to a port.
Note
The HWIC-D-9ESW card provides inline power through only eight of its ports, ports 0 through 7. The
ninth port (port 8) is intended to be a stacking port, and as such, does not support inline power.
To provide inline power, an HWIC must be provisioned with an optional daughter card that distributes
inline power. Inline power is provided by a –48 volt power supply within the router. The daughter card
distributes the –48 volt power to the ports of the HWIC.
Note
In order for the HWIC to distribute inline power, the router must be provisioned with an optional –48
volt power supply.
Cisco 10/100BASE-T Ethernet Switch HWIC LEDs
The Cisco 10/100BASE-T Ethernet switch HWIC uses two LEDs per port to indicate link status and
inline power status. See
Figure 109
,
Figure 110
, and
Table 30
for a description of these LEDs.
Figure 109
HWIC-4ESW Faceplate
1
Product name
3
Port number
2
Inline power LED
4
Link LED
95786
HWIC
4ESW
PWR 3x LNK
PWR 2x LNK
PWR 1x LNK
PWR 0x LNK
1
3
2
4
