Specifications
This appendix provides cable and technical specifications for the Catalyst 4948 switch.
Console Port
The console port is an RJ-45 receptacle. The Request to Send (RTS) signal tracks the state of the Clear to Send (CTS) input. Table A-1 lists the console port pinouts.
Note
A console cable is not provided in the accessory kit. It can be ordered as an option.
Table A-1 Console Port Pinouts
|
|
|
|
|
1 |
RTS |
output |
request to send |
2 |
DTR |
output |
data terminal ready |
3 |
TXD |
output |
transmit data |
4 |
GND |
|
|
5 |
GND |
|
|
6 |
RXD |
input |
receive data |
7 |
DSR |
input |
data set ready |
8 |
CTS |
input |
clear to send |
10/100BASE-T Management Port
The 10/100BASE-T port is an RJ-45 receptacle with a Link Status LED. Table A-2 lists the 10/100BASE-T port pinouts.
Table A-2 10/100BASE-T Port Pinouts
|
|
|
|
|
1 |
RXDP |
input |
receive data |
2 |
RXDN |
input |
receive data |
3 |
TXDP |
output |
transmit data |
4 |
unused |
|
|
5 |
unused |
|
|
6 |
TXDN |
output |
transmit data |
7 |
unused |
|
|
8 |
unused |
|
|
Catalyst 4948 Switch Specifications
Catalyst 4948 switch specifications are provided in Table A-3 .
Table A-3 Catalyst 4948 Switch Specifications
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|
|
|
|
Temperature
ambient operating |
32°F (0°C) to 104°F (40°C) |
Temperature
ambient nonoperating and storage |
–40 to 167°F (–40 to 75°C) |
Humidity (RH), ambient (noncondensing) operating |
10% to 90% |
Humidity (RH), ambient (noncondensing) nonoperating and storage |
5% to 95% |
Altitude
operating and nonoperating |
–60 to 2000 m |
Switch heat dissipation |
1023 BTU/hour |
|
|
Memory |
256-MB SDRAM, 64-MB Flash (onboard and fixed), 512-KB NVRAM, 256 bytes serial EEROM |
|
|
Dimensions (H x W x D) |
1.75 x 17.5 x 16 in. (4.5 x 44.5 x 40.6 cm) |
Weight |
17 lb (7.8 kg) for a system with two power supplies |
Airflow |
Sides in, rear out |
|
|
Power supply output |
300 W |
System power dissipation |
150 W |
AC-input |
4 A maximum @ 100 VAC
2 A maximum @ 240 VAC |
AC frequency |
50 to 60 Hz |
Output current |
25A max |
Output voltage |
12V |
Input KVA rating |
0.375 KVA |
|
|
Power supply output |
300 W |
System power dissipation |
150 W |
DC-input |
8A @ –48 to –60 VDC |
Output current |
25A max |
Output voltage |
12V |
Input KVA rating |
0.4 KVA |
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