A-2
Cisco 7401ASR Installation and Configuration Guide
OL-5419-01 B0
AppendixA Specifications
Software Requirements
Software Requirements
The minimum software requirements for the Cisco 7401ASR router are:
•Cisco IOS Release 12.2 DX
•Cisco IOS Release 12.2(1)DD
•Cisco IOS Release 12.2(4)B
•Cisco IOS Release 12.2(9)YE
•To check the minimum software requirments of Cisco IOS software with the hardware installed on
your router, Cisco maintains the Software Advisor tool on Cisco.com. This tool does not verify
whether modules within a system are compatible, but it does provide the minimum IOS requirements
for individual hardware modules or components.
Note Access to this tool is limited to users with Cisco.com login accounts.
AC-input cable 18 AWG6 three-wire cable, with a three-lead IEC-320 receptacle on the
power supply end, and a country-dependent plug on the power source end
DC Power Supply Information
DC-input power 75W maximum configuration
24V DC-input voltage
ratings +24 VDC nominal. Maximum range +20 to +36 VDC
24V DC-input current
ratings Rated for 5A. 3.0A at +24 VDC, 3.75A at +20 VDC (50VA/28 VDC =
1.8A typical draw)
24V DC-input cable 18 AWG recommended minimum, with at least 2 conductors rated for at
least 140oF (60oC)
48V Single and Dual DC Power Supply Information
48V DC-input voltage
rating –48 VDC7 nominal in North America, –60 VDC nominal in some areas of
the European Community. Maximum range is –40.5 to 72 VDC (75 VDC
for 5 mA).
48V DC-input current
rating Rated for 3A. Not to exceed 1.6A max. at –48 VDC. Not to exceed 2.0A
max. at –40.5 VDC (50VA/–54 VDC = 1.0A typical draw)
48V DC-input cable 18 AWG stranded recommended minimum, rated for at least 140oF (60oC)
Temperature 32 to 104oF (0 to 40oC) operating; –4 to 149oF (–20 to 65oC) nonoperating
Humidity 10% to 90% noncondensing
1. Mbps = megabits per second
2. BTU = British thermal units
3. VAC = volts alternating current
4. A = amperes
5. Hz = hertz
6. AWG = American Wire Gauge
7. VDC = volts direct current
TableA-1 Cisco 7401ASR System Specifications (continued)
Description Specification