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Cisco 2921 User Manual

Cisco 2921
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22
Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Chapter Basic Router Configuration
Configuring Command-Line Access
DETAILED STEPS
Command Purpose
Step 1
line [aux | console | tty | vty] line-number
Example:
Router(config)# line console 0
Router(config-line)#
Enters line configuration mode, and specifies the
type of line.
This example specifies a console terminal for
access.
Step 2
password password
Example:
Router(config-line)# password 5dr4Hepw3
Router(config-line)#
Specifies a unique password for the console
terminal line.
Step 3
login
Example:
Router(config-line)# login
Router(config-line)#
Enables password checking at terminal session
login.
Step 4
exec-timeout minutes [seconds]
Example:
Router(config-line)# exec-timeout 5 30
Router(config-line)#
Sets the interval that the EXEC command
interpreter waits until user input is detected. The
default is 10 minutes. Optionally, add seconds to
the interval value.
This example shows a timeout of 5 minutes and
30 seconds. Entering a timeout of 0 0 specifies
never to time out.
Step 5
line [aux | console | tty | vty] line-number
Example:
Router(config-line)# line vty 0 4
Router(config-line)#
Specifies a virtual terminal for remote console
access.
Step 6
password password
Example:
Router(config-line)# password aldf2ad1
Router(config-line)#
Specifies a unique password for the virtual
terminal line.
Step 7
login
Example:
Router(config-line)# login
Router(config-line)#
Enables password checking at the virtual terminal
session login.
Step 8
end
Example:
Router(config-line)# end
Router#
Exits line configuration mode, and returns to
privileged EXEC mode.

Table of Contents

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Cisco 2921 Specifications

General IconGeneral
Ethernet LANYes
Cabling technology10/100/1000Base-T(X)
Networking standardsIEEE 802.1Q, IEEE 802.1ag, IEEE 802.3, IEEE 802.3ab, IEEE 802.3af, IEEE 802.3ah, IEEE 802.3u
Ethernet LAN data rates10, 100, 1000 Mbit/s
Ethernet interface typeGigabit Ethernet
Product colorBlack
Rack capacity2U
USB version2.0
RS-232 ports1
USB ports quantity2
Ethernet LAN (RJ-45) ports3
DHCP client-
Routing protocolsBGP, EIGRP, OSPF
Supported protocolsIPv4, IPv6, IS-IS, IGMPv3, PIM SM, SSM, DVMRP, IPSec, GRE, BVD, MPLS, L2TPv3, PPP, MLPPP, MLFR, HDLC, RS-232, RS-449, X.21, V.35, EIA-530, PPPoE, ATM
Firewall securityCisco IOS
Operating altitude0 - 3000 m
Non-operating altitude0 - 4570 m
Storage temperature (T-T)-40 - 70 °C
Operating temperature (T-T)0 - 40 °C
Storage relative humidity (H-H)5 - 95 %
Operating relative humidity (H-H)10 - 85 %
AC input voltage100 - 240 V
Power source typeAC
AC input frequency47 - 63 Hz
SafetyUL 60950-1, CAN/CSA C22.2 No. 60950-1, EN 60950-1, AS/NZS 60950-1, IEC 60950-1
Electromagnetic compatibility47 CFR, ICES-003, EN55022, CISPR22, AS/NZS 3548, VCCI V-3, EN 300-386, EN 61000, EN 55024, CISPR 24EN50082-1
Weight and Dimensions IconWeight and Dimensions
Depth469.9 mm
Width438.2 mm
Height88.9 mm
Weight13200 g

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