Cisco 2901 User Manual

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Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Appendix A Cisco IOS CLI for Initial Configuration
Using the Cisco IOS CLI to Perform Initial Configuration
Examples
The following example shows how to configure virtual terminal lines with a password:
!
line vty 0 4
password guessagain
login
!
What to Do Next
After you configure the vty lines, follow these steps:
• (Optional) To encrypt the virtual terminal line password, see the “Configuring Passwords and
Privileges” chapter in Cisco IOS Security Configuration Guide. Also see the Cisco IOS Password
Encryption Facts tech note.
• (Optional) To secure the VTY lines with an access list, see “Part 3: Traffic Filtering and Firewalls”
in the Cisco IOS Security Configuration Guide.
Configuring the Auxiliary Line
This section describes how to enter line configuration mode for the auxiliary line. How you configure
the auxiliary line depends on your particular implementation of the auxiliary (AUX) port. See the
following documents for information on configuring the auxiliary line:
Configuring a Modem on the AUX Port for EXEC Dialin Connectivity, tech note
http://www.cisco.com/en/US/tech/tk801/tk36/technologies_tech_note09186a0080094bbc.shtml
Configuring Dialout Using a Modem on the AUX Port, sample configuration
http://www.cisco.com/en/US/tech/tk801/tk36/
technologies_configuration_example09186a0080094579.shtml
Configuring AUX-to-AUX Port Async Backup with Dialer Watch, sample configuration
http://www.cisco.com/en/US/tech/tk801/tk36/
technologies_configuration_example09186a0080093d2b.shtml
Modem-Router Connection Guide, tech note
http://www.cisco.com/en/US/tech/tk801/tk36/technologies_tech_note09186a008009428b.shtml
Step 7
show running-config
Example:
Router# show running-config
Displays the running configuration file.
• Verify that you properly configured the virtual terminal
lines for remote access.
Step 8
From another network device, attempt to open a Telnet
session to the router.
Example:
Router# 172.16.74.3
Password:
Verifies that you can remotely access the router and that the
virtual terminal line password is correctly configured.
Command or Action Purpose

Cisco 2901 Specifications

General

Operating altitude	0 - 3000 m
Non-operating altitude	0 - 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 %
Ethernet LAN	Yes
Cabling technology	10/100/1000BASE-T(X)
Networking standards	IEEE 802.1Q, IEEE 802.1ag, IEEE 802.3, IEEE 802.3ab, IEEE 802.3af, IEEE 802.3ah
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet interface type	Gigabit Ethernet
DHCP client	-
Routing protocols	BGP, EIGRP, OSPF
Supported protocols	IPv4, 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
USB version	2.0
RS-232 ports	1
Expansion slots	4 x EHWIC 2 x DSP 1 x ISM
Ethernet LAN (RJ-45) ports	2
Firewall security	Cisco IOS
Input current	1.5 A
AC input voltage	100 - 240 V
Power source type	AC
AC input frequency	47 - 63 Hz
Power consumption (typical)	40 W
Product color	Black
Rack capacity	1U
Safety	UL 60950-1, CAN/CSA C22.2 No. 60950-1, EN 60950-1, AS/NZS 60950-1, IEC 60950-1
Flash memory	256 MB
Internal memory	512 MB
Electromagnetic compatibility	47 CFR, ICES-003, EN55022, CISPR22, AS/NZS 3548, VCCI V-3, EN 300-386, EN 61000, EN 55024, CISPR 24EN50082-1

Weight and Dimensions

Depth	439.4 mm
Width	438.2 mm
Height	44.5 mm
Weight	6100 g