EasyManuals Logo

Cisco 2921 User Manual

Cisco 2921
408 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #17 background imageLoading...
Page #17 background image
9
Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Chapter Overview of the Hardware and Software
IOS Commands
Copy running
configuration to
startup
configuration.
copy
running-config
startup-config
This command
copies running
configuration to
startup
configuration.
Router#copy
running-config
startup-config
A BFD flap is not triggered for all 'write
mem' commands. For instance, when the
configuration attributes changes without
either a write or an erase+write on the
NVRAM, the BFD is not triggered.
In the following example, when one of the
configuration elements are
activated/deactivated and the configuration
is saved using the 'write mem' command, the
flap is triggered:
(config)#warm-reboot
(config)#boot config
(config)#boot system
Changing boot
variables.
boot {bootstrap |
config |host|
netowrk |
system}
This command
configures
bootstrap image
file, configuration
file, router
specific config
file, Networkwide
config file or
system image file.
Router(config)#bo
ot bootstrap
Potential enough to flap bfd.
Setting the
system software
clock manually.
clock set
hh:mm:ss day
month year
To manually set
the system
software clock,
use one of the
formats of the
clock set
command in
privileged EXEC
mode.
clock set
hh:mm:ss day
month year
clock set
hh:mm:ss month
day year
Router#clock set
13:32:00 23 July
1997
Potential enough to flap bfd.
Note Every time the command is issued.
Table 7 Cisco IOS Commands
Functionality Command Name Description
Configuration
Example Impact

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Cisco 2921 and is the answer not in the manual?

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

Related product manuals