Timer Syntax Default Setting (Milliseconds)
CTS delay half-duplex timer cts-delay 100
CTS drop timeout half-duplex timer cts-drop-timeout 5000
DCD drop delay half-duplex timer dcd-drop-delay 100
DCD transmission start delay half-duplex timer dcd-txstart-delay 100
RTS drop delay half-duplex timer rts-drop-delay 100
RTS timeout half-duplex timer rts-timeout 2000
Transmit delay half-duplex transmit-delay 0
Specifying the Boot Method
You can enter multiple boot commands in the configuration in NVRAM to provide backup methods for
loading the Cisco IOS image onto the router. The router boots using the first boot command that succeeds. If
you enter multiple boot commands, the router executes them in the order they are entered. There are two ways
to load the Cisco IOS image: from Flash memory or from a TFTP server on the network.
Flash memory1.
Information stored in Flash memory is not vulnerable to network failures that might occur when you
load system software from servers. In the following example, replace filename with the filename of the
Cisco IOS image:
Router> enable
Password: enablepassword
Router# configure terminal
Router (config)# boot system flash filename
Router (config)# Ctrl-Z
Router# copy running-config startup-config
Building configuration ...
[OK]
Router# exit
Router>
TFTP server1.
If Flash memory is not available, or if Flash memory does not contain a valid Cisco IOS image, you can
specify that system software be loaded from a TFTP server on your Ethernet network as a backup boot
method for the router. In the following example, replace filename with the filename of the Cisco IOS
image, and replace ipaddress with the IP address of the TFTP server:
Router> enable
Password: enablepassword
Router# configure terminal
Router (config)# boot system tftp filename ipaddress
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_fix/cis2500/2520/2520_23/c2520cfg.htm (14 of 16) [10/27/2000 3:07:51 PM]
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