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Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Chapter Administering the Wireless Device
Configuring the Access Point for Secure Shell
clear Commands
To clear DHCP server variables, use the commands in Table 5, in privileged EXEC mode.
debug Command
To enable DHCP server debugging, use the following command in privileged EXEC mode:
debug ip dhcp server {events | packets | linkage}
Use the no form of the command to disable debugging for the wireless device DHCP server.
Configuring the Access Point for Secure Shell
This section describes how to configure the Secure Shell (SSH) feature.
Note For complete syntax and usage information for the commands used in this section, see the “Secure Shell
Commands” section in Cisco IOS Security Command Reference for Release 12.4.
Understanding SSH
SSH is a protocol that provides a secure, remote connection to a Layer 2 or Layer 3 device. There are
two versions of SSH: SSH version 1 and SSH version 2. This software release supports both SSH
versions. If you do not specify the version number, the access point defaults to version 2.
SSH provides more security for remote connections than Telnet by providing strong encryption when a
device is authenticated. The SSH feature has an SSH server and an SSH integrated client. The client
supports the following user authentication methods:
• RADIUS (for more information, see the “Controlling Access Point Access with RADIUS” section
on page 305)
• Local authentication and authorization (for more information, see the “Configuring the Access Point
for Local Authentication and Authorization” section on page 328)
For more information about SSH, see Part 5, “Other Security Features” in the Cisco IOS Security
Configuration Guide for Release 12.4.
Table 5 Clear Commands for DHCP Server
Command Purpose
clear ip dhcp binding
{address | *}
Deletes an automatic address binding from the
DHCP database. Specifying the address argument
clears the automatic binding for a specific (client)
IP address. Specifying an asterisk (*) clears all
automatic bindings.
clear ip dhcp conflict
{address | *}
Clears an address conflict from the DHCP
database. Specifying the address argument clears
the conflict for a specific IP address. Specifying
an asterisk (*) clears conflicts for all addresses.
clear ip dhcp server statistics Resets all DHCP server counters to 0.
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