Command Reference Guide
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IMPORTANT: If TACACS+ is enabled, you must login using TACACS+ authentication when
connecting via the console or Telnet/SSH/HTTP/HTTPS. Backdoor for console is always enabled, so
you can connect using notacacs and the administrator password even if the backdoor (telnet-
backdoor) or secure backdoor (secure-backdoor) are disabled.
If Telnet backdoor is enabled (telnet-backdoor), type in notacacs as a backdoor to bypass
TACACS+ checking, and use the administrator password to log into the switch. The switch allows this
even if TACACS+ servers are available.
If secure backdoor is enabled (secure-backdoor), type in notacacs as a backdoor to bypass
TACACS+ checking, and use the administrator password to log into the switch. The switch allows this
only if TACACS+ servers are not available.
NTP server configuration
These commands enable you to synchronize the switch clock to a Network Time Protocol (NTP) server. By
default, this option is disabled.
The following table describes the NTP Server Configuration commands.
Table 82 NTP Server Configuration commands
Command
Description
[no] ntp primary-server <IP
address> {data-port|mgt-port}
Prompts for the IP addresses of the primary NTP server to which
you want to synchronize the switch clock. For example,
100.10.1.1
Command mode: Global configuration
[no] ntp secondary-server <IP
address> {data-port|mgt-port}
Prompts for the IP addresses of the secondary NTP server to
which you want to synchronize the switch clock. For example,
100.10.1.2
Command mode: Global configuration
ntp interval <1-44640>
Specifies the interval, in minutes (1-44640), to resynchronize the
switch clock with the NTP server. The default is 1440 minutes.
Command mode: Global configuration
ntp enable
Enables the NTP synchronization service.
Command mode: Global configuration
no ntp enable
Disables the NTP synchronization service. This is the default.
Command mode: Global configuration
show ntp
Displays the current NTP service settings.
Command mode: All










