API Guide

tacacs-server vrf
Creates an association between a TACACS server group and a VRF and source interface.
Syntax
tacacs-server vrf {management | vrf-name}
Parameters
● management — Enter the keyword to associate TACACS servers to the management VRF instance.
This option restricts the TACACS server association to the management VRF only.
● vrf-name — Enter the keyword then the name of the VRF to associate TACACS servers with that
VRF.
Defaults None.
Command Mode CONFIGURATION
Usage
Information
Use this command to associate TACACS servers with a VRF instance. If you do not configure a VRF in
the TACACS server list, the servers are on the default VRF instance. TACACS server lists and VRFs have
one-to-one mapping. When you remove the VRF instance, the TACACS server lists are also removed
automatically.
The no version of this command resets the value to the default.
Example
[no] tacacs-server management
[no] tacacs-server vrf red
Supported
Releases
10.4.3.0E or later
SSH server
In OS10, the secure shell server allows an SSH client to access an OS10 switch through a secure, encrypted connection. The
SSH server authenticates remote clients using RADIUS challenge/response, a trusted host file, locally-stored passwords, and
public keys.
Configure SSH server
● The SSH server is enabled by default. You can disable the SSH server using the no ip ssh server enable command.
● Challenge response authentication is disabled by default. To enable, use the ip ssh server challenge-response-
authentication command.
● Host-based authentication is disabled by default. To enable, use the ip ssh server hostbased-authentication
command.
● Password authentication is enabled by default. To disable, use the no ip ssh server password-authentication
command.
● Public key authentication is enabled by default. To disable, use the no ip ssh server pubkey-authentication
command.
● Password-less login is disabled by default. To enable, use the username sshkey or username sshkey filename
commands.
● Configure the list of cipher algorithms using the ip ssh server cipher cipher-list command.
● Configure key exchange algorithms using the ip ssh server kex key-exchange-algorithm command.
● Configure hash message authentication code (HMAC) algorithms using the ip ssh server mac hmac-algorithm
command.
● Configure the SSH server listening port using the ip ssh server port port-number command.
● Configure the SSH server to be reachable on the management VRF using the ip ssh server vrf command.
● Configure the SSH login timeout using the ip ssh server login-grace-time seconds command, from 0 to 300;
default 60. To reset the default SSH prompt timer, use the no ip ssh server login-grace-time command.
● Configure the maximum number of authentication attempts using the ip ssh server max-auth-tries number
command, from 0 to 10; default 6. To reset the default, use the no ip ssh server max-auth-tries command.
The max-auth-tries value includes all authentication attempts, including public-key and password. If you enable both,
public-key based authentication and password authentication, the public-key authentication is the default and is tried first. If
1038
Security