C
HAPTER
27
| Authentication Commands
802.1X Port Authentication
– 693 –
show ssh This command displays the current SSH server connections.
COMMAND MODE
Privileged Exec
EXAMPLE
Console#show ssh
Connection Version State Username Encryption
0 2.0 Session-Started admin ctos aes128-cbc-hmac-md5
stoc aes128-cbc-hmac-md5
Console#
802.1X PORT AUTHENTICATION
The switch supports IEEE 802.1X (dot1x) port-based access control that
prevents unauthorized access to the network by requiring users to first
submit credentials for authentication. Client authentication is controlled
centrally by a RADIUS server using EAP (Extensible Authentication
Protocol).
Table 63: show ssh - display description
Field Description
Session The session number. (Range: 0-3)
Version The Secure Shell version number.
State The authentication negotiation state.
(Values: Negotiation-Started, Authentication-Started, Session-
Started)
Username The user name of the client.
Table 64: 802.1X Port Authentication Commands
Command Function Mode
General Commands
dot1x default Resets all dot1x parameters to their default values GC
dot1x eapol-pass-through Passes EAPOL frames to all ports in STP forwarding
state when dot1x is globally disabled
GC
dot1x system-auth-control Enables dot1x globally on the switch. GC
Authenticator Commands
dot1x intrusion-action Sets the port response to intrusion when
authentication fails
IC
dot1x max-req Sets the maximum number of times that the switch
retransmits an EAP request/identity packet to the
client before it times out the authentication session
IC
dot1x operation-mode Allows single or multiple hosts on an dot1x port IC
dot1x port-control Sets dot1x mode for a port interface IC
dot1x re-authentication Enables re-authentication for all ports IC
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