Setting The Switch-To-Client Frame-Retransmission Number; Enabling Multiple Hosts - Cisco WS-C3550-12G Software Configuration Manual

Chapter 7 Configuring 802.1X Port-Based Authentication

Setting the Switch-to-Client Frame-Retransmission Number

In addition to changing the switch-to-client retransmission time, you can change the number of times
that the switch sends an EAP-request/identity frame (assuming no response is received) to the client
before restarting the authentication process.
Note You should change the default value of this command only to adjust for unusual circumstances such
as unreliable links or specific behavioral problems with certain clients and authentication servers.
Beginning in privileged EXEC mode, follow these steps to set the switch-to-client frame-retransmission
number:
Command
Step 1 configure terminal
Step 2 dot1x max-req count
Step 3 end
Step 4
show dot1x
Step 5
copy running-config startup-config
To return to the default retransmission number, use the no dot1x max-req global configuration
command.
This example shows how to set 5 as the number of times that the switch sends an EAP-request/identity
request before restarting the authentication process:
Switch(config)# dot1x max-req 5

Enabling Multiple Hosts

You can attach multiple hosts to a single 802.1X-enabled port as shown in
this mode, only one of the attached hosts must be successfully authorized for all hosts to be granted
network access. If the port becomes unauthorized (re-authentication fails or an EAPOL-logoff message
is received), all attached clients are denied access to the network.
Beginning in privileged EXEC mode, follow these steps to allow multiple hosts (clients) on an
802.1X-authorized port that has the dot1x port-control interface configuration command set to auto.
Command
Step 1 configure terminal
Step 2
interface interface-id
Step 3
dot1x multiple-hosts
78-11194-03
Purpose
Enter global configuration mode.
Set the number of times that the switch sends an EAP-request/identity
frame to the client before restarting the authentication process. The range
is 1 to 10; the default is 2.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Purpose
Enter global configuration mode.
Enter interface configuration mode, and specify the interface to which
multiple hosts are indirectly attached.
Allow multiple hosts (clients) on an 802.1X-authorized port.
Make sure that the dot1x port-control interface configuration command
set is set to auto for the specified interface.
Catalyst 3550 Multilayer Switch Software Configuration Guide
Configuring 802.1X Authentication
Figure 7-3 on page 7-5. In
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