R211x-HP Flexfabric 11900 Security Command Reference

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mdc-admin
Parameters
handshake-period handshake-period-value: Sets the handshake timer in seconds. The value range for
the handshake-period-value argument is 5 to 1024.
quiet-period quiet-period-value: Sets the quiet timer in seconds. The value range for the
quiet-period-value argument is 10 to 120.
reauth-period reauth-period-value: Sets the periodic re-authentication timer in seconds. The value range
for the reauth-period-value argument is 60 to 7200.
server-timeout server-timeout-value: Sets the server timeout timer in seconds. The value range for the
server-timeout-value argument is 100 to 300.
supp-timeout supp-timeout-value: Sets the client timeout timer in seconds. The value range for the
supp-timeout-value argument is 1 to 120.
tx-period tx-period-value: Sets the username request timeout timer in seconds. The value range for the
tx-period-value argument is 10 to 120.
Usage guidelines
In most cases, the default settings are sufficient. You can edit the timers depending on your network
conditions:
• In a low-speed network, increase the client timeout timer.
• In a vulnerable network, set the quiet timer to a high value.
• In a high-performance network with quick authentication response, set the quiet timer to a low
value.
• In a network with authentication servers of different performance, adjust the server timeout timer.
The network device uses the following 802.1X timers:
• Handshake timer (handshake-period)—Sets the interval at which the access device sends client
handshake requests to check the online status of a client that has passed authentication. If the
device receives no response after sending the maximum number of handshake requests, it considers
that the client has logged off.
• Quiet timer (quiet-period)—Starts when a client fails authentication. The access device must wait
the time period before it can process the authentication attempts from the client.
• Periodic re-authentication timer (reauth-period)—Sets the interval at which the network device
periodically re-authenticates online 802.1X users. To enable periodic online user re-authentication
on a port, use the dot1x re-authenticate command. The change to the periodic re-authentication
timer applies to the users that have been online only after the old timer expires.
• Server timeout timer (server-timeout)—Starts when the access device sends a RADIUS
Access-Request packet to the authentication server. If no response is received when this timer
expires, the access device retransmits the request to the server.
• Client timeout timer (supp-timeout)—Starts when the access device sends an EAP-Request/MD5
Challenge packet to a client. If no response is received when this timer expires, the access device
retransmits the request to the client.
• Username request timeout timer (tx-period)—Starts when the device sends an EAP-Request/Identity
packet to a client in response to an authentication request. If the device receives no response before
this timer expires, it retransmits the request. The timer also sets the interval at which the network
device sends multicast EAP-Request/Identity packets to detect clients that cannot actively request
authentication.