Manage Device Security
493
M4300 Series and M4300-96X Fully Managed Switches User Manual
5. Select Security > Management Security > RADIUS > Radius Configuration.
The Current Server IP Address
field is blank if no servers are configured (see Configure
a RADIUS Server on page 495). The switch supports up to three configured RADIUS
servers. If more than one RADIUS servers is configured, the current server is the primary
server. If no servers are configured as the primary server
, the current server is the most
recently added RADIUS server.
6. In the Source Interface list, select the interface to use for RADIUS.
Possible values are as follows:
• None
• Routing interface
• Routing VLAN
• Routing loopback interface
• Service Port
By default, VLAN 1 is used as source interface.
7. In the Max Number of Retransmits field, specify the maximum number of times a request
packet is retransmitted to the RADIUS server
.
The valid range is 1– 15.
The default value is 4.
Consider the maximum delay time when you configure the RADIUS maximum retransmit
and RADIUS time-out. If multiple RADIUS servers are configured, the maximum
retransmit value on each is exhausted before the next server is attempted. A retransmit
does not occur until the configured time-out value on that server passed without a
response from the RADIUS server
. Therefore, the maximum delay in receiving a
response from the RADIUS application equals the retransmit times the time-out for all
configured servers. If the RADIUS request was generated by a user login attempt, all
user interfaces are blocked until the RADIUS application returns a response.
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