![](/images/backgrounds/285815/hp-4100gl-users-manual-549937140x1.png)
Configuring
How 802.1x Operates
This operation provides security on links between
■Switch "A" has port A1 configured for 802.1x supplicant operation.
■You want to connect port A1 on switch "A" to port B5 on switch "B".
Switch "B"
Port B5
Port A1
Switch "A"
Port A1 Configured as an
802.1x Supplicant
LAN Core | RADIUS Server |
1.When port A1 on switch "A" is first connected to a port on switch "B", or if the ports are already connected and either switch reboots, port A1 begins sending start packets to port B5 on switch "B".
•If, after the supplicant port sends the configured number of start packets, it does not receive a response, it assumes that switch "B" is not
•If, after sending one or more start packets, port A1 receives a request packet from port B5, then switch "B" is operating as an 802.1x authen-
ticator. The supplicant port then sends a response/ID packet. Switch "B" forwards this request to a RADIUS server.
2.The RADIUS server then responds with an MD5 access challenge that switch "B" forwards to port A1 on switch "A".
3.Port A1 replies with an MD5 hash response based on its username and password or other unique credentials . Switch "B" forwards this response to the RADIUS server.
4.The RADIUS server then analyzes the response and sends either a "suc- cess" or "failure" packet back through switch "B" to port A1.
•A "success" response unblocks port B5 to normal traffic from port A1.