HP 2600-PWR, 4100gl, 2650 (J4899A/B), 2626 (J4900A/B), 6108 manual 802.1X Open Vlan Operating Notes

Configuring Port-Based Access Control (802.1X)

802.1X Open VLAN Mode

Inspecting 802.1X Open VLAN Mode Operation. For information and an example on viewing current Open VLAN mode operation, refer to “Viewing 802.1X Open VLAN Mode Status” on page 8-40.

802.1X Open VLAN Operating Notes

■Although you can configure Open VLAN mode to use the same VLAN for both the Unauthorized-Client VLAN and the Authorized-Client VLAN, this is not recommended. Using the same VLAN for both purposes allows unauthenticated clients access to a VLAN intended only for authenticated clients, which poses a security breach.

■While an Unauthorized-Client VLAN is in use on a port, the switch temporarily removes the port from any other statically configured VLAN for which that port is configured as a member. Note that the Menu interface will still display the port’s statically configured VLAN(s).

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A VLAN used as the Unauthorized-Client VLAN should not allow access to resources that must be protected from unauthenticated clients.

If a port is configured as a tagged member of VLAN "X" that is not used as an Unauthorized-Client, Authorized-Client, or RADIUS-assigned VLAN, then the port returns to tagged membership in VLAN "X" upon successful client authentication. This happens even if the RADIUS server assigns the port to another, authorized VLAN "Y". Note that if RADIUS assigns VLAN "X" as an authorized VLAN, then the port becomes an untagged member of VLAN "X" for the duration of the client connection. After the client disconnects, the port returns to tagged membership in VLAN "X". (If there is no Authorized-Client or RADIUS-assigned VLAN, then an authenticated client without tagged VLAN capability can access only a statically configured, untagged VLAN on that port.)

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When a client’s authentication attempt on an Unauthorized-Client VLAN fails, the port remains a member of the Unauthorized-Client VLAN until the client disconnects from the port.

During an authentication session on a port in 802.1X Open VLAN mode, if RADIUS specifies membership in an untagged VLAN, this assignment overrides port membership in the Authorized-Client VLAN. If there is no Authorized-Client VLAN configured, then the RADIUS assignment overrides any untagged VLAN for which the port is statically configured.

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