Brocade Communications Systems 6650 manual Multi-device port authentication configuration

Multi-device port authentication configuration

Configuration notes and limitations

•This feature works in conjunction with multi-device port authentication with dynamic VLAN assignment only. If this feature is not enabled, authentication works as in “Example 1— Multi-device port authentication with dynamic VLAN assignment” on page 262.

•The port on which ingress filtering is disabled must be tagged to a VLAN.

•If a host sends both tagged and untagged traffic, and ingress filtering is disabled on the port, the port must be configured as a dual-mode port.

Specifying to which VLAN a port is moved after its RADIUS-specified VLAN assignment expires

When a port is dynamically assigned to a VLAN through the authentication of a MAC address, and the MAC session for that address is deleted on the Brocade device, then by default the port is removed from its RADIUS-assigned VLAN and placed back in the VLAN where it was originally assigned.

A port can be removed from its RADIUS-assigned VLAN when any of the following occur:

•The link goes down for the port

•The MAC session is manually deleted with the mac-authenticationclear-mac-sessioncommand

•The MAC address that caused the port to be dynamically assigned to a VLAN ages out

For example, say port 1/1/1 is currently in VLAN 100, to which it was assigned when MAC address 0007.eaa1.e90f was authenticated by a RADIUS server. The port was originally configured to be in VLAN 111. If the MAC session for address 0007.eaa1.e90f is deleted, then port 1/1/1 is moved from VLAN 100 back into VLAN 111.

You can optionally specify an alternate VLAN to which to move the port when the MAC session for the address is deleted. For example, to place the port in the restricted VLAN, enter commands such as the following.

Brocade(config)# interface ethernet 1/3/1 Brocade(config-if-e10000-1/3/1)# mac-auth move-back-to-old-vlan port-restrict-vlan

Syntax: [no] mac-authentication move-back-to-old-vlan port-restrict-vlanport-configured-vlan system-default-vlan

The port-configured-vlankeyword removes the port from its RADIUS-assigned VLAN and places it back in the VLAN where it was originally assigned. This is the default.

The port-restrict-vlankeyword removes the port from its RADIUS-assigned VLAN and places it in the restricted VLAN.

The system-default-vlankeyword removes the port from its RADIUS-assigned VLAN and places it in the DEFAULT-VLAN.

NOTE

When a MAC session is deleted, if the port is moved back to a VLAN that is different than the running- config file, the system will update the running-config file to reflect the changes. This will occur even if mac-authenticationsave-dynamicvlan-to-config"is not configured.

242	Brocade ICX 6650 Security Configuration Guide
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