You can configure a management I-SID on an FA-enabled port or MLT. This I-SID includes an optional C-VID parameter, which is a VLAN ID that is locally significant to the port or MLT and does not represent a platform VLAN.
Depending on whether the C-VID value is specified, the behavior is as follows:
If the C-VID value is specified, the FA Server transmits this VLAN ID as the management VLAN in the FA Element TLV. A client or proxy receiving this TLV uses this VLAN ID for management traffic on the FA Server uplink.
If the C-VID value is not specified, the FA Server transmits a management VLAN with a VLAN ID value of 4095 in the FA Element TLV. A client or proxy receiving this TLV uses untagged traffic for network management on the FA Server uplink.
If you do not configure a management I-SID, the FA Server transmits a management VLAN ID value of 0 in the FA Element TLV. A client/proxy that receives the FA Element TLV retains the initial management configuration (if any) on its device.
A management I-SID value of 0 is not supported on the FA Server.
You cannot enable BPDU on a management I-SID.
A Switched UNI I-SID that is created when an FA assignment is learned on a port or MLT, is uniquely identified by a tuple comprising of one of the combinations of (port, I-SID and C-VID) or (MLT ID, I-SID and C-VID). When you configure FA management, similar tuples are used. You can configure FA management on an FA-enabled port or MLT on which FA assignment mappings are learned, as long as the FA management tuple exactly matches the tuple created by the learned FA mapping.
The following scenarios describe the behavior when you configure FA management on a port or MLT that also receives learned FA mappings, but the tuples do not match.
Scenario 1: You attempt to configure FA management on a port or MLT where an FA assignment mapping is already learned.
For example, consider an FA-enabled port 1/1 on which an assignment mapping is learned, with I-SID 100 and C-VID 20. You can configure FA management on port 1/1 as long as the I-SID and C-VID values exactly match that of the learned FA mapping. However, if you attempt to configure FA management on the port with a different I-SID and C-VID value, the configuration is not successful and an error message displays.
Scenario 2: An FA assignment mapping is learned on a port or MLT that already has FA management configured.
For example, consider that FA management is configured on port 1/1. If an FA assignment mapping is learned on the port with the same I-SID and C-VID values as that of the FA management configuration, then the mapping is accepted. Otherwise the mapping is rejected.