FA Zero Touch Client Attachment

Table 1. Fabric Attach Zero Touch Client Attachment product support
Feature	Product	Release introduced
Fabric Attach Zero Touch Client Attachment	5320 Series	Fabric Engine 8.6
	5420 Series	VOSS 8.4
	5520 Series	VOSS 8.2.5
	5720 Series	Fabric Engine 8.7

FA Zero Touch Client Attachment eases the configuration process on FA-capable devices by automating specific configuration tasks required for FA functionality.

Note

Only the base functionality of Zero Touch Client Attachment is supported.

After you initially configure Zero Touch Client Attachment on the FA Server, the settings are exported to receiving FA devices, where the required configuration tasks are automatically performed.

Base Zero Touch Client Attachment operation is tightly coupled with FA operation. Although you can enable or disable Zero Touch Client Attachment separately from FA, the feature is dependant on data that is only available during exchanges between the FA Server and FA Proxies, after a primary FA Server has been selected. By default, base Zero Touch Client Attachment support is enabled.

Base Zero Touch Client Attachment operation, when enabled, extracts management VLAN data from the primary FA Server advertisements and uses this data to update the in-use management VLAN if applicable. An FA Client can also utilize FA-provided management VLAN data after the FA Proxy or Server is discovered.

Zero Touch is active when the following criteria are met:

On an FA Proxy:
- Zero Touch Client Attachment is enabled
- Fabric Attach is enabled
- A primary FA Server is discovered and selected
On an FA Server:
- Zero Touch Client Attachment is enabled
- FA is enabled
- FA Proxies or FA Clients are discovered

The switch supports configurable VLANs in the range of 1 to 4059. VLAN 0 is invalid. VLAN ID 1 is the default VLAN and you cannot create or delete VLAN ID 1. VLAN IDs on the switch range from 2 to 4094 but, by default, the system reserves VLAN IDs 4060 to 4094 for internal use. On switches that support the vrf-scaling and spbm-config-mode boot configuration flags, if you enable these flags, the system also reserves VLAN IDs 3500 to 3998.

Note

You must enable Base Zero Touch auto-client attach and define the target Fabric Attach client in order to initiate Zero Touch Client Attachment processing.

FA Signaling generated by an FA Proxy or Server contains management VLAN data. If the management VLAN advertised by the primary FA Server differs from the management VLAN currently configured on the FA Proxy, Zero Touch Client Attachment initiates the following:

VLAN creation — If the FA Server-specified management VLAN does not exist on the FA Proxy, Zero Touch Client Attachment creates a port-based VLAN.
Management VLAN update — The created port-based VLAN becomes the designated management VLAN for the FA Proxy. No operations related to the previous management VLAN, such as port membership updates or VLAN deletion, are performed.
Port VLAN membership update (FA Proxy/Server) — If required, Zero Touch Client Attachment updates the port VLAN membership to ensure that the uplink port through which the primary FA Server is accessed is a member of the management VLAN, for network accessibility.
Port Default VLAN (PVID) update — The port-based PVID is automatically updated based on the VLAN ID value.
Port Default Priority update — The default 802.1p user priority for the port is updated based on the specified port priority value of the Zero Touch client (range is 0–7).
Zero Touch Client Specification removal — All Zero Touch client-related settings are updated based on the FA client discovery. Deleting a Zero Touch client specification or disabling any related Zero Touch option does not result in the immediate removal of any previously applied settings.

Note

The FA Proxy does not update the acquired management VLAN if the primary FA Server is lost. This data is updated if the management VLAN advertised by the current primary FA Server changes or if another primary FA Server is selected and new management VLAN data is advertised by the server.

Management VLAN and port membership updates performed by Zero Touch are maintained in non-volatile storage and are restored following a system reset. You must remove or update these configuration settings if they are deemed unnecessary at a later time.

IP Address Source Mode Update — Updates the IP address source mode of the receiving device to DHCP-When-Needed, to initiate DHCP-based IP address acquisition if necessary.
Automation of the FA Client Port Mode — Automates the configuration of EAP port modes based on the type of discovered FA Clients. Applies to FA Proxy and FA Server devices. Automated configuration is applied only to FA-enabled ports.
ZTC Installation — Initiates ZTC installation on applicable ports on the receiving device. Applies to FA Proxy and, in a limited manner, to FA Server devices. Automated configuration is applied only to FA-enabled ports.
Auto PVID FA Client Port Mode — Initiates automatic port PVID, port management VLAN membership and post tagging mode based on the type of discovered FA device. Applies to FA Proxy and FA Server devices. Automated configuration is applied only to FA-enabled ports. This configuration is incompatible with the automatic FA Client Port Mode and ZTC Automatic attach options.