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SVF Setup
SVF Setup
Operations Performed by Different Roles During SVF
Setup
NOTE:
The parent can be a standalone device, a stack, or a cluster switch system (CSS). An
AS can be a standalone device or a stack. If an AS is a stack, see
"Restrictions on SVF Roles" in Licensing Requirements and Limitations for SVF.
Figure 10-3 SVF networking
In Figure 10-3, SVF allows
the parent and client to establish a Control And Provisioning of Wireless
Access Points (CAPWAP) link as the control channel for unified client
configuration and management. This process is similar to AP management
by an AC in WLANs. During SVF setup, some operations need to be performed
on the parent and client to establish a CAPWAP link.
The
parent is directly connected to level-1 ASs, but level-1 ASs are not
connected to level-2 ASs.
No.
Role
Operations
1
Parent
Create a management VLAN for Layer 2 communication with the client.
Configure a DHCP address pool to allocate a management IP address
to the client.
Create a CAPWAP source interface for communication with the client.
Enable the SVF function on the parent.
2
Fabric port between the parent and a level-1 AS
Parent-side fabric port (numbered 1 in Figure 10-3): Manually add a physical member
port of the level-1 AS to the fabric port.
Level-1 AS-side fabric port (numbered 2 in Figure 10-3): Enable the level-1 AS and
parent to automatically negotiate a fabric port after the parent-side
fabric port is configured.
3
Level-1 AS
Change to the client mode.
A switch in client mode has
no independent configuration file, and you cannot configure services
on it directly. All configurations are delivered to client switches
from the parent. If a switch has no configuration file and no input
on the console port, it performs auto-negotiation with the parent
to change its mode.
Obtain management VLAN information automatically through the
parent.
The parent is directly connected to level-1 ASs,
and level-1 ASs are connected to level-2 ASs.
No.
Role
Operations
1
Parent
Create a management VLAN for Layer 2 communication with the client.
Configure a DHCP address pool to allocate a management IP address
to the client.
Create a CAPWAP source interface for communication with the client.
Enable the SVF function on the parent.
2
Fabric port between the parent and a level-1 AS
Parent-side fabric port (numbered 1 in Figure 10-3): Manually add a physical member
port of the level-1 AS to the fabric port.
Level-1 AS-side fabric port (numbered 2 in Figure 10-3): Enable the level-1 AS and
parent to automatically negotiate a fabric port after the parent-side
fabric port is configured.
3
Level-1 AS
Change to the client mode.
A switch in client mode has
no independent configuration file, and you cannot configure services
on it directly. All configurations are delivered to client switches
from the parent. If a switch has no configuration file and no input
on the console port, it performs auto-negotiation with the parent
to change its mode.
Obtain management VLAN information automatically through the
parent.
4
Fabric port between a level-1 AS and a level-2 AS
Level-1 AS-side fabric port (numbered 5 in Figure 10-3): On the parent, manually add
a physical member port of the level-2 AS to the fabric port.
Level-2 AS-side fabric port (numbered 6 in Figure 10-3): Enable the level-2 AS and
level-1 AS to automatically negotiate a fabric port.
5
Level-2 AS
Change to the client mode, similarly to the way a level-1 AS
changes to the client mode.
Obtain management VLAN information automatically through the
parent.
The parent is connected to level-1 AS across a network.
No.
Role
Operations
1
Parent
Create a management VLAN for Layer 2 communication with the client.
Configure a DHCP address pool to allocate a management IP address
to the client.
Create a CAPWAP source interface for communication with the client.
Enable the SVF function on the parent.
2
Fabric port between the parent and a level-1 AS
Parent-side fabric port (numbered 3 in Figure 10-3): Manually add a physical member
port of the level-1 AS to the fabric port, and change the fabric port
to the indirect connection mode.
Level-1 AS-side fabric port (numbered 4 in Figure 10-3): Manually add a physical member
port that connects the level-1 AS to the parent.
3
Level-1 AS
Manually force the level-1 AS to change to the client mode.
Configure a management VLAN on the level-1 AS, which must be
consistent with the management VLAN of the parent.
SVF Setup Process
An SVF system goes through
the following phases before being setting up:
Neighbor discovery: A parent sends information including the
management VLAN to an AS through neighbor discovery.
Device management: The AS obtains an IP address through DHCP
and establishes a Control And Provisioning of Wireless Access Points
(CAPWAP) link with the parent and registers with the parent.
Version management: The AS checks whether its software version
is the same as that of the parent. If not, the AS downloads the system
software from the parent to upgrade and synchronize its software version
with that of the parent.
Topology management: The parent collects LLDP neighbor information
of all ASs and calculates the SVF topology.
Service configuration: In direct configuration mode, the parent
sends service configurations to ASs over CAPWAP links. In independent
configuration mode, service configurations are performed on ASs independently.
NOTE: 
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