Specifications

Spanning Tree Domains
ExtremeWare XOS 11.0 Concepts Guide 201
The first command adds all ports or a list of ports within the specified VLAN to an STPD provided the
carrier VLAN already exists on the same set of ports. The second command adds all ports or a list of
ports to the specified VLAN and STPD at the same time. If the ports are added to the VLAN but not to
the STPD, the ports remain in the VLAN.
If the specified VLAN is not the carrier VLAN and the specified ports are not bound to the carrier
VLAN, the system displays an error message.
NOTE
The carrier VLAN’s VLANid must be identical to the StpdID of the STP domain.
If you add a protected VLAN or port, that addition inherits the carrier VLAN’s encapsulation mode
unless you specify the encapsulation mode when you execute the
configure stpd add vlan or
configure vlan add ports stpd commands. If you specify an encapsulation mode (dot1d, emistp,
or
pvst-plus), the STP port mode is changed to match; otherwise, the STP port inherits either the
carrier VLANs encapsulation mode on that port or the STPD’s default encapsulation mode.
To remove ports, use the following command:
configure stpd <stpd_name> delete vlan <vlan_name> ports [all | <port_list>]
If you manually delete a protected VLAN or port, only that VLAN or port is removed. If you manually
delete a carrier VLAN or port, all VLANs on that port (both carrier and protected) are deleted from that
STPD.
To learn more about member VLANs, see “Member VLANs” on page 197. For more detailed
information about these command line interface (CLI) commands, see the ExtremeWare XOS Command
Reference Guide.
Automatically Binding Ports
To automatically bind ports to an STPD when the ports are added to a VLAN, use the following
command:
enable stpd <stpd_name> auto-bind vlan <vlan_name>
When you issue this command, any port or list of ports that you add to the carrier VLAN are
automatically added to the STPD with autobind enabled. In addition, any port or list of ports that you
remove from a carrier VLAN are automatically removed from the STPD. This feature allows the STPD
to increase or decrease its span as ports are added to or removed from a carrier VLAN.
NOTE
The carrier VLAN’s VLANid must be identical to the StpdID of the STP domain.
Enabling autobind on a protected VLAN does not expand the boundary of the STPD. If the same set of
ports are members of the protected VLAN and the carrier VLAN, protected VLANs are aware of STP
state changes. For example, assume you have the following scenario:
• Carrier VLAN named v1
• v1 contains ports 3:1-3:2