Extreme Networks ExtremeWare XOS Guide Manual page 141

Spanning Tree Domains
STP ports mode is changed to match, otherwise the STP ports inherit either the carrier VLANs
encapsulation mode on that port or the STPD 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 137. For more detailed
information about these commands, see the ExtremeWare XOS Command Reference Guide.
Automatically Binding Ports
To automatically bind ports to an STPD when they 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 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 StpdID must be identical to the VLANid of one of the member VLANs in that STP
domain.
Enabling autobind on a protected VLAN does not expand the boundary of the STPD. Protected VLANs
are aware of STP state changes provided the same set of ports are members of the protected VLAN and
the carrier VLAN. For example, assume you have the following scenario:
• Carrier VLAN named v1
• v1 contains ports 3:1-3:2
• Protected VLAN named v2
• v2 contains ports 3:1-3:4
Since v1 contains ports 3:1-3:2, v2 is only aware of the STP changes for ports 3:1 and 3:2, respectively.
Ports 3:3 and 3:4 are not part of the STPD, which is why v2 is not aware of any STP changes for those
ports.
To remove ports, use the following command:
configure stpd <stpd_name> delete vlan <vlan_name> ports [all | <port_list>}
If you manually delete a port from the STPD on a VLAN that has been added by autobind,
ExtremeWare XOS records the deletion so that the port does not get automatically added to the STPD
after a system restart.
To learn more about the member VLANs, see "Member VLANs" on page 137. For more detailed
information about these command, see the ExtremeWare XOS Command Reference Guide.
ExtremeWare XOS 10.1 Concepts Guide 141