Specifications

configure vlan add ports stpd
ExtremeWare XOS 10.1 Command Reference Guide 387
configure vlan add ports stpd
configure vlan <vlan_name> add ports [all | <port_list>] stpd <stpd_name>
{[dot1d | emistp | pvst-plus]}
Description
Adds all ports or a list of ports within a VLAN to a specified STPD.
Syntax Description
Default
All ports are in emistp mode, except those in STPD s0, whose default setting is dot1d mode.
Usage Guidelines
After you have created both the VLAN and the STPD with unique names, the keywords vlan and stpd
are optional.
This command performs the same function as the configure stpd add vlan command.
This command adds a list of ports within a VLAN to a specified STPD provided the carrier VLAN
already exists on the same set of ports. You can also specify the encapsulation mode for those ports. If
the specified VLAN is not the carrier VLAN, and the specified ports are not bound to the carrier VLAN,
an error message is displayed.
You can specify the following STP encapsulation modes:
• dot1d—This mode is reserved for backward compatibility with previous STP versions. BPDUs are
sent untagged in 802.1d mode. Because of this, any given physical interface can have only one STPD
running in 802.1d mode.
• emistp—This mode sends BPDUs with an 802.1Q tag having an STPD instance Identifier (StpdID) in
the VLANid field.
• pvst-plus—This mode implements PVST+ in compatibility with third-party switches running this
version of STP. The STPDs running in this mode have a one-to-one relationship with VLANs, and
send and process packets in PVST+ format.
These encapsulation modes are for STP ports, not for physical ports. When a physical ports belongs to
multiple STPDs, it is associated with multiple STP ports. It is possible for the physical port to run in
different modes for different domains for which it belongs.
vlan_name Specifies a VLAN name.
all Specifies all of the ports to be included in the STPD.
port_list Specifies the port or ports to be included in the STPD.
stpd_name Specifies an STPD name on the switch.
dot1d Specifies the STP encapsulation mode of operation to be 802.1d.
emistp Specifies the STP encapsulation mode of operation to be EMISTP.
pvst-plus Specifies the STP encapsulation mode of operation to be PVST+.