Vlans; Stp - Extreme Networks ExtremeWare XOS Guide Manual

Troubleshooting
You verify the VLAN configuration using the following command:
show vlan {detail |<vlan_name> {stpd}}
The solution for this error using this example is to remove ports 1 and 2 from the VLAN currently using
untagged traffic on those ports. If this were the "default" VLAN, the command would be:
localhost:23 # configure vlan default delete ports 1:1,1:2
You can now re-enter the previous command without error:
localhost:26 # configure vlan marketing add ports 1:1,1:2
VLAN names:
There are restrictions on VLAN names. They cannot contain whitespaces and cannot start with a
numeric value.
VLANs, IP addresses, and default routes:
The system can have an IP address for each configured VLAN. You must configure an IP address
associated with a VLAN if you intend to manage (Telnet, SNMP, ping) through that VLAN or route IP
traffic.
You can also configure multiple default routes for the system. The system first tries the default route
with the lowest cost metric.

STP

You have connected an endstation directly to the switch and the endstation fails to boot correctly:
The switch has the Spanning Tree Protocol (STP) enabled, and the endstation is booting before the STP
initialization process is complete. Specify that STP has been disabled for that VLAN, or turn off STP for
the switch ports of the endstation and devices to which it is attempting to connect; then, reboot the
endstation.
Spanning Tree Domain names:
There are restrictions on Spanning Tree Domain (STPD) names. They cannot contain whitespaces and
cannot start with a numeric value.
You cannot add ports within a VLAN to the specified STPD:
Check to ensure that you are adding ports that already exist in the carrier VLAN.
If you see an error similar to the following:
Error: Cannot add VLAN default port 3:5 to STP domain
You might be attempting to add:
Another 802.1D mode STP port to a physical port that already contains an 802.1D mode STP port
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(only one 802.1D encapsulation STP port can be configured on a particular STP port).
A carrier VLAN port to a different STP domain than the carrier VLAN belongs.
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A VLAN and/or port for which the carrier VLAN does not yet belong.
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ExtremeWare XOS 11.3 Concepts Guide