User guide

E
XTREME
W
ARE
S
OFTWARE
U
SER
G
UIDE
8-3
STP C
ONFIGURATIONS
For more information on GVRP, refer to Chapter 6.
D
EFAULTS
The default device configuration contains a single STPD called s0. The default VLAN is
a member of STPD s0.
All STP parameters default to the IEEE 802.1D values, as appropriate.
STP C
ONFIGURATIONS
When you assign VLANs to an STPD, pay careful attention to the STP configuration
and its effect on the forwarding of VLAN traffic.
Figure 8-1 illustrates a network that uses VLAN tagging for trunk connections. The
following four VLANs have been defined:
• Sales is defined on Switch A, Switch B, and Switch M.
• Personnel is defined on Switch A, Switch B, and Switch M.
• Manufacturing is defined on Switch Y, Switch Z, and Switch M.
• Engineering is defined on Switch Y, Switch Z, and Switch M.
• Marketing is defined on all switches (Switch A, Switch B, Switch Y, Switch Z, and
Switch M).
Two STPDs are defined:
• STPD1 contains VLANs Sales and Personnel.
• STPD2 contains VLANs Manufacturing and Engineering.
The VLAN Marketing is a member of the default STPD, but not assigned to either
STPD1 or STPD2.