Allied Telesis SwitchBlade x3100 Series Manual page 402

Introduction
0.2
V_80
0.1
4.5.8.2 Provisioning Parameters
Many of the commands and parameters for MSTP are similar to (R)STP, since the user is still creating an (R)STP
instance that must go through a convergence process. However, some parameters are unique for MSTP, or
some value for a common parameter is different, and these are highlighted.
Following are the key parameters that are data filled for (R)STP; for each there is a summary for the parameter
(or a reference to an earlier subsection, especially 4.5.3.6), and how MSTP uses the parameter.
4-82
Software Reference for SwitchBlade x3100 Series Switches (Layer Two Switching)
= Physical Link
= MST Instance 1 (V_60)
= MST Instance 2 (V_80)
= MST Region 1
V_60
1
MST Region 1
Regional
A
Root
V_60
Bridge
1
MSTI 2
2
V_60
Concept of an MSTP Region
FIGURE 4-8
Multiple Spanning Tree Protocol (MSTP)
Root
Bridge
CIST
V_60
V_80
0.3
V_80
A
4
Regional
Root
D = Devices
Bridge
MSTI 1
= Links
4
3
C
V_80
= Network Spanning
Tree Instance
= VLAN on MST
Instance 2 blocked
= VLAN on MST
Instance 1 blocked
V_60
V_80
0.1
V_60
V_80
0.2
MSTP_Region_concept