Spanning Tree Commands
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mst vlan
This command adds VLANs to a spanning tree instance. Use the
no
form to remove
the specified VLANs. Using the
no
form without any VLAN parameters to remove all
VLANs.
Syntax
[
no
]
mst
instance_id
vlan
vlan-range
•
instance_id
- Instance identifier of the spanning tree. (Range: 0-4094)
•
vlan-range
- Range of VLANs. (Range: 1-4093)
Default Setting
none
Command Mode
MST Configuration
Command Usage
• Use this command to group VLANs into spanning tree instances. MSTP
generates a unique spanning tree for each instance. This provides multiple
pathways across the network, thereby balancing the traffic load, preventing
wide-scale disruption when a bridge node in a single instance fails, and
allowing for faster convergence of a new topology for the failed instance.
• By default all VLANs are assigned to the Internal Spanning Tree (MSTI 0) that
connects all bridges and LANs within the MST region. This switch supports up
to 33 instances. You should try to group VLANs which cover the same general
area of your network. However, remember that you must configure all bridges
within the same MSTI Region (page 4-168) with the same set of instances,
and the same instance (on each bridge) with the same set of VLANs. Also,
note that RSTP treats each MSTI region as a single node, connecting all
regions to the Common Spanning Tree.
Example
Console(config-mstp)#mst 1 vlan 2-5
Console(config-mstp)#
Summary of Contents for 24/48 10/100 Ports + 2GE
Page 2: ......
Page 4: ...ES3526XA ES3552XA F2 2 6 3 E122006 CS R02 149100005500H...
Page 18: ...Contents xiv...
Page 22: ...Tables xviii...
Page 26: ...Figures xxii...
Page 34: ...Introduction 1 8 1...
Page 44: ...Initial Configuration 2 10 2...
Page 242: ...Configuring the Switch 3 198 3...
Page 498: ...Software Specifications A 4 A...
Page 511: ......
Page 512: ...ES3526XA ES3552XA E122006 CS R02D 149100005500H...