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Command Line Interface
4-284
4
Command Usage
The MST region name (page 4-283) and revision number are used to
designate a unique MST region. A bridge (i.e., spanning-tree compliant device
such as this switch) can only belong to one MST region. And all bridges in the
same region must be configured with the same MST instances.
Example
Related Commands
name (4-283)
This command configures the maximum number of hops in the region before a
BPDU is discarded. Use the
no
form to restore the default.
Syntax
max-hops
hop-number
hop-number
- Maximum hop number for multiple spanning tree.
(Range: 1-40)
Default Setting
20
Command Mode
MST Configuration
Command Usage
An MSTI region is treated as a single node by the STP and RSTP protocols.
Therefore, the message age for BPDUs inside an MSTI region is never
changed. However, each spanning tree instance within a region, and the
internal spanning tree (IST) that connects these instances use a hop count to
specify the maximum number of bridges that will propagate a BPDU. Each
bridge decrements the hop count by one before passing on the BPDU. When
the hop count reaches zero, the message is dropped.
Example
This command disables the spanning tree algorithm for the specified interface. Use
the
no
form to reenable the spanning tree algorithm for the specified interface.
Syntax
[
no
]
spanning-tree spanning-disabled
Console(config-mstp)#revision 1
Console(config-mstp)#
Console(config-mstp)#max-hops 30
Console(config-mstp)#
Summary of Contents for 6152PL2 FICHE
Page 2: ......
Page 6: ...vi ...
Page 8: ...viii ...
Page 32: ...Tables xxxii ...
Page 38: ...Figures xxxviii ...
Page 56: ...Initial Configuration 2 10 2 ...
Page 378: ...Configuring the Switch 3 322 3 ...
Page 817: ......