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spanning-tree enable

This command enables STP on the device globally in the CONFIG mode and on certain interfaces in configuration modes of interfaces (FRONT-PORT, PORT-CHANNEL). The use of the negative form of the command (no) denies the use of STP feature.

Syntax

[no] spanning-tree enable

Parameters

The command contains no arguments.

Command mode

CONFIGURE

FRONT-PORT

PORT-CHANNEL

Example

ma4000(config)# spanning-tree enable

STP feature enabled.

spanning-tree fdelay

This command sets the delay time for data transmission. Forwarding delay is the time, during which the interface remains in 'Listening' and 'Learning' states prior to going into 'Forwarding' state.

The use of the negative form of the command (no) sets the default data transmission delay time.

Syntax

spanning-tree fdelay <DELAY>
no spanning-tree fdelay

Parameters

<DELAY> – data transmission delay time, [4 .. 30] seconds.

Default value

15 seconds

Command mode

CONFIG

Example

ma4000(config)# spanning-tree fdelay 20

spanning-tree hello¹

This command sets the time of sending hello-packages.
The exchange of hello-packets is carried out between the Root Bridge and dedicated bridges (Designated Bridges) and serves to exchange information on the topology of the entire switched local network.

The use of the negative form of the command (no) sets the default hello packets sending time.

Syntax

spanning-tree hello <TIME>
no spanning-tree hello

Parameters

<TIME> – hello packets sending time.

Default value

2

Command mode

CONFIG

Example

ma4000(config)# spanning-tree hello 2

¹In the current firmware version this parameter can not be changed. Default value is 2.

spanning-tree holdcount

This command sets the maximum number of BPDU packets the device can receive within a second.

The use of the negative form of the command (no) sets the default maximum number of BPDU packets the device can receive within a second.

Syntax

spanning-tree holdcount <COUNT>
no spanning-tree holdcount

Parameters

<COUNT> – number of BPDU packets, may take values [1 .. 10].

Default value

6

Command mode

CONFIG

Example

ma4000(config)# spanning-tree holdcount 5

spanning-tree maxage

This command sets the value of BPDU packet waiting timer.

The use of the negative form of the command (no) sets the default value of BPDU packet waiting timer.

Syntax

spanning-tree maxage <TIME>
no spanning-tree maxage

Parameters

<TIME> – BPDU packet waiting time, may take values [6 .. 40].

Default value

20

Command mode

CONFIG

Example

ma4000(config)# no spanning-tree maxage 15

spanning-tree mode

This command sets the type of the spanningtree protocol: STP, RSTP, MST.

The use of a negative form (no) of the command sets RSTP (default value).

Syntax

spanning-tree mode <MODE>
no spanning-tree mode

Parameters

<MODE> – protocol type:

stp – IEEE 802.1D Spanning Tree Protocol;
rstp – IEEE 802.1W Rapid Spanning Tree Protocol;
mstp – IEEE 802.1S Multiple Spanning Tree Protocol.

Default value

RSTP

Command mode

CONFIG

Example

ma4000(config)# spanning-tree mode rstp

spanning-tree bpdu

The command is used to set the BPDU packet processing mode by the interface with STP disabled.

The use of a negative form (no) of the command sets the default value.

Syntax

spanning-tree bpdu <MODE>

Parameters

<MODE> – processing method:

filtering – BPDU packets are filtrated on the interface with disabled STP;
flooding – untagged BPDU packets are transmitted on the interface with disabled STP, tagged ones are filtrated.

Default value

flooding

Command mode

CONFIG

Example

ma4000(config)# spanning-tree bpdu flooding

spanning-tree priority

This command in the mode PP4X CONFIGURE sets the bridge priority of the binding tree STP, (0-65535). The root switch is assigned a lower priority switch. 32768 is set by default. The priority value should be a multiple of 4096.

This command in the FRONT-PORT, PORT-CHANNEL configuration mode sets the interface priority in the STP, (0-240). The priority value should be a multiple of 16. 128 is set by default.

The use of a negative form (no) of the command sets the default STP operation priority.

Syntax

spanning-tree priority <PRIORITY>
no spanning-tree priority

Parameters

<PRIORITY > – priority;

In CONFIG mode takes the value [0...65535], which should be a multiple of 4096;

In FRONT-PORT modes, PORT-CHANNEL takes [0...240], which should be a multiple of 16.

Default value

in CONFIG mode – 32768;

in FRONT-PORT, PORT-CHANNEL mode – 128.

Command mode

CONFIG

FRONT-PORT

PORT-CHANNEL

Example

ma4000(front-port-2/5)# spanning-tree priority 128

Priority 128 is set.

spanning-tree pathcost

This command sets the value of the STP path for the configurable port.

The use of a negative form (no) of the command sets the default path cost value.

Syntax

spanning-tree pathcost <PATHCOST>
no spanning-treepath cost

Parameters

<PATHCOST> – path cost, may take values [0.. 200000000].

Default value

0

Command mode

FRONT-PORT

PORT-CHANNEL

Example

ma4000(front-port-2/5)# spanning-tree pathcost 1

Path cost 1 is set.

spanning-tree admin-edge

This command sets the connection type as an edge link to the host. In this case, data transmission is enabled automatically for the port, when the link is established.

The use of a negative form (no) of the command restores the default value.

Syntax

[no] spanning-tree admin-edge

Parameters

The command contains no arguments.

Default value

disabled

Command mode

FRONT-PORT

PORT-CHANNEL

Example

ma4000(front-port-2/5)# spanning-tree admin-edge

For the configured port, the type of edgelink connection is enabled.

spanning-tree admin-p2p

This command defines the type of p2p connection definition.

The use of a negative form (no) of the command sets the default p2p connection definition type.

Syntax

spanning-tree admin-p2p <TYPE>
no spanning-tree admin-p2p

Parameters

<TYPE> – connection definition type:

auto – the definition is based on bpdu;
force-false – forced link as p2p;
force-true – forced link as a non p2p.

Default value

auto

Command mode

FRONT-PORT

PORT-CHANNEL

Example

ma4000(front-port-2/5)# spanning-tree admin-p2p auto

For the configured port, the connection type p2p is defined on the basis of bdpu.

spanning-tree auto-edge

This command sets the automatic bridge detection on the configured interface/interfaces.

The use of a negative form (no) of the disables automatic bridge detection on the configured interface/interfaces.

Syntax

[no] spanning-tree auto-edge

Default value

enabled

Parameters

The command contains no arguments.

Command mode

FRONT-PORT

PORT-CHANNEL

Example

ma4000(front-port-2/5)# spanning-tree auto-edge

The automatic bridge detection feature is enabled.

spanning-tree mst configuration

Switch to mst configuration mode.

Syntax

spanning-tree mst configuration

Parameters

The command contains no arguments.

Command mode

CONFIG

Example

ma4000(config)# spanning-tree mst configuration

spanning-tree mst instance priority

This command allows you to set a priority for this access node over others that use a shared MSTP instance. The value should be a multiple of 4096.

The use of a negative form (no) of the command sets the default priority value.

Syntax

[no] spanning-tree mst instance priority <INSTANCE> <PRIORITY>

Parameters

<INSTANCE> – MSTP instance ID, may take values [1..15];

<PRIORITY> – priority, may take values in the range [0..61440], the value should be a multiple of 4096.

Default value

32768

Command mode

CONFIG

Example

ma4000(config)# spanning-tree mst instance

spanning-tree mst max-hops

The command sets the maximum amount of hops for BPDU packet that are required to build a tree and to keep its structure information. If the packet has already passed the maximum amount of hops, it is dropped on the next hop.

The use of a negative form (no) of the command sets the default value.

Syntax

[no] spanning-tree mst max-hops <COUNT>

Parameters

<COUNT> – maximum amount of hops, may take values [6..40].

Command mode

CONFIG

Example

ma4000(config)# spanning-tree mst max-hops

show spanning-tree active

This command allows to view the STP status on the device stack. If you specify the instance command, you can view the STP status for a specific MSTP instance identifier.

Syntax

show spanning-tree active [instance <INSTANCE>]

Parameters

<INSTANCE> – MSTP instance ID, may take values [1..15].

Command mode

ROOT

Example

ma4000# show spanning-tree active 
spanning tree: off

show spanning-tree bridge

The command is used to view the bridge status. If you specify the instance command, you can view the bridge status for a specific MSTP instance identifier.

Syntax

show spanning-tree bridge [instance <INSTANCE>]

Parameters

<INSTANCE> – MSTP instance ID, may take values [1..15].

Command mode

ROOT

Example

ma4000# show spanning-tree bridge 
Cannot get spanning-tree status

show spanning-tree interface

This command allows to view the STP status for the specified interface range.

Syntax

show spanning-tree interface <INTERFACE> <RANGE>

Parameters

<INTERFACE> – interface type: front-port; gpon-port; ont; plc-front-port; plc-mgmt-pon-port; plc-pon-port; plc-slot-channel; plc-slot-port; port-channel; slot-channel; slot-port; stack-port. The description of interfaces is given in Table 4.1.

<RANGE> – interface number. The range of values and numbering rules are described in Table 4.1. If you specify the value 'all' in the command, all interfaces of the given type will be specified.

You may specify the list of numbers using comma ( , ) or specify the range using hyphen ( - ).

Command mode

ROOT

Example

ma4000# show spanning-tree interface front-port 1/0-1
spanning tree: off

show spanning-tree bpdu

The command is used to view the way BPDU packets are processed for interfaces where STP function is disabled.

Syntax

show spanning-tree bpdu

Parameters

The command contains no arguments.

Command mode

ROOT

Example

ma4000# show spanning-tree bpdu 
Global: flooding

show spanning-tree mst-configuration

This command is used to view information about configured MSTP instances.

Syntax

show spanning-tree mst-configuration

Parameters

The command contains no arguments.

Command mode

ROOT

Example

ma4000# show spanning-tree mst-configuration 
Name: 
Revision: 0

   MST Configuration
   ~~~~~~~~~~~~~~~~~
Inst   State      Mapped Vlans                                                   
----   --------   ------------------------------------------------------------   
0      enabled    1, 30, 200

spanning-tree enable

Syntax

Parameters

Command mode

Example

spanning-tree fdelay

Syntax

Parameters

Default value

Command mode

Example

spanning-tree hello1

Syntax

Parameters

Default value

Command mode

Example

spanning-tree holdcount

Syntax

Parameters

Default value

Command mode

Example

spanning-tree maxage

Syntax

Parameters

Default value

Command mode

Example

spanning-tree mode

Syntax

Parameters

Default value

Command mode

Example

spanning-tree bpdu

Syntax

Parameters

Default value

Command mode

Example

spanning-tree priority

Syntax

Parameters

Default value

Command mode

Example

spanning-tree pathcost

Syntax

Parameters

Default value

Command mode

Example

spanning-tree admin-edge

Syntax

Parameters

Default value

Command mode

Example

spanning-tree admin-p2p

Syntax

Parameters

Default value

Command mode

Example

spanning-tree auto-edge

Syntax

Default value

Parameters

Command mode

Example

spanning-tree mst configuration

Syntax

Parameters

Command mode

Example

spanning-tree mst instance priority

Syntax

Parameters

Default value

spanning-tree hello¹