Главная
Skipped breadcrumb items
QSW-8200-28T-AC
Команды для mstp Страница: 18

Главная
Qtech
QSW-8200-28T-AC
Команды для mstp Страница: 18

Qtech QSW-8200-28T-AC — настройка команд MSTP для управления топологией сети [18/23]

Превью страниц Страница 18 / 23

Qtech QSW-8200-52T-AC-DC Команды для mstp онлайн [18/23] 481624

User Manual

Chapter 1. Commands for MSTP 18

www.qtech.ru

received from a rootguard port, MSTP did not recalculate spanning-tree, and just set

the status of the port to be root_inconsistent (blocked). If no superior BPDU packet is

received from a blocked rootguard port, the port status will restore to be forwarding.

The rootguard function can maintain a relative stable spanning-tree topology when a

new switch is added to the network.

 Example: Set the port 1 is root port.

 Switch(Config-If-Ethernet1/0/1)#spanning-tree rootguard

1.1.30 spanning-tree tcflush (Global mode)

 Command: spanning-tree tcflush {enable| disable| protect}

 no spanning-tree tcflush

 Function: Configure the spanning-tree flush mode once the topology changes. “no

spanning-tree tcflush” restores to default setting.

 Parameter: enable: The spanning-tree flush once the topology changes.

 disable: The spanning tree don’t flush when the topology changes.

 protect: the spanning-tree flush not more than one time every ten

seconds.

 Command mode: Global mode

 Default: Enable

 Usage Guide: According to MSTP, when topology changes, the port that send change

message clears MAC/ARP table (FLUSH). In fact it is not needed for some network

environment to do FLUSH with every topology change. At the same time, as a method

to avoid network assault, we allow the network administrator to configure FLUSH mode

by the command

 Note: For the complicated network, especially need to switch from one spanning tree

branch to another rapidly, the disable mode is not recommended.

 Example: Configure the spanning-tree flush mode once the topology changes is not

flush to TC.

 Switch(config)#spanning-tree tcflush disable

 Switch(config)#

1.1.31 spanning-tree tcflush (Port mode)

 Command: spanning-tree tcflush {enable| disable| protect}

 no spanning-tree tcflush

 Function: Configure the spanning-tree flush mode for port once the topology changes.

“no spanning-tree tcflush” restores to default setting.

 Parameter: enable: The spanning-tree flush once the topology changes.

 disable: The spanning tree don’t flush when the topology changes.

 protect: the spanning-tree flush not more than one time every ten

seconds.

 Command mode: Port Mode

 Default: Global configuration

Qtech QSW-8200-28T-AC — настройка команд MSTP для управления топологией сети [18/23]

Содержание

Похожие устройства