3Com MSR 30, MSR 50 Stp transmit-limit, Vlan-mapping modulo, Syntax vlan-mapping modulo modulo

628CHAPTER 38: MSTP CONFIGURATION COMMANDS

<Sysname> system-view

[Sysname] stp timer-factor 7

stp transmit-limit

Syntax stp transmit-limit packet-number

undo stp transmit-limit

View Ethernet interface view, port group view

Parameters packet-number: Maximum number of MSTP packets that the port can send within each hello time, namely the maximum transmission rate of the port, in the range of 1 to 255.

Description Use the stp transmit-limitcommand to set the maximum transmission rate of a port or a group of ports.

Use the undo stp transmit-limitcommand to restore the maximum transmission rate of a port or a group of ports to the default setting.

By default, the maximum transmission rate of all ports of the device is 10.

Note that:

■Configured in Ethernet interface view, the setting is effective on the current port only; configured in port group view, the setting is effective on all the ports in the port group.

■A larger maximum transmission rate value represents more MSTP packets that the port will send within each hello time, but this means that more device resources will be used. An appropriate maximum transmission rate setting can prevent MSTP from using an excessive bandwidth resource during network topology instability.

Examples # Set the maximum transmission rate of port Ethernet 1/1 to 5.

<Sysname> system-view

[Sysname] interface Ethernet 1/1

[Sysname-Ethernet1/1] stp transmit-limit 5

vlan-mapping modulo

Syntax vlan-mapping modulo modulo

View MST region view

Parameters modulo: Modulo value, in the range of 1 to 15.