3com S7906E Guide De Référence

 

1-37 

packet-number: Maximum number of MSTP packets that the port(s) can send within each hello time, 

namely the maximum transmission rate of the port, in the range of 1 to 255.  

Use the stp transmit-limit command to set the maximum transmission rate of the port(s).  

Use the undo stp transmit-limit command to restore the system default.  

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

Note that: 

z 

Configured in port view, the setting takes effect on the current port only; configured in port group 

view, the setting takes effect on all ports in the port group.  

z 

Configured in Layer-2 aggregate port view, the setting takes effect only on the aggregate port. 

Configured on the member port in an aggregation group, the setting can take effect only after the 

port leaves the aggregation group. For detailed information about link aggregation, refer to Link 

Aggregation Configuration in the Access Volume.  

z 

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 excessive bandwidth resources 

during network topology changes.  

# Set the maximum transmission rate of port GigabitEthernet 2/0/1 to 5.  

<Sysname> system-view 

[Sysname] interface GigabitEthernet 2/0/1 

[Sysname-GigabitEthernet2/0/1] stp transmit-limit 5 

vlan-mapping modulo modulo 

MST region view 

2: System level 

modulo: Modulo value, ranging from 1 to 31.  

Use the vlan-mapping modulo command to map VLANs in the current MST region to MSTIs 

according to the specified modulo value.  

By default, all VLANs are mapped to the CIST (MSTI 0).