R3721-F3210-F3171-HP High-End Firewalls Network Management Command Reference-6PW101

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Parameters
limit: Sets the maximum number of BPDUs the ports can send within each hello time, ranging from 1 to
255.
Description
Use stp transmit-limit to set the maximum transmission rate of the ports, which specifies the maximum
number of BPDUs the ports can send within each hello time.
Use undo stp transmit-limit to restore the default.
By default, the maximum transmission rate of all ports is 10. Each port can send up to 10 BPDUs within
each hello time.
Configured in Ethernet interface view, the setting takes effect on the interface only.
Configured in Layer 2 aggregate interface view, the setting takes effect only on the aggregate interface.
Configured on a member port in an aggregation group, the setting takes effect only after the port leaves
the aggregation group.
A larger maximum transmission rate value requires more system resources. An appropriate maximum
transmission rate setting can limit the speed at which a port sends BPDUs and prevent spanning tree
protocols from using excessive bandwidth resources during network topology changes. HP recommends
you to use the default value.
Examples
# Set the maximum transmission rate of port GigabitEthernet 0/1 to 5.
<Sysname> system-view
[Sysname] interface gigabitethernet 0/1
[Sysname-GigabitEthernet0/1] stp transmit-limit 5
vlan-mapping modulo
Syntax
vlan-mapping modulo modulo
View
MST region view
Default level
2: System level
Parameters
modulo: Sets the modulo value, ranging from 1 to 15.
Description
Use vlan-mapping modulo to map VLANs in the MST region to MSTIs according to the specified modulo
value, quickly creating a VLAN-to-instance mapping table.
By default, all VLANs are mapped to the CIST (MSTI 0).
You cannot map the same VLAN to different MSTIs. If you map a VLAN that has been mapped to an MSTI
to a new MSTI, the old mapping will be automatically removed.
This command maps each VLAN to the MSTI whose ID is (VLAN ID - 1) %modulo + 1, where (VLAN ID
- 1) %modulo is the modulo operation for (VLAN ID - 1). If the modulo value is 15, for example, then