3Com 5500 SI - Switch - Stackable, Configuration Manual

Page: 176 / 686

176 C
HAPTER
13: MSTP C
ONFIGURATION
Configuration procedure in system view
Configuration procedure in Ethernet port view
You can configure the maximum transmission speed of ports with either of the above
two methods.
A too high maximum transmission speed can cause too many MSTP BPDUs
transmitted in each Hello time interval, resulting in waste of network resources. The
default is recommended.
Configuration example
Set the maximum transmission speed of interface Ethernet1/0/1 to 5.
1 Configure in system view.
<S5500> system-view
System View: return to User View with Ctrl+Z.
[S5500] stp interface ethernet1/0/1 transmit-limit 5
2 Configure in Ethernet port view.
<S5500> system-view
System View: return to User View with Ctrl+Z.
[S5500] interface ethernet1/0/1
[S5500-Ethernet1/0/1] stp transmit-l
Setting a Port as an Edge
Port
Edge ports are ports that do not have any switches connected to them directly or
through networks. After a port is configured to be an edge port, the port can perform
rapid transition, that is, it can move from the blocking state to the forwarding state
without waiting for the delay timer to time out.
You can configure a port to be an edge port or non-edge port in either system view or
Ethernet port view.
Table 151 Configure the maximum transmission speed of specified ports in system view
Operation Command Description
Enter system view system-view -
Configure the maximum
transmission speed of
specified ports stp interface interface-list
transmit-limit packetnum
Required
The maximum transmission speed
of all Ethernet ports on a switch
defaults to 3.
Table 152 Configure the maximum transmission speed in Ethernet port view
Operation Command Description
Enter system view system-view -
Enter Ethernet port
view interface interface-type
interface-number
-
Configure the
maximum
transmission speed of
the port stp transmit-limit packetnum Required
The maximum transmission speed of
all Ethernet ports on a switch defaults
to 3.