Filter
Top Products
Configuring Spanning Tree Protocol (STP)
4. Select the Save
link at the bottom of the panel. Select Yes when prompted to save the configuration change
to the startup-config file on the device’s flash memory.
Excluding Specific Ports from Fast Port Span
You can exclude individual ports from Fast Port Span while leaving Fast Port Span enabled globally. To do so, use
one of the following methods.
USING THE CLI
To exclude a port from Fast Port Span, enter commands such as the following:
HP9300(config)# fast port-span exclude ethernet 1/1
HP9300(config)# write memory
To exclude a set of ports from Fast Port Span, enter commands such as the following:
HP9300(config)# fast port-span exclude ethernet 1/1 ethernet 2/1 ethernet 3/2
HP9300(config)# write memory
To exclude a contiguous (unbroken) range of ports from Fast Span, enter commands such as the following:
HP9300(config)# fast port-span exclude ethernet 1/1 to 1/24
HP9300(config)# write memory
Syntax: [no] fast port-span [exclude ethernet <portnum> [ethernet <portnum>… | to <portnum>]]
To re-enable Fast Port Span on a port, enter a command such as the following:
HP9300(config)# no fast port-span exclude ethernet 1/1
HP9300(config)# write memory
This command re-enables Fast Port Span on port 1/1 only and does not re-enable Fast Port Span on other
excluded ports. You also can re-enable Fast Port Span on a list or range of ports using the syntax shown above
this example.
To re-enable Fast Port Span on all excluded ports, disable and then re-enable Fast Port Span by entering the
following commands:
HP9300(config)# no fast port-span
HP9300(config)# fast port-span
HP9300(config)# write memory
Disabling and then re-enabling Fast Port Span clears the exclude settings and thus enables Fast Port Span on all
eligible ports. To make sure Fast Port Span remains enabled on the ports following a system reset, save the
configuration changes to the startup-config file after you re-enable Fast Port Span. Otherwise, when the system
resets, those ports will again be excluded from Fast Port Span.
USING THE WEB MANAGEMENT INTERFACE
You cannot exclude individual ports from Fast Span using the Web management interface.
Fast Uplink Span
The Fast Port Span feature described in the previous section enhances STP performance for end stations. The
Fast Uplink feature enhances STP performance for wiring closet switches with redundant uplinks. Using the
default value for the standard STP forward delay, convergence following a transition from an active link to a
redundant link can take 30 seconds (15 seconds for listening and an additional 15 seconds for learning).
You can use the Fast Uplink feature on an HP device deployed as a wiring closet switch to decrease the
convergence time for the uplink ports to another device to just four seconds (two seconds for listening and two
seconds for learning). The wiring closet switch must be an HP device but the device at the other end of the link
can be an HP device or another vendor’s switch. Configuration of the Fast Uplink Span feature takes place
entirely on the HP device.
To configure the Fast Uplink Span feature, specify a group of ports that have redundant uplinks on the wiring
closet switch (HP device) as members of a Fast Uplink Group. If the active link becomes unavailable, the Fast
Uplink Span feature transitions the forwarding to one of the other ports in four seconds. You can configure one
5 - 15