Configuring Stp; Using The Bpdu Filter To Disable Stp Or Rstp - HP ProCurve 7000dl Series Basic Management And Configuration Manual

Maximum Age Timer. BPDUs include a maximum age timer. Devices dis-
card information received from a BPDU when this timer expires. With STP,
the timer determines how long a device will wait to receive information about
a connection from the root before assuming the connection is down.

Configuring STP

It is highly recommended that you implement RSTP, which can reduce net-
work convergence time from more than a minute to less than a second. RSTP
is fully compatible with STP, so the router can use it even when some devices
on the local network only run STP. When an interface detects STP BPDUs, the
router implements STP on that interface. (RSTP improvements will not be
enabled for that segment of the network.)
However, the ProCurve Secure Router does support STP, if, for whatever
reason, you decide to implement it.
To configure STP, you must:
change the spanning tree version to STP
Move to the global configuration mode context and enter this command:
ProCurve(config)# spanning-tree mode stp
Syntax: spanning-tree mode [stp | rstp]
You can also:
set the router's priority to influence the election of the root device
set link cost to influence the selection of a link
alter STP timers
You configure these options exactly as you would for RSTP. See "Determining
Which Device Becomes Root: Setting the Router's Priority" on page 10-18,
"Determining Which Links Are Chosen: Setting Link Cost" on page 10-18, and
"Altering Timers" on page 10-22. When deciding on the root device, remember
that it will be the only device to periodically flood BDPU.

Using the BPDU Filter to Disable STP or RSTP

The BPDU filter prevents interfaces from receiving and transmitting BPDUs.
With it, you can remove the entire router from the spanning tree or you can
remove a single interface.
Bridging—Transmitting Non-IP Traffic or Merging Two Networks
Configuring Spanning Tree
10-23