Siemens RUGGEDCOM ROX II User Manual page 565

RUGGEDCOM ROX II
CLI User Guide
Parameter
max-age { max-age }
tx-hold-count { tx-hold-count }
forward-delay { forward-delay }
max-hops { max-hops }
mst-region-name { mst-region-name }
mst-revision-level { mst-revision-level }
4. Configure the eRSTP settings by configuring the following parameter(s):
Parameter
max-net-diameter-multiplier { max-net-diameter-multiplier }
bpdu-guard { bpdu-guard }
Configuring STP Globally
Description
changes at the expense of moderate increases in STP traffic.
(Relationship : maxAgeTime >= 2 * (helloTime + 1.0 seconds))
Synopsis: An integer between 6 and 40
Default: 20
The time for which a configuration message remains valid after
being issued by the root bridge. Configure this parameter with
care when many tiers of bridges exist, or slow speed links (such
as those used in WANs) are part of the network. (Relationship :
maxAgeTime >= 2 * (helloTime + 1.0 seconds))
Synopsis: An integer between 0 and 100
Default: 0
The maximum number of configuration messages on each port
that may be sent in a special event, such as recovering from a
failure or bringing up a new link. After the maximum number of
messages is reached, Rapid Spanning Tree Protocol (RSTP)
will be limited to one message per second. Larger values allow
the network to recover from failed links more quickly. If RSTP is
being used in a ring architecture, the transmit count should be
larger than the number of switches in the ring. If a number is not
defined, the value is considered unlimited.
Synopsis: An integer between 4 and 30
Default: 15
The amount of time a bridge spends learning MAC addresses
on a rising port before beginning to forward traffic. Lower values
allow the port to reach the forwarding state more quickly, but at
the expense of flooding unlearned addresses to all ports.
Synopsis: An integer between 6 and 40
Default: 20
The maximum possible bridge diameter inside a Multiple
Spanning Tree (MST) region. MST BPDUs propagating inside
an MST region carry a time-to-live parameter decremented by
every switch that propagates the BPDU. If the maximum number
of hops inside the region exceeds the configured maximum, the
BPDUs may be discarded due to their time-to-live information.
This parameter is only applicable to Multiple Spanning Tree
Protocol (MSTP) configurations.
Synopsis: A string 1 to 32 characters long
The name of the MST region. All devices in the same MST region
must have the same region name configured
Synopsis: An integer between 0 and 65535
Default: 0
The revision level for the MST configuration. Typically, all devices
in the same MST region are configured with the same revision
level. However, different revision levels can be used to create
sub-regions under the same region name.
Description
Synopsis: { 1, 4 }
Default: 4
The Max Network Diameter as a multiplier of the MaxAgeTime
value.
Synopsis: { specify, noshutdown, untilreset }
Chapter 5
Setup and Configuration
527