net stp-globals
net stp-globals(1) BIG-IP TMSH Manual net stp-globals(1)
NAME
stp-globals - Configures spanning tree protocols on the system.
MODULE
net
SYNTAX
Configure the stp-globals component within the net module using the
syntax shown in the following sections.
MODIFY
modify stp-globals
options:
config-name [configuration name]
config-revision [integer]
description [string]
fwd-delay [integer]
hello-time [integer]
max-age [integer]
max-hops [integer]
mode [disabled | mstp | passthru | rstp | stp]
transmit-hold [integer]
edit stp-globals
options:
all-properties
non-default-properties
DISPLAY
list stp-globals
show running-config stp-globals
options:
all-properties
non-default-properties
one-line
DESCRIPTION
Provides the ability to configure spanning tree protocols for the
traffic management system. Spanning tree protocols are Layer 2
protocols for preventing bridging loops. The system supports multiple
spanning tree protocol (MSTP), rapid spanning tree protocol (RSTP), and
spanning tree protocol (STP).
EXAMPLES
modify stp-globals mode passthru
Sets the STP mode to passthru. Passthru mode forwards spanning tree
bridge protocol data units (BPDUs) received on any interface to all
other interfaces.
modify stp-globals mode disabled
Sets the STP mode to disabled. No MSTP, RSTP, or STP packets are
transmitted or received on the interface or trunk, and the spanning
tree algorithm exerts no control over forwarding or learning on the
port or the trunk.
OPTIONS
config-name
Specifies the configuration name (1 - 32 characters in length)
only when the spanning tree mode is MSTP. The default
configuration name is a string representation of a globally unique
MAC address belonging to the traffic management system.
The MSTP standard introduces the concept of spanning tree regions,
which are groups of adjacent bridges with identical configuration
names, configuration revision levels, and assignments of VLANs to
spanning tree instances.
Note: The system default configuration name is a string
representation of the globally unique MAC address of the traffic
management system in which hyphens replace the colons in the
standard MAC address. For example, the default configuration name
00-01-D7-68-11-80, represents the MAC address 00:01:D7:68:11:80.
config-revision
Specifies the revision level of the MSTP configuration only when
the value of the mode option is mstp. The specified number must be
in the range 0 through 65535. The default value is 0 (zero).
description
User defined description.
fwd-delay
In the original STP, the forward delay parameter controlled the
number of seconds for which an interface was blocked from
forwarding network traffic after a reconfiguration of the spanning
tree topology. This parameter has no effect when RSTP or MSTP are
used, as long as all bridges in the spanning tree use the RSTP or
MSTP protocol. If any legacy STP bridges are present, then
neighboring bridges must fall back to the old protocol, whose
reconfiguration time is affected by the value of the fwd-delay
option. The default value is 15 seconds, and the valid range is 4
to 30.
hello-time
Specifies the time interval in seconds between the periodic
transmissions that communicate spanning tree information to the
adjacent bridges in the network. The default value is 2 seconds,
and the valid range is 1 - 10. The default value is optimal in
virtually all cases. F5 Networks recommends that you do not change
the value of the hello-time option.
max-age
Specifies the number of seconds for which spanning tree
information received from other bridges is considered valid. The
default value is 20 seconds, and the valid range is 6-40 seconds.
max-hops
Specifies the maximum number of hops an MSTP packet can travel
before it is discarded. Use this option only when the value of the
mode option is mstp. The number of hops must be in the range of 1
to 255 hops. The default number of hops is 20.
mode Specifies one of three spanning tree modes:
disabled
Specifies to discard spanning tree bridge protocol data units
(BPDUs) received on any interface.
mstp Specifies multiple spanning tree protocol.
passthru
Forwards spanning tree bridge protocol data units (BPDUs)
received on any interface to all other interfaces.
Essentially, passthru mode makes the traffic management
system transparent to spanning tree BPDUs. This is the system
default.
rstp Specifies rapid spanning tree protocol (RSTP) converges to a
fully-connected state quickly.
stp The system supports STP mode for legacy systems. If STP is
detected in the network, the traffic management system
changes to STP mode even when the mode option is set to
disabled, mstp, or rstp.
transmit hold
Specifies the absolute limit on the number of spanning tree
protocol packets the traffic management system may transmit on a
port in any hello-time interval. It is used to ensure that
spanning tree packets do not unduly load the network even in
unstable situations. The default value is 6 packets, and the valid
range is 1 through 10 packets.
SEE ALSO
edit, interface, list, modify, show, tmsh
COPYRIGHT
No part of this program may be reproduced or transmitted in any form or
by any means, electronic or mechanical, including photocopying,
recording, or information storage and retrieval systems, for any
purpose other than the purchaser's personal use, without the express
written permission of F5 Networks, Inc.
F5 Networks and BIG-IP (c) Copyright 2008-2010, 2013, 2016. All rights
reserved.
BIG-IP 2016-03-14 net stp-globals(1)