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.

BIG-IP 2016-03-14 net stp-globals(1)