Specifications

DGS-3048 Layer 2 Switch CLI Reference Manual

config stp

become the Root Bridge. The user may choose a time between 6

and 40 seconds. The default value is 20.

maxhops <value 1-20> - The number of hops between devices in

a spanning tree region before the BPDU (bridge protocol data

unit) packet sent by the Switch will be discarded. Each switch on

the hop count will reduce the hop count by one until the value

reaches zero. The Switch will then discard the BDPU packet and

the information held for the port will age out. The user may set a

hop count from 1 to 20. The default is 20.

hellotime <value 1-10> − The user may set the time interval

between transmission of configuration messages by the root

device in STP, or by the designated router in RSTP, thus stating

that the Switch is still functioning. A time between 1 and 10

seconds may be chosen, with a default setting of 2 seconds.

In MSTP, the spanning tree is configured by port and

therefore, the hellotime must be set using the configure stp ports

command for switches utilizing the Multiple Spanning Tree

Protocol.

forwarddelay <value 4-30> − The maximum amount of time (in

seconds) that the root device will wait before changing states. The

user may choose a time between 4 and 30 seconds. The default is

15 seconds.

fbpdu [enable | disable] − Allows the forwarding of STP BPDU

packets from other network devices when STP is disabled on the

Switch. The default is enable.

Restrictions Only administrator-level users can issue this command.

Example usage:

To configure STP with maxage 18 and maxhops of 15:

DGS3048#config stp maxage 18 maxhops 15

Command: config stp maxage 18 maxhops 15

Success.

DGS3048#

config stp ports

Purpose Used to setup STP on the port level.

Syntax

config stp ports <portlist> {externalCost [auto | <value 1-

state [enable | disable]}

Description This command is used to create and configure STP for a group of

ports.

Parameters

<portlist> − Specifies a range of ports to be configured. The port

list is specified by listing the lowest switch number and the

beginning port number on that switch, separated by a colon. Then

the highest switch number, and the highest port number of the