Siemens S223 User Manual

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UMN:CLI                                                                                                                                                              User  Manual 
SURPASS hiD 6615 S223/S323 R1.5 
220                                                                         A50010-Y3-C150-2-7619 
To clear configured Restarting Protocol Migration, use the following command. 
Command Mode 
Description 
stp clear-detected-protocol
 
PORTS
 
Bridge 
Configures restarting protocol migration function. 
 
 
8.3.9 
Bridge Protocol Data Unit Configuration 
Bridge Protocol Data Unit (BPDU) is a transmission message in LAN in order to configure, 
maintain the configuration for STP/RSTP/MSTP. Switches that STP is configured ex-
change their information BPDU to find best path. MSTP BPDU is general STP BPDU hav-
ing additional MST data on it’s end. MSTP part of BPDU does not rest when it is out of 
Region. 
 
Hello Time
 
 
Hello time decides an interval time when a switch transmits BPDU. It can be config-
 
ured from 1 to 10 seconds. The default is 2 seconds. 
 
Max Age
 
 
Root switch transmits new information every time based on information from another 
 
switches. However, if there are many switches on network, it takes lots of time to 
 
transmit BPDU. And if network status is changed while transmitting BPDU, this in
 
formation is useless. To get rid of useless information, max age is identified in each 
 information. 
 
Forward Delay
 
 
Switches find location of another switches connected to LAN though received BPDU 
 
and transmit packets. Since it takes certain time to receive BPDU and find the loca-
 
tion before transmitting packet, switches send packet at regular interval. This interval 
 
time is named forward delay. 
The configuration for BPDU is applied as selected in force-version. The same commands 
are used for STP, RSTP, MSTP, PVSTP and PVRSTP. 
 
8.3.9.1 Hello 
Time 
Hello time decides an interval time when a switch transmits BPDU. To configure hello 
time, use the following command. 
Command Mode 
Description 
stp mst hello-time
 <1-10> 
Configures hello time to transmit the message in STP, 
RSTP and MSTP: 
1-10: set the hello time. (default: 2) 
stp pvst hello-time
 
VLAN-RANGE
 <1-10> 
Bridge 
Configures hello time to transmit the message in 
PVSTP and PVRSTP: 
1-10: set the hello time. (default: 2) 
 
 
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