Zte ZXR10 2910E-PS Configuration Manual page 81

Port role
Backup
Alternate
Edged
BPDU protect function is for the protection of margin port. The margin port will not receive
the protocol message. If there exists vicious protocol attack or Linux virtual bridge,
receiving unlawful protocol message will bring to net shocking or topology changing
abnormally. The port will be closed after using the protection. After a while, to check the
net is normal or not. If it is normal, it will recover to original state.
Root protection is function is for the protection of root switch. In the network that needs to
appoint switch as root switch, if there exists vicious protocol attack or Linux virtual bridge,
it will bring the change to the root and net abnormal. After using the root protection of
the port, if the port receives the protocol information prior to root switch, it will transfer the
port to blocking state. This port no longer transmits message, and discards the received
protocol message to protect the status of the root switch.
Loop protection function is for the protection of loop net topology. In the network where
ring exists, redundant topology will be in the state of backup, and in the state of blocking
after the port is steady. If there is no need to transfer to transmission state, it is possible
to set port to loop protect. Once the port wants to transform, it will inspire loop protection
and set the port to blocking state.
When configuring one port, only one of the three protections can be configured: BPDU
protection, root protection and loop protection.
Configuring STP
In the default configuration, the MSTP only has the instance with ins_id as 0. This instance
always exists and users cannot manually delete it. This instance is mapped with VLANs 1
to 4094.
The STP configuration includes the following commands:
Command
zte(cfg)#set stp {enable | disable}
zte(cfg)#set stp forceversion {mstp | rstp | stp}
zte(cfg)#set stp port <portlist>{enable | disable}
zte(cfg)#set stp port <portlist> linktype {point-point | shared}
zte(cfg)#set stp port <portlist> packettype {IEEE | CISCO | HUAWEI |
HAMMER | extend }
zte(cfg)#set stp port <portlist> pcheck
SJ-20120409144109-002|2012-07-02(R1.0)
Chapter 4 Service Configuration
Port state
Discard
Discard
Forward
Function
Enables or disables STP.
Sets the forced STP type to
MSTP/RSTP/STP.
Enables or disables port stp function.
Sets port connection type.
Sets instance port packet type.
Checks the current STP protocol type
and selects the best protocol.
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