3com 8807 사용자 가이드
148
C
HAPTER
17: MSTP R
EGION
-
CONFIGURATION
operation till the specified interval is reached. This can avoid frequent delete
operations on the MAC address table and ARP table.
operations on the MAC address table and ARP table.
You can use the following command to configure the protection functions of the
switch.
switch.
Perform the following configuration in corresponding configuration modes.
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CAUTION: If the equipment connected to the port of the switch cannot send STP
packets to the switch, do not configure the loop-protection command.
Otherwise, the port may be congested for a long time.
packets to the switch, do not configure the loop-protection command.
Otherwise, the port may be congested for a long time.
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CAUTION: For a port that fails to receive the BPDU packets from the opposite
peer, there are several situations:
peer, there are several situations:
■
If you are not sure that STP is enabled on the opposite peer, it is not
recommended to carry out the stp loop-protection command on this port.
recommended to carry out the stp loop-protection command on this port.
■
If the port is a root port or an alternate port, you can carry out the stp
loop-protection command.
loop-protection command.
■
The port is a designated port on a domain border and the stp loop-protection
command is carried out on this port. If the number of instances on this port is
greater than that on the opposite peer port, the port state on another instance
and the port state on instance 0 are the same.
command is carried out on this port. If the number of instances on this port is
greater than that on the opposite peer port, the port state on another instance
and the port state on instance 0 are the same.
■
Carry out the stp loop-protection command on the designated upstream
port. If the downstream port does not contain the VLAN of the designated
port. If the downstream port does not contain the VLAN of the designated
Table 131 Configure the switch protection function
Operation
Command
Configure BPDU protection of the switch
(from system view)
(from system view)
stp bpdu-protection
Restore the disabled BPDU protection state as
defaulted (from system view)
defaulted (from system view)
undo stp bpdu-protection
Configure Root protection of the switch (from
system view)
system view)
stp interface interface-list root-protection
Restore the disabled Root protection state as
defaulted (from system view)
defaulted (from system view)
undo stp interface interface-list
root-protection
root-protection
Configure Root protection of the switch (from
Ethernet port view)
Ethernet port view)
stp root-protection
Restore the disabled Root protection state as
defaulted (from Ethernet port view)
defaulted (from Ethernet port view)
undo stp root-protection
Configure loop protection function of the
switch (from Ethernet port view)
switch (from Ethernet port view)
stp loop-protection
Restore the disabled loop protection state, as
defaulted (from Ethernet port view)
defaulted (from Ethernet port view)
stp loop-protection
Enable the loop protection function of the
switch (from system view)
switch (from system view)
stp interface interface-list loop-protection
Restore the disabled loop protection state, as
defaulted (from system view)
defaulted (from system view)
undo stp interface interface-list
loop-protection
loop-protection
Configure TC protection of the switch (from
system view)
system view)
stp tc-protection enable
Disable TC protection (from system view)
stp tc-protection disable