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Parameters
instance instance-id
: Specifies an MSTI. The value of
instance-id
ranges from 0 to 16, where 0
represents the CIST. To enable or disable outputting port state transition information in STP/RSTP
mode, specify
instance 0
.
all
: Specifies all MSTIs.
vlan vlan-list
: Specifies a VLAN list in the format of
vlan-list
= {
vlan-id
[
to
vlan-id
] }&<1-10>, where
the
vlan-id
argument represents the VLAN ID, in the range of 1 to 4094, and &<1-10>
indicates that
you can specify up to 10 VLAN IDs or VLAN ID ranges.
Description
Use
stp
port-log
to enable outputting port state transition information for the specified MSTI or all
MSTIs.
Use
undo stp
port-log
to disable outputting port state transition information for the specified MSTI
or all MSTIs.
By default, this function is enabled.
Examples
# In MSTP mode, enable outputting port state transition information for MSTI 2.
<Sysname> system-view
[Sysname] stp port-log instance 2
%Aug 16 00:49:41:856 2006 Sysname MSTP/3/MSTP_DISCARDING: Instance 2's Ethernet1/0/1 has
been set to discarding state!
%Aug 16 00:49:41:856 2006 Sysname MSTP/3/MSTP_DISCARDING: Instance 2's Ethernet1/0/2 has
been set to forwarding state!
The output shows that Ethernet 1/0/1 in MSTI 2 transitioned to the discarding state and Ethernet
1/0/2 in MSTI 2 transitioned to the forwarding state.
# In PVST mode, enable outputting port state transition information for VLAN 1 to VLAN 4094.
<Sysname> system-view
[Sysname] stp mode pvst
[Sysname] stp port-log vlan 1 to 4094
%Aug 16 00:49:41:856 2006 Sysname MSTP/3/PVST_DISCARDING: VLAN 2's Ethernet1/0/1 has been
set to discarding state!
%Aug 16 00:49:41:856 2006 Sysname MSTP/3/PVST_FORWARDING: VLAN 2's Ethernet1/0/2 has been
set to forwarding state!
The output shows that Ethernet 1/0/1 in VLAN 2 transitioned to the discarding state and Ethernet
1/0/2 in VLAN 2 transitioned to the forwarding state.
stp priority
Syntax
stp
[
instance
instance-id
|
vlan
vlan-list
]
priority priority
undo stp
[
instance
instance-id
|
vlan
vlan-list
]
priority
View
System view
Default level
2: System level