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In MSTP mode, follow these guidelines:
•
If you do not specify any MSTI, this command displays the statistics of TC/TCN BPDUs received and
sent by all ports in all MSTIs. The displayed information is sorted by instance ID and by port name
in each MSTI.
•
If you specify an MSTI, this command displays the statistics of TC/TCN BPDUs received and sent by
all ports in the specified MSTI, in port name order.
Examples
# In MSTP mode, display the statistics of TC/TCN BPDUs received and sent by all ports in MSTI 0.
<Sysname> display stp instance 0 tc
MSTID Port Receive Send
0 GigabitEthernet1/0/1 6 4
0 GigabitEthernet1/0/2 0 2
Table 19
Command output
Field Description
Port Port
name.
Receive
Number of TC/TCN BPDUs received on each port.
Send
Number of TC/TCN BPDUs sent by each port.
instance
Syntax
instance
instance-id
vlan
vlan-list
undo instance
instance-id
[
vlan
vlan-list
]
View
MST region view
Default level
2: System level
Parameters
instance-id
: Specifies an MSTI ID. The value ranges from 0 to 15, where 0 represents the CIST.
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, ranging from 1 to 4094, and &<1-10>
indicates that you can
specify up to 10 VLAN IDs or VLAN ID ranges.
Description
Use
instance
to map a list of VLANs to the specified MSTI.
Use
undo instance
to remap the specified VLAN or all VLANs to the CIST (MSTI 0).
By default, all VLANs are mapped to the CIST.
If you specify no VLAN in the
undo instance
command, all VLANs mapped to the specified MSTI will be
remapped to the CIST.
You cannot map the same VLAN to different MSTIs. If you map a VLAN that has been mapped to an MSTI
to a new MSTI, the old mapping will be automatically removed.
