but after input the new vlan-id to the instance .check,The instance only have the old vlan-id.
before:
[Huawei]stp region-configuration
[Huawei-mst-region]instance 1 vlan 1
[Huawei-mst-region]active region-configuration
[Huawei-mst-region]display this
#
stp region-configuration
instance 1 vlan 1
active region-configuration
#
return
test:
[Huawei-mst-region]instance 1 vlan 2
[Huawei-mst-region]display this
#
stp region-configuration
instance 1 vlan 1
active region-configuration
#
return
so each time we modify region-configuration, active region-configuration needs to be used.