ZyXEL Communications ES3500 Series Name, VLAN, MSTI, Times, Digest, Change, Bridge, Port ID, Port ID, Instance, Instance:, Bridge ID, Configuration, Configuration, Internal Cost

	Chapter 13 Spanning Tree Protocol
Table 40 Advanced Application > Spanning Tree Protocol > Status: MSTP (continued)
LABEL	DESCRIPTION
Port ID	This is the priority and number of the port on the Switch through which this Switch must
	communicate with the root of the Spanning Tree.
Configuration	This field displays the configuration name for this MST region.
Name
Revision Number	This field displays the revision number for this MST region.
Configuration	A configuration digest is generated from the VLAN-MSTI mapping information.
Digest	This field displays the 16-octet signature that is included in an MSTP BPDU. This field
	displays the digest when MSTP is activated on the system.
Topology Changed	This is the number of times the spanning tree has been reconfigured.
Times
Time Since Last	This is the time since the spanning tree was last reconfigured.
Change
Instance:	These fields display the MSTI to VLAN mapping. In other words, which VLANs run on each
	spanning tree instance.
Instance	This field displays the MSTI ID.
VLAN	This field displays which VLANs are mapped to an MSTI.
MSTI	Select the MST instance settings you want to view.
Bridge	Root refers to the base of the MST instance. Our Bridge is this Switch. This Switch may
	also be the root bridge.
Bridge ID	This is the unique identifier for this bridge, consisting of bridge priority plus MAC address.
	This ID is the same for Root and Our Bridge if the Switch is the root switch.
Internal Cost	This is the path cost from the root port in this MST instance to the regional root switch.
Port ID	This is the priority and number of the port on the Switch through which this Switch must
	communicate with the root of the MST instance.

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ES3500 Series User’s Guide