ieee8021SpanningTreeDesignatedRoot
IEEE8021-SPANNING-TREE-MIB ·
.1.3.111.2.802.1.1.3.1.1.1.6
Object
column
BRIDGE-MIBBridgeId
The Bridge identifier of the root of the spanning tree, as determined by the Spanning Tree Protocol, as executed by this node. This value is used as the Root Identifier parameter in all Configuration Bridge PDUs originated by this node.
Context
- MIB
- IEEE8021-SPANNING-TREE-MIB
- OID
.1.3.111.2.802.1.1.3.1.1.1.6- Type
- column
- Access
- readonly
- Status
- current
- Parent
- ieee8021SpanningTreeEntry
- Table
- ieee8021SpanningTreeTable
- Siblings
- 16
Syntax
BRIDGE-MIBBridgeId
- Source
- BRIDGE-MIBBridgeId
- Base type
OctetString
Values & Constraints
Type Constraints
range: 8
Related Objects
Sibling Objects
| Object | Type | Syntax | OID |
|---|---|---|---|
| ieee8021SpanningTreeComponentId The component identifier is used to distinguish between the
multiple virtual Bridge instances within a PBB. In simple
situations where there is only a single component the defaul… | column | IEEE8021-TC-MIBIEEE8021PbbComponentIdentifier | .1.3.111.2.802.1.1.3.1.1.1.1 |
| ieee8021SpanningTreeHelloTime The amount of time between the transmission of
Configuration Bridge PDUs by this node on any port when
it is the root of the spanning tree, or trying to become
so, in units of hun… | column | centi-seconds BRIDGE-MIBTimeout | .1.3.111.2.802.1.1.3.1.1.1.10 |
| ieee8021SpanningTreeHoldTime This time value determines the interval length
during which no more than two Configuration Bridge
PDUs shall be transmitted by this node, in units
of hundredths of a second. | column | centi-seconds SNMPv2-SMIInteger32 | .1.3.111.2.802.1.1.3.1.1.1.11 |
| ieee8021SpanningTreeForwardDelay This time value, measured in units of hundredths of a
second, controls how fast a port changes its spanning
state when moving towards the Forwarding state. The
value determines h… | column | centi-seconds BRIDGE-MIBTimeout | .1.3.111.2.802.1.1.3.1.1.1.12 |
| ieee8021SpanningTreeBridgeMaxAge The value that all Bridges use for MaxAge when this
Bridge is acting as the root. Note that IEEE Std 802.1D-1998
specifies that the range for this parameter is related
to the val… | column | centi-seconds Integer32 | .1.3.111.2.802.1.1.3.1.1.1.13 |
| ieee8021SpanningTreeBridgeHelloTime The value that all Bridges use for HelloTime when this
Bridge is acting as the root. The granularity of this
timer is specified by IEEE Std 802.1D-1998 to be 1 second.
An agent … | column | centi-seconds Integer32 | .1.3.111.2.802.1.1.3.1.1.1.14 |
| ieee8021SpanningTreeBridgeForwardDelay The value that all Bridges use for ForwardDelay when
this Bridge is acting as the root. Note that IEEE Std
802.1D-1998 specifies that the range for this parameter
is related to … | column | centi-seconds Integer32 | .1.3.111.2.802.1.1.3.1.1.1.15 |
| ieee8021SpanningTreeVersion The version of Spanning Tree Protocol the Bridge is
currently running. The values are directly from
the IEEE standard. New values may be defined as future
versions of the protoc… | column | Enumeration | .1.3.111.2.802.1.1.3.1.1.1.16 |
| ieee8021SpanningTreeRstpTxHoldCount The value used by the Port Transmit state machine to limit
the maximum transmission rate. This is used by Bridges
that are running RSTP.
The value of this object M… | column | Integer32 | .1.3.111.2.802.1.1.3.1.1.1.17 |
| ieee8021SpanningTreeProtocolSpecification An indication of what version of the Spanning Tree Protocol is
being run. The value 'decLb100(2)' indicates the DEC LANbridge
100 Spanning Tree protocol. IEEE 802.1D implementat… | column | Enumeration | .1.3.111.2.802.1.1.3.1.1.1.2 |
| ieee8021SpanningTreePriority The value of the write-able portion of the Bridge ID
(i.e., the first two octets of the (8 octet long) Bridge
ID). The other (last) 6 octets of the Bridge ID are
given by the val… | column | Integer32 | .1.3.111.2.802.1.1.3.1.1.1.3 |
| ieee8021SpanningTreeTimeSinceTopologyChange The time (in hundredths of a second) since the
last time a topology change was detected by the
Bridge entity.
For RSTP, this reports the time since the tcWhile
timer for any port … | column | centi-seconds SNMPv2-SMITimeTicks | .1.3.111.2.802.1.1.3.1.1.1.4 |
| ieee8021SpanningTreeTopChanges The total number of topology changes detected by
this Bridge since the management entity was last
reset or initialized.
Discontinuities in the value of the counter … | column | topology changes SNMPv2-SMICounter64 | .1.3.111.2.802.1.1.3.1.1.1.5 |
| ieee8021SpanningTreeRootCost The cost of the path to the root as seen from
this Bridge. | column | SNMPv2-SMIInteger32 | .1.3.111.2.802.1.1.3.1.1.1.7 |
| ieee8021SpanningTreeRootPort The port number of the port that offers the lowest
cost path from this Bridge to the root Bridge. | column | IEEE8021-TC-MIBIEEE8021BridgePortNumber | .1.3.111.2.802.1.1.3.1.1.1.8 |
| ieee8021SpanningTreeMaxAge The maximum age of Spanning Tree Protocol information
learned from the network on any port before it is
discarded, in units of hundredths of a second. This is
the actual value th… | column | centi-seconds BRIDGE-MIBTimeout | .1.3.111.2.802.1.1.3.1.1.1.9 |