RFCEnBridge-MIB: View SNMP OID List / Download MIB

The MAC address used by this bridge when it must be referred to in a unique fashion. It is recommended that this be the numerically smallest MAC address of all ports that belong to this bridge. However it is only required to be unique. When concatenated with dot1dStpPriority a unique BridgeIdentifier is formed which is used in the Spanning Tree Protocol.

The number of ports controlled by this bridging entity.

Indicates what type of bridging this bridge can perform. If a bridge is actually performing a certain type of bridging this will be indicated by entries in the port table for the given type. Enumeration: 'unknown': 1, 'transparent-only': 2, 'srt': 4, 'sourceroute-only': 3.

A table that contains generic information about every port that is associated with this bridge. Transparent, source-route, and srt ports are included.

A list of information for each port of the bridge.

Identifies the port for which this entry contains bridge management information. The value of this object for a particular port has the same value as the ifIndex object, defined in [4,6], for the corresponding interface.

The number of frames discarded by this port due to excessive transit delay through the bridge. It is incremented by both transparent and source route bridges.

The number of frames discarded by this port due to an excessive size. It is incremented by both transparent and source route bridges.

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 implementations will return 'ieee8021d(3)'. If future versions of the IEEE Spanning Tree Protocol are released that are incompatible with the current version a new value will be defined. Enumeration: 'ieee8021d': 3, 'unknown': 1, 'decLb100': 2.

The value of the priority field which is contained in the first two octets of the (8 octet long) Bridge ID. The other (last) 6 octets of the Bridge ID are given by the value of dot1dBaseBridgeAddress.

The time (in hundreths of a second) since the last time a topology change was detected by the bridge entity.

The total number of topology changes detected by this bridge since the management entity was last reset or initialized.

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.

The cost of the path to the root as seen from this bridge.

Identifies the port which offers the lowest cost path from this bridge to the root bridge. The value of this object indicates the port for which the ifIndex object, defined in [4,6], of the corresponding interface has the same value.

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 that this bridge is currently using.

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 hundredths of a second. This is the actual value that this bridge is currently using.

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.

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 how long the port stays in a particular state before moving to the next state. For example, how long a port stays in the Listening state when moving from Blocking to Learning. This value is also used, when a topology change has been detected and is underway, to age all dynamic entries in the Forwarding Database. [Note that this value is the one that this bridge is currently using, in contrast to dot1dStpBridgeForwardDelay which is the value that this bridge and all others would start using if/when this bridge were to become the root.]

The value that all bridges use for MaxAge when this bridge is acting as the root.

The value that all bridges use for HelloTime when this bridge is acting as the root.

The value that all bridges use for ForwardDelay when this bridge is acting as the root.

A table that contains port-specific information for the Spanning Tree Protocol.

A list of information maintained by every port about the Spanning Tree Protocol state for that port.

Identifies the port for which this entry contains Spanning Tree Protocol management information. The value of this object for a particular port has the same value as the ifIndex object, defined in [4,6], for the corresponding interface.

The value of the priority field which is contained in the first octet of the (2 octet long) Port ID. The other octet of the Port ID is given by the value of dot1dStpPortIfIndex.

The port's current state as defined by application of the Spanning Tree Protocol. This state controls what action a port takes on reception of a frame. If the bridge has detected a port that is malfunctioning it will place that port into the broken(7) state. For ports which are disabled (see dot1dStpPortEnable), this object will have a value of disabled(1). Enumeration: 'listening': 3, 'disabled': 1, 'broken': 6, 'learning': 4, 'forwarding': 5, 'blocking': 2.

The enabled/disabled status of the port. Enumeration: 'disabled': 1, 'enabled': 2.

The MAC address used as the destination for all Spanning Tree Protocol PDU generated out this port.

The contribution of this port to the path cost of paths towards the spanning tree root which include this port.

The unique Bridge Identifier of the Bridge recorded as the Root in the Configuration BPDUs transmitted by the Designated Bridge for the LAN to which the Port is attached.

The path cost of the Designated Port of the segment connected to this port. This value is compared to the Root Path Cost field in received bridge PDUs.

The Bridge Identifier of the bridge which this port considers to be the Designated Bridge for this port's segment.

The Port Identifier of the port on the Designated Bridge for this port's segment.

The number of times this port has transitioned from the Learning state to the Forwarding state.

The total number of Forwarding Database entries, which have been or would have been learnt, but have been discarded due to a lack of space to store them in the Forwarding Database. If this counter is increasing, it indicates that the Forwarding Database is regularly becoming full (a condition which has unpleasant performance effects on the subject LAN). If this counter has a significant value but is not presently increasing, it indicates that the problem has been occurring but is not persistent.

The timeout period in seconds for aging out dynamically learned forwarding information.

A table that contains information about unicast entries for which the bridge has forwarding and/or filtering information. This information is used by the transparent bridging function in determining how to propagate a received frame.

Information about a specific unicast MAC address for which the bridge has some forwarding and/or filtering information.

A unicast MAC address for which the bridge has forwarding and/or filtering information.

Either the value '0', or the port on which a frame having a source address equal to the value of the corresponding instance of dot1dTpFdbAddress has been seen. A non-zero value of this object indicates the port for which the ifIndex object, defined in [4,6], of the corresponding interface has the same value. A value of '0' indicates that the port number has not been learned but that the bridge does have some forwarding/filtering information about this address (e.g. in the dot1dStaticTable). Implementors are encouraged to assign the port value to this object whenever it is learned even for addresses for which the corresponding value of dot1dTpFdbStatus is not learned(3).

The status of this entry. The meanings of the values are: other(1) : none of the following. This would include the case where some other MIB object (not the corresponding instance of dot1dTpFdbPort, nor an entry in the dot1dStaticTable) is being used to determine if and how frames addressed to the value of the corresponding instance of dot1dTpFdbAddress are being forwarded. invalid(2) : this entry is not longer valid (e.g. it was learned but has since aged-out), but has not yet been flushed from the table. learned(3) : the value of the corresponding instance of dot1dTpFdbPort was learned, and is being used. self(4) : the value of the corresponding instance of dot1dTpFdbAddress represents one of the bridge's addresses. The corresponding instance of dot1dTpFdbPort indicates which of the bridge's ports has this address. mgmt(5) : the value of the corresponding instance of dot1dTpFdbAddress is also the value of an existing instance of dot1dStaticAddress. Enumeration: 'learned': 3, 'other': 1, 'self': 4, 'invalid': 2, 'mgmt': 5.

An indication of whether Spanning Tree is being run. Enumeration: 'active': 1, 'inactive': 2.

A table containing filtering information configured into the bridge by (local or network) management specifying the set of ports to which frames received from specific ports and containing specific protocols are allowed to be forwarded.

Filtering information configured into the bridge by (local or network) management specifying the set of ports to which frames received from a specific port and containing a specific protocols are allowed to be forwarded.

The destination MAC address in a frame to which this entry's filtering information applies. This object can take the value of a unicast address, a group address or the broadcast address.

The port from which a frame must be received in order for this entry's filtering information to apply. The value of this object is either zero, or it indicates the port for which the ifIndex object, defined in [4,6], of the corresponding interface has the same value. A value of zero indicates that this entry applies on all ports of the bridge.

The set of ports to which frames received from a specific port and destined for a specific MAC address, are allowed to be forwarded. Each octet within the value of this object specifies a set of eight ports, with the first octet specifying ports 1 through 8, the second octet specifying ports 9 through 16, etc. Within each octet, the most significant bit represents the lowest numbered port, and the least significant bit represents the highest numbered port. Thus, each port of the bridge is represented by a single bit within the value of this object. If that bit has a value of '1' then that port is included in the set of ports; the port is not included if its bit has a value of '0'.

This object indicates the status of this entry. other(1) - this entry is currently in use but the conditions under which it will remain so are different from each of the following values. invalid(2) - writing this value to the object removes the corresponding entry. permanent(3) - this entry is currently in use and will remain so after the next reset of the bridge. deleteOnReset(4) - this entry is currently in use and will remain so until the next reset of the bridge. deleteOnTimeout(5) - this entry is currently in use and will remain so until it is aged out. Enumeration: 'permanent': 3, 'deleteOnTimeout': 5, 'other': 1, 'deleteOnReset': 4, 'invalid': 2.

A table containing filtering information configured into the bridge by (local or network) management specifying the set of ports to which frames received from specific ports and containing specific source addresses are allowed to be forwarded. Entries are valid for unicast and for group/broadcast addresses.

Filtering information configured into the bridge by (local or network) management specifying the set of ports to which frames received from a specific port and containing a specific source address are allowed to be forwarded.

The destination MAC address in a frame to which this entry's filtering information applies. This object can take the value of a unicast address, a group address or the broadcast address.

The port from which a frame must be received in order for this entry's filtering information to apply. The value of this object is either zero, or it indicates the port for which the ifIndex object, defined in [4,6], of the corresponding interface has the same value. A value of zero indicates that this entry applies on all ports of the bridge.

The set of ports to which frames received from a specific port and destined for a specific MAC address, are allowed to be forwarded. Each octet within the value of this object specifies a set of eight ports, with the first octet specifying ports 1 through 8, the second octet specifying ports 9 through 16, etc. Within each octet, the most significant bit represents the lowest numbered port, and the least significant bit represents the highest numbered port. Thus, each port of the bridge is represented by a single bit within the value of this object. If that bit has a value of '1' then that port is included in the set of ports; the port is not included if its bit has a value of '0'.

This object indicates the status of this entry. other(1) - this entry is currently in use but the conditions under which it will remain so are different from each of the following values. invalid(2) - writing this value to the object removes the corresponding entry. permanent(3) - this entry is currently in use and will remain so after the next reset of the bridge. deleteOnReset(4) - this entry is currently in use and will remain so until the next reset of the bridge. deleteOnTimeout(5) - this entry is currently in use and will remain so until it is aged out. Enumeration: 'permanent': 3, 'deleteOnTimeout': 5, 'other': 1, 'deleteOnReset': 4, 'invalid': 2.

A table containing filtering information configured into the bridge by (local or network) management specifying the set of ports to which frames received from specific ports and containing specific destination addresses are allowed to be forwarded. Entries are valid for unicast and for group/broadcast addresses.

Filtering information configured into the bridge by (local or network) management specifying the set of ports to which frames received from a specific port and containing a specific destination address are allowed to be forwarded.

The destination MAC address in a frame to which this entry's filtering information applies. This object can take the value of a unicast address, a group address or the broadcast address.

The port from which a frame must be received in order for this entry's filtering information to apply. The value of this object is either zero, or it indicates the port for which the ifIndex object, defined in [4,6], of the corresponding interface has the same value. A value of zero indicates that this entry applies on all ports of the bridge.

The set of ports to which frames received from a specific port and destined for a specific MAC address, are allowed to be forwarded. Each octet within the value of this object specifies a set of eight ports, with the first octet specifying ports 1 through 8, the second octet specifying ports 9 through 16, etc. Within each octet, the most significant bit represents the lowest numbered port, and the least significant bit represents the highest numbered port. Thus, each port of the bridge is represented by a single bit within the value of this object. If that bit has a value of '1' then that port is included in the set of ports; the port is not included if its bit has a value of '0'.

This object indicates the status of this entry. other(1) - this entry is currently in use but the conditions under which it will remain so are different from each of the following values. invalid(2) - writing this value to the object removes the corresponding entry. permanent(3) - this entry is currently in use and will remain so after the next reset of the bridge. deleteOnReset(4) - this entry is currently in use and will remain so until the next reset of the bridge. deleteOnTimeout(5) - this entry is currently in use and will remain so until it is aged out. Enumeration: 'permanent': 3, 'deleteOnTimeout': 5, 'other': 1, 'deleteOnReset': 4, 'invalid': 2.

This object indicates the status of manual filter switches. enabled(1) - all manual filter switches entered in the filtering table are active. Therfore, the packet filtering decision process checks the manual filters to decide whether to filter/forward packets. disabled(2) - all manual filter switches entered in in the filtering table are inactive. Therefore, the packet filtering decision process ignores all of the addresses in the filtering table as to decide whether to filter/forward packets. Enumeration: 'disabled': 2, 'enabled': 1.

This object indicates the status of manual filter switches. filter(1) - all addresses in the manual filtering table are filter addresses. Thus, if an incoming packet matches one of the addresses in the filtering table, the packet is filtered. This is the normal operating mode of the bridge. forward(2) - all addresses in the manual filtering table are forward addresses. Thus, if an incoming packet matches one of the addresses in the filtering table, the packet is forwarded. All other addresses are filtered. Enumeration: 'filter': 1, 'forward': 2.