FDDI Management

 

will not occur unless you are using locally-administered

 

addresses, as factory-set MAC addresses are guaranteed

 

to be unique.

Ring-Op-Dup

The ring is operational; however, the address of the

 

MAC under control of the SMT entity has been

 

found to duplicate that of another MAC on the ring.

 

Corrective actions will be attempted before the duplicate

 

address condition causes ring initialization to fail

 

after the claim and beacon recovery process. Like

 

Non-Op-Dup, this state will not occur unless you are

 

using locally-administered addresses.

Directed

The beacon process did not complete within 7 seconds.

 

The selected SMT has directed the controlled MAC to

 

send beacon frames to notify the other stations that a

 

serious problem exists on the ring, and a Trace state is

 

soon to follow.

Trace

A problem exists on the ring which could not be

 

corrected during the beaconing process, and a Trace has

 

been initiated. During a Trace (or Path Test), the SMT

 

sends a signal that forces its nearest upstream neighbor

 

to remove from the ring and conduct a self-test. If the

 

ring does not recover, each subsequent upstream station

 

will be forced to remove from the ring and conduct

 

self-tests until the problem has been corrected. While the

 

test is being conducted, ring management re-enters the

 

isolated state.

SMT Version

Displays the version number of the Station Management (SMT) entity. SMT provides the system management services for the FDDI protocols, including connection management, node configuration, error recovery, and management frame encoding. SMT frames have a version ID field that identifies the structure of the SMT frame Info field. The version number is included in the SMT frame so that a receiving station can determine whether or not its SMT version is able to communicate with the SMT version of another station. Knowing the version number allows the stations to handle version mismatches. Each FDDI station supports a range of SMT versions. The supported version range is identified within the ietf-fddi MIB by two smtTable attributes: snmpFddiSMTLoVersionId and snmpFddiSMTHiVersionId. If a received frame is not within the supported version range, the frame is discarded.

T-Req. (Requested Target Token Rotation Time)

The token rotation time bid made by the selected SMT entity during ring initialization. Each station detecting that the ring must be initialized begins a claim token process and issues a stream of Claim Frames, which negotiate the value assigned to the Target Token Rotation Time (TTRT). The information field of these frames contains the issuing station’s bid for the value of TTRT. Each claiming station inspects incoming Claim frames (from other issuing stations) and

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Viewing FDDI Information

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Enterasys Networks 700 manual SMT Version, Req. Requested Target Token Rotation Time

700 specifications

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