Enterasys Networks Matrix E7, 6000 manual SMT Version, Req. Requested Target Token Rotation Time

FDDI Management

	beacon process. This state 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

6-4 Viewing FDDI Information