Cabletron Systems 2.2 Manuel D’Utilisation

Bridge Statistics

2-33

Bridging

the destination station, which then directs a reply back to the source. The Þrst
reply received by the original sending station is considered the most efÞcient
route and is used in subsequent transmissions.

Span. Tree Expl.

ÑDisplays the total number of Spanning Tree Explorer (STE)

frames received by the indicated port from its attached segment. STE frames,
also known as Single Route Broadcast frames, follow the topology established
by the Spanning Tree Algorithm.

Transmitted Frames

List of Frame types transmitted by the bridge ports

Specif. Routed

ÑDisplays the total number of SpeciÞcally Routed Frames

transmitted by the indicated port onto its attached segment.

All Paths Expl.

ÑDisplays the total number of All Path Explorer frames

transmitted by the indicated port onto its attached segment.

Span Tree Expl.

ÑDisplays the total number of Spanning Tree Explorer (STE)

frames transmitted by the indicated port onto its attached segment.

Discards

List of Frames discarded by the bridge ports.

Segment Mismatch

ÑDisplays the number of explorer frames discarded

because their routing descriptor Þeld contained an invalid value for a segment
attached to the port.

The routing information Þeld of a SpeciÞcally Routed frame contains LAN
Segment In (Ring In)ÐBridge NumberÐLAN Segment Out (Ring Out)
information. If the bridgeÕs LAN Segment Out value does not match the LAN
Segment Out speciÞed in the frameÕs Routing Information Field, the bridge
logs a Segment Mismatch and discards the frame.

Duplicate Segment

ÑDisplays the number of frames discarded because the

frameÕs Routing Information Field identiÞes a particular segment more than
once.

Hop Cnt. Exceeded

ÑDisplays the number of All Paths Explorer frames

discarded at the speciÞed port because they exceeded the number of routing
descriptors (bridge hops) speciÞed by the Hop Count Limit.