Alcatel Carrier Internetworking Solutions Omni Switch/Router User Manual

Page 533

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The Switch Menu

Page 18-37

the normal ring state or ring purge state to elect a new active monitor.

Claim Token Packets

. The total number of claim packets transmitted by this port.

The next group describe error statistics for token, MAC, and LLC packets.

Internal Errors

. The total number of times this port detects a recoverable internal error.

Line Errors

. The total number of errors caused by problems with the physical links (code

violations, Frame Check Sequence (FCS) errors inside a frame).

Burst Errors

. The total number errors when this port detects the absence of transmissions for

five (5) half-bit timers (burst-five errors).

AC Errors

. The total number of token packets with an invalid Access Control (AC) byte.

Abort Errors

. The total number of times that this port detects an abort delimiter while transmit-

ting a packet.

LostFrame Errors

. The total number of packets that failed to reach their destination after the

token ring rotation timer has expired.

Congestion Errors

. The total number of packets lost due to the fact that no buffer was avail-

able at the destination station.

Frame Copied Errors

. The total number of times that a frame has been incorrectly copied by

another station on the ring or copied by a station with a duplicate address.

Frequency Errors

. The total number of timing errors frames detected by this port that did not

contain a proper ring-clock frequency.

Token Errors

. The total number of times this port detects that a new token was generated by

the Active Monitor on the ring due to a lost token.

Soft Errors

. The total number of recoverable errors detected by this port.

The next group describe statistics for changes in ring topology.

Ring Poll Events

. The total number of times that this port has learned its upstream neighbor’s

address and has broadcasted the inserting adapter’s address to the port’s downstream neigh-
bor.

Internal Errors

. The total number of insertion failures.

NAUN Changes

. The number of times that the Nearest Active Upstream Neighbor (NAUN) for

this port has changed.

The next set of statistics display information on network traffic. These statistics are only
applied to received packets.

Received 18_63 byte Pkts

. The total number of packets received on this port that were at least

18 bytes (octets) long and less than or equal to 63 bytes long.

Received 64_127 byte Pkts

. The total number of packets received on this port that were at least

64 bytes (octets) long and less than or equal to 127 bytes long.

Received 128_255 byte Pkts

. The total number of packets received on this port that were at

least 128 bytes (octets) long and less than or equal to 255 bytes long.

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