Download Cabletron Systems 6H122-16 User`s guide

Managing Ethernet MicroLAN Modules
Bytes
Displays the total number of bytes – including error packets – that have been processed by
the selected repeater, board, or port. Note that this byte count includes errors.
Broadcasts
Displays the total number of broadcast frames that have been processed by the repeater,
board, or port. Broadcast packets have a single address recognized by each station on the
net; this address is designated in IP address form as 255.255.255.255, or in MAC
hexadecimal form as FF-FF-FF-FF-FF-FF. ARP and RARP requests sent by bridges and
routers are broadcast messages.
Packets
Displays the total number of packets processed by the repeater, board, or port. Again, note
that the packet count includes errors.
Collisions
Displays the combined number of transmit and receive collisions detected by the repeater,
board, or port. Transmit collisions are those the Ethernet MicroLAN module detects while
transmitting a packet, which means the Ethernet MicroLAN module has transmitted one
of the colliding packets; receive collisions are those detected by the Ethernet MicroLAN
module while it is receiving a transmission.
Hard Errors
OOW Collisions
Giants
Soft Errors
CRC Errors
5-4
Displays the number of collisions out of the standard collision
window (51.2 µs) experienced by the repeater, board, or port.
Out-of-window collisions typically indicate a network design
flaw.
Displays the number of giant packets that the repeater, board,
or port has detected. A giant packet exceeds the maximum
Ethernet frame size of 1518 bytes (excluding the preamble).
Displays the total number of packets with CRC (Cyclical
Redundancy Check) errors that the repeater, board, or port has
received from the network. CRC errors occur when packets are
somehow damaged in transit.
Alignment Errors
Displays the total number of misaligned packets received by
the repeater, board, or port. A misaligned packet is one that
contains a non-integral number of bytes (that is, any unit of bits
less than a byte). Alignment errors are also known as framing
errors.
Runts
Displays the number of runt packets that the repeater, board, or
port has received from the network. A runt packet is one that is
less than the minimum Ethernet frame size of 64 bytes.
Repeater Statistics