Installation and Reference Guide (J3210A, J3212A, J3200A, J3202A, J3204A) 1996-08

3-8
Configuring the Switching Hubs in Software
Using the Console
Configuring the Switching
Hubs in Software
Port Counters
The port counters are from the IEEE 802.3 Repeater Management Specifica-
tion. They are described below:
Counter Name Definition Valid Range Corrective Action if over Valid
Range
Good Packets Number of error-free packets received. Less than 4000
packets per sec-
ond.*
Decrease the traffic level by us-
ing a switch to segment the net-
work.
Collisions Number of times the port was involved
in a collision. A single collision will be
counted by all ports involved, so the to-
tal collision counters may be less than
the sum of the port counts.
Less than 2 times
the number of good
packets.
Decrease the traffic level by us-
ing a switch to segment the net-
work
Replace bad cables and/or
transceivers if problems persist.
Rarely, you may have a defec-
tive LAN adapter.
Late Collisions Number of collisions which went unde-
tected by the sending end node.
Less than.1% of
good packets.
Too many repeaters between
end nodes, or cables which are
too long, or bad cable.
CRC/Alignment
Errors
Number of packets transmitted incor-
rectly and number of incorrectly aligned
packets.
Less than.1% of
good packets.
This counter indicates faulty ca-
bling.
Giant Packets Number of packets larger than 1518
bytes.
Less than.1% of
good packets.
Update the LAN adapter drivers
on all nodes connected to the
port.
Broadcast Packets Number of packets addressed to every-
one in the network. These packets con-
sume CPU resources from each node on
the network.
Less than 200 pack-
ets per second.*
Decrease the number of nodes
in an IP subnet or IPX network
by using more routers. Consult
Novell Netware documentation
on how to reduce broadcasts in
an IPX network.
*The port counters in the ASCII console show totals, not number of packets per second. For the Good Packets and
Broadcast packets, display counters twice over a period of one section to see if the value falls in the valid range.