Avaya 580 - Manual (Page 652)

23-4 User Guide for the Avaya P580 and P882 Multiservice Switches, v6.1
Chapter 23
Table 23-1. Ethernet Interface Statistics Web Page Fields
Statistic Indicates Actions
Sample The sample number. N/A
Interval Start The date and time this log entry was
made. N/A
Utilization Percentage of utilization. The percentage of available bandwidth used
by traffic.
Bytes Raw number of octets received at the
interface. Provides some indication of
the amount of network bandwidth
being used. A sharp increase could indicate a need to
reconfigure the network.
Packets Counts the raw number of readable
Ethernet packets of legal length
received at the interface. A sharp increase could indicate a need to
reconfigure the network. (However, octets
are a better indication of bandwidth
utilization.)
Broadcasts Broadcast packets are a normal part of
network operation. For example, IP
networks use broadcasts as part of
Address Resolution Protocol (ARP) to
resolve network addresses. Uses monitoring to recognize oncoming
broadcast storms. Broadcast storms occur
when stations are creating traffic that
generates more traffic.
Possible cause: Broadcasts cause every host
on a network segment to process the packet.
Possible actions:
• To prevent broadcast storms, use
VLANs to limit the area of the
network that each broadcast packet
affects. In general, each VLAN
creates a separate broadcast domain.
More VLANs mean less proliferation
of broadcast packets.
• Monitor the broadcast rate of your
network during normal operation.
• Establish a baseline.
• Use Rate Limiting to reduce
broadcasts.
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