D-Link DES-3624 - Switch - Stackable User manual - Broadcast Management
Stackable NWay Ethernet Switch User’s Guide
information to make forwarding decisions. As a result, the
packets coming from the non-compliant device would
automatically be placed on the ingress ports VLAN and could
only communicate with other ports that are members of this
VLAN.
Broadcast Management
Broadcast transmissions, packets sent to every devices on the
LAN, are a vital part of any network. However, they can often
cause problems on the network and even network failure. For
this reason the Switch has a number of tools for managing
broadcast packets on your network.
Broadcast Storms
Broadcast storms are a common problem on today’s networks.
Basically, they consist of broadcast packets that flood and/or
are looped on a network causing noticeable performance
degradation and in extreme cases, network failure. Some of the
causes of broadcast storms are network loops, malfunctioning
NICs, bad cable connections, and applications or protocols that
generate broadcast traffic.
Broadcast storms can originate from any number of sources,
and once they are started, they can be self-perpetuating, and
can even multiply the number of broadcast packets on the
network over time. In the best case, network utilization will be
high and bandwidth limited until the hop counts for all
broadcast packets have expired, whereupon the packets will be
discarded and the network will return to normal. In the worst
case, they will multiply, eventually using up all the network
bandwidth (although network applications will usually crash
long before this happens), and cause a network meltdown.
Switch Management Concepts
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