CTC Union FTH4-1000MS, User Manual

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Management Packet High Priority is a function which is enabled by default. Unless VLAN is enabled, this function is meaningless. The
packet priority is included as 3 bit priority in the VLAN tag. Management packets will be assigned the highest priority so that even in the
presence of high traffic throughput, this converter can still be easily managed.
Broadcast Storm is a condition where either a loop exists on the network or an Ethernet transceiver is bad and exhibiting jabber. In
addition there are the deliberate attempts to bring a network down through virus and denial of service routines. When enabled, the Broadcast
Storm Filter will recognize and block the forwarding of these broadcasts.
Multicast storms happen when application participants request retransmits of information they have missed in the multicast stream. There
are many applications, like video streaming, IP based punch clocks, IP based surveillance trackers and camera, that come with multicast or
some broadcast based protocol turned on by default. The
Multicast Storm Filter can be enabled to filter these unwanted effects.
The
Unknown DA Unicast Storm Filter can be used to filter the Unicast broadcasts whose objective is to cause deny-of-service. Some
Trojans and virus start scanning multicast IP ranges causing excess broadcasts and reducing network performance.