Port Applications; Port Security; Broadcast Rate Limiting - RuggedCom RuggedSwitch RS1600 User Manual

Ruggedcom hub/switch user guide
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• Port Latency: 10 Mbps - 16µs + frame time, 100 Mbps - 5µs + frame time

Port Applications

Port Security

Port Security provides the ability to filter or accept traffic from specific MAC
addresses.
Port Security works by inspecting the source MAC addresses of received frames
and validating them against the contents in the Static MAC Address Table (See
Chapter 2 - Configuring MAC Address Management). Unauthorized frames will be
filtered and, optionally, the port that receives the frame shutdown permanently or
for a period of time. An alarm will be raised indicating the unauthorized MAC
address (See Chapter 8 – Diagnostics).
Unicast frames to unknown destination addresses will not be flooded through
secure ports.
The switch can also be programmed to learn and allow the first source MAC
address encountered on the port. This feature provides a convenient means for
network administrators to "capture" the appropriate secure addresses when
turning up a port. The MAC address will be permanently added to the Static MAC
Address Table.
Note:
Port security is applied at the edge of the network in order to restrict admission to
specific devices. Do not apply port security on core switch connections or where traffic types such
as RSTP or IGMP are active.

Broadcast Rate Limiting

Broadcast rate filtering provides a means to limit the rate of broadcast frames
accepted by each port.
Broadcast rate filtering limits the severity of broadcast storms.
RuggedCom
Chapter 3 – Configuring the Ports
15

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