D-Link DES-3624 - Switch - Stackable User manual - page 92
Stackable NWay Ethernet Switch User’s Guide
Figure 6-12. Configure Advanced Switch Features screen
The fields you can set are:
♦ Port Auto-Partition Capability on All Ports When this
function is enabled, if too many consecutive collisions occur
on an individual port, the port will be blocked off until a
good packet is seen on the wire. If a port is partitioned, the
Switch can only transmit data, not receive it.
♦ Head Of Line (HOL) Blocking Prevention Enables or
disables Head-Of-Line Blocking Prevention. Head-of Line
blocking occurs when a packet originating on Port 1, for
instance, needs to be forwarded to Ports 2 and 3. If Port 2 is
occupied (causing the packet to be held in memory until the
port is free), the packet destined for Port 3 will also be
delayed, even though the port may be free. Cumulatively,
these delays can have a noticeable effect on overall network
performance. Enabling HOL Blocking Prevention prevents
Head-of-Line blocking from occurring, meaning that the
packet destined for Port 3 gets delivered immediately.
72
Using the Console Interface