<div>
Black hole detection provides a means for end devices to work efficiently over links with different MTU sizes. &nbsp;For example, your local ethernet has an MTU of 1500 Bytes. &nbsp;If there's a link somewhere along the line with some encapsulation that lowers the MTU to 1450 bytes, you'll end up with fragmented or dropped packets. &nbsp;<br />
<br />
A Black hole router is one that drops the packets without telling you.<br />
<br />
With Black hole detection enabled, your end device will notice the loss of packets and start dialing down the MTU until packets get through. &nbsp;This allows the end device to operate at max efficiency even though an intervening router may not be playing nicely.<br />

</div>


Black hole detection provides a means for end devices to work efficiently over links with different MTU sizes.  For example, your local ethernet has an MTU of 1500 Bytes.  If there's a link somewhere along the line with some encapsulation that lowers the MTU to 1450 bytes, you'll end up with fragmented or dropped packets.  

A Black hole router is one that drops the packets without telling you.

With Black hole detection enabled, your end device will notice the loss of packets and start dialing down the MTU until packets get through.  This allows the end device to operate at max efficiency even though an intervening router may not be playing nicely.


<div>
Would you turn it on if your main concern was speedy responsiveness from internet.<br />
<br />
BTW, nicely explained.
</div>


Would you turn it on if your main concern was speedy responsiveness from internet.

BTW, nicely explained.

<div>
<div class="content wysiwyg-content">
Blackhole Detection sounds like a good thing. &nbsp;Who wants to be caught in a blackhole?<br />
But System Mechanic Internet speedup turns that off.<br />
What are pro/cons of Blackhole Detection? &nbsp;(briefly)
</div>
</div>


Blackhole Detection sounds like a good thing.  Who wants to be caught in a blackhole?
But System Mechanic Internet speedup turns that off.
What are pro/cons of Blackhole Detection?  (briefly)

Blackhole Detection

The term broadband commonly refers to high-speed Internet access that is always on and faster than the traditional dial-up access. Broadband includes several high-speed transmission technologies such as digital subscriber line (DSL), cable, fiber optics, wireless (for which there is a separate topic), satellite and broadband over powerlines (BPL).