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White Rabbit Switch - Software
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White Rabbit Switch - Software
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c724d30a
Commit
c724d30a
authored
May 04, 2020
by
Maciej Lipinski
Committed by
Grzegorz Daniluk
May 20, 2020
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[doc] added info about the additional latency introduced by the LLDP
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5c1017c2
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doc/wrs-user-manual.in
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c724d30a
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@@ -281,7 +281,16 @@ the behavior of the WR Switch. Here are highlights:
of aspects of the PPS generation, @b
{
the default configuration might be
slightly different from the pre-v6.0 firmware
}
.
@item @b
{
LLDP options
}
- it provides configuration of Link Layer Discovery
Protocol is supported.
Protocol (LLDP) which is now supported. It is enabled by default. @b
{
Note that
LLDP sends Ethernet frames of approximately 200 bytes. In the worst-case,
transmission of such frames can increase traffic latency by 0.8us
@footnote
{
The maximum PTP frame size is 96 bytes which translates into 0.76us
latency increase to the data traffic, in case the PTP frame is sent to a
port at the same time as the data traffic frame is to be forwarded to
this port. An additional 100 bytes of the LLDP
frame, translates into additional 0.8us latency introduced by protocol
frames.
}
.
}
If you
do not use LLDP and latency is of concern, you should disable LLDP option.
@item @b
{
Disable web interface
}
- web interface is now disabled by default
and considered deprecated (no effort was put in making sure it works
properly). @b
{
Users are strongly discouraged from using the web interface
}
.
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