The colours do actually match!

Though these graphs aren't really intended for you to be able to pick out individual ports, there are usually too many for that to be possible.

It looks like there's a bug in the colour generating code which is generating one too few colours and the last one is wrapping back to the first colour. The code is supposed to generate $entries number of colours between two points to make a gradient.

adam.

Tony Guadagno wrote on 27/09/2023 14:52:

Adam, I think I am starting to understand, however, here is a snippet of the total traffic graph since 6am and another of gig0/0/0 same time period:

Total:                               gig0/0/0

On the total graph, the transmits and receives from gig0/0/0 are lt-purple and lt-green.  But in the legend for the total traffic, those colors don’t match…I guess that is what I am confused about, how do I know (on the total traffic graph) which interface is contributing if the color on the graph does not match the color on the legend?

Tony Guadagno

O +1 585 577 1003

C +1 585 703 6700

E tonyg@guadagnoconsulting.com mailto:tonyg@guadagnoconsulting.com

cid:image001.jpg@01D84DD6.FC9912E0

*From:*Adam Armstrong via observium observium@lists.observium.org *Sent:* Wednesday, September 27, 2023 8:56 AM *To:* Tony Guadagno via observium observium@lists.observium.org *Cc:* Adam Armstrong adama@observium.org *Subject:* [Observium] Re: sorry if this is a dumb question, but how do i read traffic graphs???

Hi Tony,

This is a stacked graph for a single device's total traffic, the layers are stacked in the order they're presented on the legend. The legend shows the "out" colours as lines because they're "fake" drawn as lines to get positive values in the legend.

Gi0 and Gi0/0/2 in on this system have no traffic, so aren't really relevant as they aren't visible on the graph. It's a little odd the colours have cycled with only 4 entries, that's likely just a quirk of the colour deciding function.

Anything positive on the axis is in/receive, and anything negative is out/transmit, the same as our other graphs.

adam.

Tony Guadagno via observium wrote on 27/09/2023 13:45:

Hi, after several years of using Observium, it just occurred to me
recently that I am not sure how to read the traffic graphs.  For
example, I always thought that above “0” on the horizontal axis
was transmit and below was receive.  But as I look closer, that
cannot be.  Also, the colors on the graph do not seem to line up
with the legend…for example in this graph, I see 4 colors,
light/dark green and light/dark purple.  But the legend seems to
have the same color for g0/0/0 as g0.

I guess my questions are:

How are transmits and receives represented on the traffic graphs?

Why are the colors in the graph not lining up with the legend?

What does negative 100M represent?

thanks


Tony Guadagno

O +1 585 577 1003

C +1 585 703 6700

E tonyg@guadagnoconsulting.com <mailto:tonyg@guadagnoconsulting.com>

cid:image001.jpg@01D84DD6.FC9912E0




_______________________________________________

observium mailing list --observium@lists.observium.org <mailto:observium@lists.observium.org>

To unsubscribe send an email toobservium-leave@lists.observium.org
<mailto:observium-leave@lists.observium.org>

Same thing, the colours match (though RRD's legend line is so thin it's hard to see now, it used to be a diagnonal line which was more visible)

I might switch back to using only the area indicator for legend colours, but this graph isn't really intended to be all that readable, it's useless for this purpose on most large devices:

adam.

Tony Guadagno via observium wrote on 27/09/2023 15:04:

Adam, yes, I see that, it’s on the transmit side that it does not make sense to me.  So receive (above 0) for gig0/0/0 is lt-green, but transmit(below 0) for gig0/0/0 is what?? Lt-purple?  How would I know that? In this particular case, the transmit and receive numbers are roughly equal…but if the traffic was more asymmetric…then how would I know that?

Tony Guadagno

O +1 585 577 1003

C +1 585 703 6700

E tonyg@guadagnoconsulting.com mailto:tonyg@guadagnoconsulting.com

cid:image001.jpg@01D84DD6.FC9912E0

*From:*Adam Armstrong via observium observium@lists.observium.org *Sent:* Wednesday, September 27, 2023 9:58 AM *To:* Observium observium@lists.observium.org *Cc:* Adam Armstrong adama@observium.org *Subject:* [Observium] Re: sorry if this is a dumb question, but how do i read traffic graphs???

The colours do actually match!

Though these graphs aren't really intended for you to be able to pick out individual ports, there are usually too many for that to be possible.

It looks like there's a bug in the colour generating code which is generating one too few colours and the last one is wrapping back to the first colour. The code is supposed to generate $entries number of colours between two points to make a gradient.

adam.

Tony Guadagno wrote on 27/09/2023 14:52:

Adam, I think I am starting to understand, however, here is a
snippet of the total traffic graph since 6am and another of
gig0/0/0 same time period:

Total:                               gig0/0/0

On the total graph, the transmits and receives from gig0/0/0 are
lt-purple and lt-green.  But in the legend for the total traffic,
those colors don’t match…I guess that is what I am confused about,
how do I know (on the total traffic graph) which interface is
contributing if the color on the graph does not match the color on
the legend?



Tony Guadagno

O +1 585 577 1003

C +1 585 703 6700

E tonyg@guadagnoconsulting.com <mailto:tonyg@guadagnoconsulting.com>

cid:image001.jpg@01D84DD6.FC9912E0

*From:*Adam Armstrong via observium
<observium@lists.observium.org>
<mailto:observium@lists.observium.org>
*Sent:* Wednesday, September 27, 2023 8:56 AM
*To:* Tony Guadagno via observium <observium@lists.observium.org>
<mailto:observium@lists.observium.org>
*Cc:* Adam Armstrong <adama@observium.org>
<mailto:adama@observium.org>
*Subject:* [Observium] Re: sorry if this is a dumb question, but
how do i read traffic graphs???

Hi Tony,

This is a stacked graph for a single device's total traffic, the
layers are stacked in the order they're presented on the legend.
The legend shows the "out" colours as lines because they're "fake"
drawn as lines to get positive values in the legend.

Gi0 and Gi0/0/2 in on this system have no traffic, so aren't
really relevant as they aren't visible on the graph. It's a little
odd the colours have cycled with only 4 entries, that's likely
just a quirk of the colour deciding function.

Anything positive on the axis is in/receive, and anything negative
is out/transmit, the same as our other graphs.

adam.

Tony Guadagno via observium wrote on 27/09/2023 13:45:


    Hi, after several years of using Observium, it just occurred
    to me recently that I am not sure how to read the traffic
    graphs.  For example, I always thought that above “0” on the
    horizontal axis was transmit and below was receive.  But as I
    look closer, that cannot be.  Also, the colors on the graph do
    not seem to line up with the legend…for example in this graph,
    I see 4 colors, light/dark green and light/dark purple.  But
    the legend seems to have the same color for g0/0/0 as g0.

    I guess my questions are:

    How are transmits and receives represented on the traffic graphs?

    Why are the colors in the graph not lining up with the legend?

    What does negative 100M represent?

    thanks



    Tony Guadagno

    O +1 585 577 1003

    C +1 585 703 6700

    E tonyg@guadagnoconsulting.com
    <mailto:tonyg@guadagnoconsulting.com>

    cid:image001.jpg@01D84DD6.FC9912E0





    _______________________________________________

    observium mailing list --observium@lists.observium.org
    <mailto:observium@lists.observium.org>

    To unsubscribe send an email toobservium-leave@lists.observium.org
    <mailto:observium-leave@lists.observium.org>

---

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Both used to be boxes, there's an RRD option to draw the legend as they're used in the graph. Like I said, the legend entries are actually for "fake" lines drawn on the graph which are covered by the areas, and then the outgoing stacked area is drawn separately without any legend attached to it. This is the only real way to get the legend in the order it's shown.

It might be useful to only turn on the complex legend markers when the graph actually legitimately has a mix of the two elements, like the per-port graph. If  you look at a port page, you can see the legends are a little more useful (though often perhaps showing hte line instead of the box where we draw both elements)

adam.

Tony Guadagno wrote on 27/09/2023 15:16:

Adam, ok, thanks for sticking with me….it never occurred to me that the lines were in the color…it is so hard to tell the difference.  I think I like the “stacked” graph (as it is now).  I think it would be very helpful for the legend colors on the Tx to be squares as well, I cannot see the color on the line.

Tony Guadagno

O +1 585 577 1003

C +1 585 703 6700

E tonyg@guadagnoconsulting.com mailto:tonyg@guadagnoconsulting.com

cid:image001.jpg@01D84DD6.FC9912E0

*From:*Adam Armstrong via observium observium@lists.observium.org *Sent:* Wednesday, September 27, 2023 10:10 AM *To:* Tony Guadagno via observium observium@lists.observium.org *Cc:* Adam Armstrong adama@observium.org *Subject:* [Observium] Re: sorry if this is a dumb question, but how do i read traffic graphs???

Same thing, the colours match (though RRD's legend line is so thin it's hard to see now, it used to be a diagnonal line which was more visible)

I might switch back to using only the area indicator for legend colours, but this graph isn't really intended to be all that readable, it's useless for this purpose on most large devices:

adam.

Tony Guadagno via observium wrote on 27/09/2023 15:04:

Adam, yes, I see that, it’s on the transmit side that it does not
make sense to me.  So receive (above 0) for gig0/0/0 is lt-green,
but transmit(below 0) for gig0/0/0 is what?? Lt-purple?  How would
I know that? In this particular case, the transmit and receive
numbers are roughly equal…but if the traffic was more
asymmetric…then how would I know that?

Tony Guadagno

O +1 585 577 1003

C +1 585 703 6700

E tonyg@guadagnoconsulting.com <mailto:tonyg@guadagnoconsulting.com>

cid:image001.jpg@01D84DD6.FC9912E0

*From:*Adam Armstrong via observium
<observium@lists.observium.org>
<mailto:observium@lists.observium.org>
*Sent:* Wednesday, September 27, 2023 9:58 AM
*To:* Observium <observium@lists.observium.org>
<mailto:observium@lists.observium.org>
*Cc:* Adam Armstrong <adama@observium.org>
<mailto:adama@observium.org>
*Subject:* [Observium] Re: sorry if this is a dumb question, but
how do i read traffic graphs???

The colours do actually match!



Though these graphs aren't really intended for you to be able to
pick out individual ports, there are usually too many for that to
be possible.

It looks like there's a bug in the colour generating code which is
generating one too few colours and the last one is wrapping back
to the first colour. The code is supposed to generate $entries
number of colours between two points to make a gradient.

adam.

Tony Guadagno wrote on 27/09/2023 14:52:


    Adam, I think I am starting to understand, however, here is a
    snippet of the total traffic graph since 6am and another of
    gig0/0/0 same time period:

    Total:                               gig0/0/0

    On the total graph, the transmits and receives from gig0/0/0
    are lt-purple and lt-green.  But in the legend for the total
    traffic, those colors don’t match…I guess that is what I am
    confused about, how do I know (on the total traffic graph)
    which interface is contributing if the color on the graph does
    not match the color on the legend?




    Tony Guadagno

    O +1 585 577 1003

    C +1 585 703 6700

    E tonyg@guadagnoconsulting.com
    <mailto:tonyg@guadagnoconsulting.com>

    cid:image001.jpg@01D84DD6.FC9912E0

    *From:*Adam Armstrong via observium
    <observium@lists.observium.org>
    <mailto:observium@lists.observium.org>
    *Sent:* Wednesday, September 27, 2023 8:56 AM
    *To:* Tony Guadagno via observium
    <observium@lists.observium.org>
    <mailto:observium@lists.observium.org>
    *Cc:* Adam Armstrong <adama@observium.org>
    <mailto:adama@observium.org>
    *Subject:* [Observium] Re: sorry if this is a dumb question,
    but how do i read traffic graphs???

    Hi Tony,

    This is a stacked graph for a single device's total traffic,
    the layers are stacked in the order they're presented on the
    legend. The legend shows the "out" colours as lines because
    they're "fake" drawn as lines to get positive values in the
    legend.

    Gi0 and Gi0/0/2 in on this system have no traffic, so aren't
    really relevant as they aren't visible on the graph. It's a
    little odd the colours have cycled with only 4 entries, that's
    likely just a quirk of the colour deciding function.

    Anything positive on the axis is in/receive, and anything
    negative is out/transmit, the same as our other graphs.

    adam.

    Tony Guadagno via observium wrote on 27/09/2023 13:45:



        Hi, after several years of using Observium, it just
        occurred to me recently that I am not sure how to read the
        traffic graphs.  For example, I always thought that above
        “0” on the horizontal axis was transmit and below was
        receive.  But as I look closer, that cannot be.  Also, the
        colors on the graph do not seem to line up with the
        legend…for example in this graph, I see 4 colors,
        light/dark green and light/dark purple.  But the legend
        seems to have the same color for g0/0/0 as g0.

        I guess my questions are:

        How are transmits and receives represented on the traffic
        graphs?

        Why are the colors in the graph not lining up with the legend?

        What does negative 100M represent?

        thanks




        Tony Guadagno

        O +1 585 577 1003

        C +1 585 703 6700

        E tonyg@guadagnoconsulting.com
        <mailto:tonyg@guadagnoconsulting.com>

        cid:image001.jpg@01D84DD6.FC9912E0






        _______________________________________________

        observium mailing list --observium@lists.observium.org
        <mailto:observium@lists.observium.org>

        To unsubscribe send an email toobservium-leave@lists.observium.org
        <mailto:observium-leave@lists.observium.org>




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To unsubscribe send an email toobservium-leave@lists.observium.org
<mailto:observium-leave@lists.observium.org>

We can't actually control how the indicators on the legend look beyond there being two modes, they're either always boxes, or rrd chooses between boxes and lines based on whether the element in the graph is an area or a line.

In the graph below the legend is attached to the line for each element, which is drawn over the area of the element to make it look a bit nicer. i.e. we draw in and out twice in these graphs, once as an area, and once as a line.

Interestingly you have the diagonal lines here rather than the straight line. I think it's because the total graph is perhaps using a different element type to fake the outgoing legend.

adam.

Tony Guadagno via observium wrote on 27/09/2023 15:56:

Adam, here is one of my per-port graphs:

I think the only reason this is more readable, is because there are only 2 elements and so it is easy to figure out which is which.  The lines in the legend here are not any more readable than the total traffic graph.  I think boxes would be better, but if you are saying that is not possible, what about thicker lines?  To show more color?

Tony Guadagno

O +1 585 577 1003

C +1 585 703 6700

E tonyg@guadagnoconsulting.com mailto:tonyg@guadagnoconsulting.com

cid:image001.jpg@01D84DD6.FC9912E0

*From:*Adam Armstrong via observium observium@lists.observium.org *Sent:* Wednesday, September 27, 2023 10:21 AM *To:* Observium observium@lists.observium.org *Cc:* Adam Armstrong adama@observium.org *Subject:* [Observium] Re: sorry if this is a dumb question, but how do i read traffic graphs???

Both used to be boxes, there's an RRD option to draw the legend as they're used in the graph. Like I said, the legend entries are actually for "fake" lines drawn on the graph which are covered by the areas, and then the outgoing stacked area is drawn separately without any legend attached to it. This is the only real way to get the legend in the order it's shown.

It might be useful to only turn on the complex legend markers when the graph actually legitimately has a mix of the two elements, like the per-port graph. If  you look at a port page, you can see the legends are a little more useful (though often perhaps showing hte line instead of the box where we draw both elements)

adam.

Tony Guadagno wrote on 27/09/2023 15:16:

Adam, ok, thanks for sticking with me….it never occurred to me
that the lines were in the color…it is so hard to tell the
difference.  I think I like the “stacked” graph (as it is now).  I
think it would be very helpful for the legend colors on the Tx to
be squares as well, I cannot see the color on the line.

Tony Guadagno

O +1 585 577 1003

C +1 585 703 6700

E tonyg@guadagnoconsulting.com <mailto:tonyg@guadagnoconsulting.com>

cid:image001.jpg@01D84DD6.FC9912E0

*From:*Adam Armstrong via observium
<observium@lists.observium.org>
<mailto:observium@lists.observium.org>
*Sent:* Wednesday, September 27, 2023 10:10 AM
*To:* Tony Guadagno via observium <observium@lists.observium.org>
<mailto:observium@lists.observium.org>
*Cc:* Adam Armstrong <adama@observium.org>
<mailto:adama@observium.org>
*Subject:* [Observium] Re: sorry if this is a dumb question, but
how do i read traffic graphs???

Same thing, the colours match (though RRD's legend line is so thin
it's hard to see now, it used to be a diagnonal line which was
more visible)



I might switch back to using only the area indicator for legend
colours, but this graph isn't really intended to be all that
readable, it's useless for this purpose on most large devices:



adam.


Tony Guadagno via observium wrote on 27/09/2023 15:04:


    Adam, yes, I see that, it’s on the transmit side that it does
    not make sense to me.  So receive (above 0) for gig0/0/0 is
    lt-green, but transmit(below 0) for gig0/0/0 is what??
    Lt-purple?  How would I know that? In this particular case,
    the transmit and receive numbers are roughly equal…but if the
    traffic was more asymmetric…then how would I know that?

    Tony Guadagno

    O +1 585 577 1003

    C +1 585 703 6700

    E tonyg@guadagnoconsulting.com
    <mailto:tonyg@guadagnoconsulting.com>

    cid:image001.jpg@01D84DD6.FC9912E0

    *From:*Adam Armstrong via observium
    <observium@lists.observium.org>
    <mailto:observium@lists.observium.org>
    *Sent:* Wednesday, September 27, 2023 9:58 AM
    *To:* Observium <observium@lists.observium.org>
    <mailto:observium@lists.observium.org>
    *Cc:* Adam Armstrong <adama@observium.org>
    <mailto:adama@observium.org>
    *Subject:* [Observium] Re: sorry if this is a dumb question,
    but how do i read traffic graphs???

    The colours do actually match!



    Though these graphs aren't really intended for you to be able
    to pick out individual ports, there are usually too many for
    that to be possible.

    It looks like there's a bug in the colour generating code
    which is generating one too few colours and the last one is
    wrapping back to the first colour. The code is supposed to
    generate $entries number of colours between two points to make
    a gradient.

    adam.

    Tony Guadagno wrote on 27/09/2023 14:52:



        Adam, I think I am starting to understand, however, here
        is a snippet of the total traffic graph since 6am and
        another of gig0/0/0 same time period:

        Total:                               gig0/0/0

        On the total graph, the transmits and receives from
        gig0/0/0 are lt-purple and lt-green.  But in the legend
        for the total traffic, those colors don’t match…I guess
        that is what I am confused about, how do I know (on the
        total traffic graph) which interface is contributing if
        the color on the graph does not match the color on the legend?





        Tony Guadagno

        O +1 585 577 1003

        C +1 585 703 6700

        E tonyg@guadagnoconsulting.com
        <mailto:tonyg@guadagnoconsulting.com>

        cid:image001.jpg@01D84DD6.FC9912E0

        *From:*Adam Armstrong via observium
        <observium@lists.observium.org>
        <mailto:observium@lists.observium.org>
        *Sent:* Wednesday, September 27, 2023 8:56 AM
        *To:* Tony Guadagno via observium
        <observium@lists.observium.org>
        <mailto:observium@lists.observium.org>
        *Cc:* Adam Armstrong <adama@observium.org>
        <mailto:adama@observium.org>
        *Subject:* [Observium] Re: sorry if this is a dumb
        question, but how do i read traffic graphs???

        Hi Tony,

        This is a stacked graph for a single device's total
        traffic, the layers are stacked in the order they're
        presented on the legend. The legend shows the "out"
        colours as lines because they're "fake" drawn as lines to
        get positive values in the legend.

        Gi0 and Gi0/0/2 in on this system have no traffic, so
        aren't really relevant as they aren't visible on the
        graph. It's a little odd the colours have cycled with only
        4 entries, that's likely just a quirk of the colour
        deciding function.

        Anything positive on the axis is in/receive, and anything
        negative is out/transmit, the same as our other graphs.

        adam.

        Tony Guadagno via observium wrote on 27/09/2023 13:45:




            Hi, after several years of using Observium, it just
            occurred to me recently that I am not sure how to read
            the traffic graphs.  For example, I always thought
            that above “0” on the horizontal axis was transmit and
            below was receive.  But as I look closer, that cannot
            be.  Also, the colors on the graph do not seem to line
            up with the legend…for example in this graph, I see 4
            colors, light/dark green and light/dark purple.  But
            the legend seems to have the same color for g0/0/0 as g0.

            I guess my questions are:

            How are transmits and receives represented on the
            traffic graphs?

            Why are the colors in the graph not lining up with the
            legend?

            What does negative 100M represent?

            thanks





            Tony Guadagno

            O +1 585 577 1003

            C +1 585 703 6700

            E tonyg@guadagnoconsulting.com
            <mailto:tonyg@guadagnoconsulting.com>

            cid:image001.jpg@01D84DD6.FC9912E0







            _______________________________________________

            observium mailing list --observium@lists.observium.org
            <mailto:observium@lists.observium.org>

            To unsubscribe send an email toobservium-leave@lists.observium.org
            <mailto:observium-leave@lists.observium.org>





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    <mailto:observium@lists.observium.org>

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    <mailto:observium-leave@lists.observium.org>

---

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The graphs are stacked. Most of the colours actually are slighly transparent, that's how we make the graphs look normal on both light and dark backgrounds.

In general we don't have elements of graphs "overlapping". If multiple things are being drawn in the same domain we usually use lines, when it's something being aggregated we just stack them, as in these graphs.

adam.

Christopher Barry via observium wrote on 27/09/2023 15:24:

Hi all, first post: Pardon me for jumping in - I likely have no idea what I'm talking about, but that has never stopped me from opening mouth/inserting foot in the past!

It _seems_ like if the solid colors were in fact transluscent, then you could readily see and tell where they were overlapped, and having two overlaid colors and thus interfaces's data occupying the same space would be more readily - wait for it... - _observable_.

Anyway, that popped into my head so I thought I would blurt it out. I'll go back to lurking now - sorry

Cheers, -C

On Wed, Sep 27, 2023 at 10:10 AM Adam Armstrong via observium <observium@lists.observium.org mailto:observium@lists.observium.org> wrote:

Same thing, the colours match (though RRD's legend line is so thin
it's hard to see now, it used to be a diagnonal line which was
more visible)



I might switch back to using only the area indicator for legend
colours, but this graph isn't really intended to be all that
readable, it's useless for this purpose on most large devices:



adam.


Tony Guadagno via observium wrote on 27/09/2023 15:04:

...

Adam, yes, I see that, it’s on the transmit side that it does not
make sense to me.  So receive (above 0) for gig0/0/0 is lt-green,
but transmit(below 0) for gig0/0/0 is what?? Lt-purple?  How
would I know that? In this particular case, the transmit and
receive numbers are roughly equal…but if the traffic was more
asymmetric…then how would I know that?

Tony Guadagno

O +1 585 577 1003

C +1 585 703 6700

E tonyg@guadagnoconsulting.com <mailto:tonyg@guadagnoconsulting.com>

cid:image001.jpg@01D84DD6.FC9912E0

*From:*Adam Armstrong via observium
<observium@lists.observium.org>
<mailto:observium@lists.observium.org>
*Sent:* Wednesday, September 27, 2023 9:58 AM
*To:* Observium <observium@lists.observium.org>
<mailto:observium@lists.observium.org>
*Cc:* Adam Armstrong <adama@observium.org>
<mailto:adama@observium.org>
*Subject:* [Observium] Re: sorry if this is a dumb question, but
how do i read traffic graphs???

The colours do actually match!



Though these graphs aren't really intended for you to be able to
pick out individual ports, there are usually too many for that to
be possible.

It looks like there's a bug in the colour generating code which
is generating one too few colours and the last one is wrapping
back to the first colour. The code is supposed to generate
$entries number of colours between two points to make a gradient.

adam.

Tony Guadagno wrote on 27/09/2023 14:52:

    Adam, I think I am starting to understand, however, here is a
    snippet of the total traffic graph since 6am and another of
    gig0/0/0 same time period:

    Total:                               gig0/0/0

    On the total graph, the transmits and receives from gig0/0/0
    are lt-purple and lt-green.  But in the legend for the total
    traffic, those colors don’t match…I guess that is what I am
    confused about, how do I know (on the total traffic graph)
    which interface is contributing if the color on the graph
    does not match the color on the legend?



    Tony Guadagno

    O +1 585 577 1003

    C +1 585 703 6700

    E tonyg@guadagnoconsulting.com
    <mailto:tonyg@guadagnoconsulting.com>

    cid:image001.jpg@01D84DD6.FC9912E0

    *From:*Adam Armstrong via observium
    <observium@lists.observium.org>
    <mailto:observium@lists.observium.org>
    *Sent:* Wednesday, September 27, 2023 8:56 AM
    *To:* Tony Guadagno via observium
    <observium@lists.observium.org>
    <mailto:observium@lists.observium.org>
    *Cc:* Adam Armstrong <adama@observium.org>
    <mailto:adama@observium.org>
    *Subject:* [Observium] Re: sorry if this is a dumb question,
    but how do i read traffic graphs???

    Hi Tony,

    This is a stacked graph for a single device's total traffic,
    the layers are stacked in the order they're presented on the
    legend. The legend shows the "out" colours as lines because
    they're "fake" drawn as lines to get positive values in the
    legend.

    Gi0 and Gi0/0/2 in on this system have no traffic, so aren't
    really relevant as they aren't visible on the graph. It's a
    little odd the colours have cycled with only 4 entries,
    that's likely just a quirk of the colour deciding function.

    Anything positive on the axis is in/receive, and anything
    negative is out/transmit, the same as our other graphs.

    adam.

    Tony Guadagno via observium wrote on 27/09/2023 13:45:


        Hi, after several years of using Observium, it just
        occurred to me recently that I am not sure how to read
        the traffic graphs.  For example, I always thought that
        above “0” on the horizontal axis was transmit and below
        was receive.  But as I look closer, that cannot be. 
        Also, the colors on the graph do not seem to line up with
        the legend…for example in this graph, I see 4 colors,
        light/dark green and light/dark purple.  But the legend
        seems to have the same color for g0/0/0 as g0.

        I guess my questions are:

        How are transmits and receives represented on the traffic
        graphs?

        Why are the colors in the graph not lining up with the
        legend?

        What does negative 100M represent?

        thanks



        Tony Guadagno

        O +1 585 577 1003

        C +1 585 703 6700

        E tonyg@guadagnoconsulting.com
        <mailto:tonyg@guadagnoconsulting.com>

        cid:image001.jpg@01D84DD6.FC9912E0





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