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-rw-r--r--_tools/speed-gpon-eth.md35
1 files changed, 24 insertions, 11 deletions
diff --git a/_tools/speed-gpon-eth.md b/_tools/speed-gpon-eth.md
index 2a1b333..a180c72 100644
--- a/_tools/speed-gpon-eth.md
+++ b/_tools/speed-gpon-eth.md
@@ -61,15 +61,18 @@ layout: default
</div>
</form>
-<h1>Gpon calculator</h1>
+<h1>XG(S)-PON/GPON calculator</h1>
<form id="gpon-speed-mtu" novalidate>
<div class="form-floating mb-3">
<input step="1" type="number" class="form-control" placeholder="ONT number" name="gpon-ont" id="gpon-ont" value="10" min="1" max="128" required>
<label for="gpon-ont">ONT number</label>
</div>
<div class="form-floating mb-3">
- <input step="1" type="number" class="form-control" placeholder="GEM frame number" name="gpon-gem" id="gpon-gem" value="26" min="1" max="40" required>
- <label for="gpon-gem">GEM frame number</label>
+ <select class="form-select mb-3" placeholder="GPON Speed" name="gpon-speed" required>
+ <option value="2488.32" selected>GPON</option>
+ <option value="9953.28">XG(S)-PON/GPON</option>
+ </select>
+ <label for="gpon-speed">GPON speed</label>
</div>
<div class="mb-3">
<div class="form-check form-check-inline">
@@ -97,8 +100,12 @@ layout: default
<input type="submit" class="btn btn-primary" value="Calculate!">
</div>
<div class="form-floating mb-3">
+ <input step="1" type="number" class="form-control" placeholder="GEM frame number" name="gpon-gem-real" id="gpon-gem-real" min="1" max="40" readonly>
+ <label for="gpon-gem-real">GEM frame number</label>
+ </div>
+ <div class="form-floating mb-3">
<input type="number" class="form-control" placeholder="GPON Average Ethernet Frame Size (Byte)" name="gpon-average-packet-size" id="gpon-average-packet-size" readonly>
- <label for="gpon-average-packet-size">GPON Average Ethernet Frame Size (Byte) must be inside 1000-1500</label>
+ <label for="gpon-average-packet-size">GPON Average Ethernet Frame Size (Byte)</label>
</div>
<div class="form-floating mb-3">
<input type="number" class="form-control" placeholder="Theoretical maximum speed (Gbps)" name="gpon-maxSpeed" id="gpon-maxSpeed" readonly>
@@ -156,10 +163,10 @@ layout: default
var mtu = formdata.get('mtu');
var mss = mtu - coverheadip;
var overhead = overheadtcp + overheadeth + overheadfcs + overheadgap[formdata.get('speed')] + preamble + coverheadip;
- document.getElementById('overhead').value = overhead/mss * 100;
+ document.getElementById('overhead').value = ((1-mss /(overhead + mss)) * 100).toFixed(2);
var th = mss /(overhead + mss);
- document.getElementById('maxSpeed').value = th * formdata.get('speed');
+ document.getElementById('maxSpeed').value = (th * formdata.get('speed')).toFixed(2);
}
[...form.elements].map(e => e.parentNode).forEach(e => e.classList.toggle('was-validated', true));
});
@@ -197,15 +204,21 @@ layout: default
var cip = formdata.get('gpon-ip');
var coverheadip = formdata.get('gpon-ip') === '4' ? overheadipv4[formdata.get('gpon-ipv4protocol')] : overheadipv6[formdata.get('gpon-ipv6protocol')];
var overheadframeeth = overheadtcp + overheadeth + overheadfcs + coverheadip;
- var overheadgtc = overheadgem + formdata.get('gpon-gem') * (overheadpcbd+overheadframeeth);
- var payload = gtc - overheadgtc;
- document.getElementById('gpon-average-packet-size').value = payload/formdata.get('gpon-gem');
+ var gem, overheadgtc, payload;
+ for(gem = 0; gem < 40; gem++) {
+ overheadgtc = overheadgem + gem * (overheadpcbd+overheadframeeth);
+ payload = gtc - overheadgtc;
+ if(payload/gem < 1500) break;
+ }
+
+ document.getElementById('gpon-gem-real').value = gem;
+ document.getElementById('gpon-average-packet-size').value = (payload/gem).toFixed(2);
- document.getElementById('gpon-overhead').value = overheadgtc/payload * 100;
+ document.getElementById('gpon-overhead').value = ((1-payload/(payload+overheadgtc)) * 100).toFixed(2);
var th = payload /gtc;
- document.getElementById('gpon-maxSpeed').value = th * 2.48832;
+ document.getElementById('gpon-maxSpeed').value = (th * formdata.get('gpon-speed')).toFixed(2);
}
[...formgpon.elements].map(e => e.parentNode).forEach(e => e.classList.toggle('was-validated', true));
});