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<h1 class="post-title" itemprop="name headline">Using vlan external netowrk fip，dragonflow dirtributed dnat does not work</h1>
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<p>My problem is :<br> Dragonflow distributed dnat can work ok when external network type is vlan ? if ok ,dragonflow distributed dnat support two or more external vlan network ?</p>
<p>Details below:</p>
<h1 id="Using-flat-external-netowork-fip-，-dragonflow-distributed-dnat-work-fine"><a href="#Using-flat-external-netowork-fip-，-dragonflow-distributed-dnat-work-fine" class="headerlink" title="Using flat external netowork fip ， dragonflow distributed dnat work fine"></a>Using flat external netowork fip ， dragonflow distributed dnat work fine</h1><figure class="highlight python"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line">+------------------------------------------------------+ +----------------------------------+</span><br><span class="line">| | | MARK: C |</span><br><span class="line">| br-ex enp0s3 |XXXXXXXXXXXXXXXXXXX| <span class="number">192.168</span><span class="number">.56</span><span class="number">.10</span> |</span><br><span class="line">| <span class="number">08</span>:<span class="number">00</span>:<span class="number">27</span>:<span class="number">12</span>:<span class="number">3</span>f:<span class="number">5</span>b | | external network gateway |</span><br><span class="line">| <span class="number">192.168</span><span class="number">.56</span><span class="number">.155</span> | | |</span><br><span class="line">+------------------------------------------------------+ +----------------------------------+</span><br><span class="line"> |</span><br><span class="line"> |</span><br><span class="line"> |</span><br><span class="line"> |</span><br><span class="line"> |</span><br><span class="line"> |</span><br><span class="line"> |</span><br><span class="line"> +-----------------------------------------------------------+ flows: A -> br-int(dnat) -> br-ex(l3 forward) -> C</span><br><span class="line"> | |</span><br><span class="line"> | |</span><br><span class="line"> | br-int |</span><br><span class="line"> | |</span><br><span class="line"> | |</span><br><span class="line"> +-----------------------------------------------------------+</span><br><span class="line"> |</span><br><span class="line"> |</span><br><span class="line"> | fa:<span class="number">16</span>:<span class="number">3</span>e:d4:<span class="number">60</span>:<span class="number">2</span>d</span><br><span class="line"> | flat floating ip <span class="number">192.168</span><span class="number">.56</span><span class="number">.55</span></span><br><span class="line"> | dragonflow distribute dnat</span><br><span class="line"> |</span><br><span class="line"> +--------------------+</span><br><span class="line"> | <span class="number">1.1</span><span class="number">.1</span><span class="number">.6</span> |</span><br><span class="line"> | Mark: A |</span><br><span class="line"> | |</span><br><span class="line"> | |</span><br><span class="line"> +--------------------+</span><br></pre></td></tr></table></figure>
<p>Instructions：</p>
<p>192.168.56.0/24 is my external flat network subnet. </p>
<p>using dragonflow dnat </p>
<p>A->C icmp flows: A -> br-int(dnat) -> br-ex(l3 forward) -> C</p>
<p>1.1.1.6 with fip ping gateway.( A->C connected). When icmp packet arrived at br-ex , layer3 forwarding is noraml.</p>
<p>Catch packets in br-ex interface.</p>
<figure class="highlight python"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">tcpdump: verbose output suppressed, use -v <span class="keyword">or</span> -vv <span class="keyword">for</span> full protocol decode</span><br><span class="line">listening on br-ex, link-type EN10MB (Ethernet), capture size <span class="number">262144</span> bytes</span><br><span class="line"><span class="number">21</span>:<span class="number">40</span>:<span class="number">50.340646</span> fa:<span class="number">16</span>:<span class="number">3</span>e:d4:<span class="number">60</span>:<span class="number">2</span>d > <span class="number">08</span>:<span class="number">00</span>:<span class="number">27</span>:<span class="number">12</span>:<span class="number">3</span>f:<span class="number">5</span>b, ethertype IPv4 (<span class="number">0x0800</span>), length <span class="number">98</span>: <span class="number">192.168</span><span class="number">.56</span><span class="number">.55</span> > <span class="number">114.114</span><span class="number">.114</span><span class="number">.114</span>: ICMP echo request, id <span class="number">22785</span>, seq <span class="number">188</span>, length <span class="number">64</span></span><br><span class="line"><span class="number">21</span>:<span class="number">40</span>:<span class="number">50.340672</span> <span class="number">08</span>:<span class="number">00</span>:<span class="number">27</span>:<span class="number">12</span>:<span class="number">3</span>f:<span class="number">5</span>b > be:e5:f2:da:<span class="number">42</span>:<span class="number">46</span>, ethertype IPv4 (<span class="number">0x0800</span>), length <span class="number">98</span>: <span class="number">192.168</span><span class="number">.56</span><span class="number">.55</span> > <span class="number">114.114</span><span class="number">.114</span><span class="number">.114</span>: ICMP echo request, id <span class="number">22785</span>, seq <span class="number">188</span>, length <span class="number">64</span></span><br><span class="line"><span class="number">21</span>:<span class="number">40</span>:<span class="number">51.341668</span> fa:<span class="number">16</span>:<span class="number">3</span>e:d4:<span class="number">60</span>:<span class="number">2</span>d > <span class="number">08</span>:<span class="number">00</span>:<span class="number">27</span>:<span class="number">12</span>:<span class="number">3</span>f:<span class="number">5</span>b, ethertype IPv4 (<span class="number">0x0800</span>), length <span class="number">98</span>: <span class="number">192.168</span><span class="number">.56</span><span class="number">.55</span> > <span class="number">114.114</span><span class="number">.114</span><span class="number">.114</span>: ICMP echo request, id <span class="number">22785</span>, seq <span class="number">189</span>, length <span class="number">64</span></span><br><span class="line"><span class="number">21</span>:<span class="number">40</span>:<span class="number">51.341696</span> <span class="number">08</span>:<span class="number">00</span>:<span class="number">27</span>:<span class="number">12</span>:<span class="number">3</span>f:<span class="number">5</span>b > be:e5:f2:da:<span class="number">42</span>:<span class="number">46</span>, ethertype IPv4 (<span class="number">0x0800</span>), length <span class="number">98</span>: <span class="number">192.168</span><span class="number">.56</span><span class="number">.55</span> > <span class="number">114.114</span><span class="number">.114</span><span class="number">.114</span>: ICMP echo request, id <span class="number">22785</span>, seq <span class="number">189</span>, length <span class="number">64</span></span><br></pre></td></tr></table></figure>
<p>tcpdump catch packets in enp0s3</p>
<figure class="highlight python"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">listening on enp0s3, link-type EN10MB (Ethernet), capture size <span class="number">262144</span> bytes</span><br><span class="line"><span class="number">21</span>:<span class="number">43</span>:<span class="number">01.601739</span> <span class="number">08</span>:<span class="number">00</span>:<span class="number">27</span>:<span class="number">12</span>:<span class="number">3</span>f:<span class="number">5</span>b > be:e5:f2:da:<span class="number">42</span>:<span class="number">46</span>, ethertype IPv4 (<span class="number">0x0800</span>), length <span class="number">98</span>: <span class="number">192.168</span><span class="number">.56</span><span class="number">.55</span> > <span class="number">114.114</span><span class="number">.114</span><span class="number">.114</span>: ICMP echo request, id <span class="number">22785</span>, seq <span class="number">319</span>, length <span class="number">64</span></span><br><span class="line"><span class="number">21</span>:<span class="number">43</span>:<span class="number">01.609858</span> be:e5:f2:da:<span class="number">42</span>:<span class="number">46</span> > fa:<span class="number">16</span>:<span class="number">3</span>e:d4:<span class="number">60</span>:<span class="number">2</span>d, ethertype IPv4 (<span class="number">0x0800</span>), length <span class="number">98</span>: <span class="number">114.114</span><span class="number">.114</span><span class="number">.114</span> > <span class="number">192.168</span><span class="number">.56</span><span class="number">.55</span>: ICMP echo reply, id <span class="number">22785</span>, seq <span class="number">319</span>, length <span class="number">64</span></span><br><span class="line"><span class="number">21</span>:<span class="number">43</span>:<span class="number">02.602343</span> <span class="number">08</span>:<span class="number">00</span>:<span class="number">27</span>:<span class="number">12</span>:<span class="number">3</span>f:<span class="number">5</span>b > be:e5:f2:da:<span class="number">42</span>:<span class="number">46</span>, ethertype IPv4 (<span class="number">0x0800</span>), length <span class="number">98</span>: <span class="number">192.168</span><span class="number">.56</span><span class="number">.55</span> > <span class="number">114.114</span><span class="number">.114</span><span class="number">.114</span>: ICMP echo request, id <span class="number">22785</span>, seq <span class="number">320</span>, length <span class="number">64</span></span><br><span class="line"><span class="number">21</span>:<span class="number">43</span>:<span class="number">02.611243</span> be:e5:f2:da:<span class="number">42</span>:<span class="number">46</span> > fa:<span class="number">16</span>:<span class="number">3</span>e:d4:<span class="number">60</span>:<span class="number">2</span>d, ethertype IPv4 (<span class="number">0x0800</span>), length <span class="number">98</span>: <span class="number">114.114</span><span class="number">.114</span><span class="number">.114</span> > <span class="number">192.168</span><span class="number">.56</span><span class="number">.55</span>: ICMP echo reply, id <span class="number">22785</span>, seq <span class="number">320</span>, length <span class="number">64</span></span><br></pre></td></tr></table></figure>
<h1 id="Using-vlan-external-netowrk-fip，dragonflow-dirtributed-dnat-does-not-work"><a href="#Using-vlan-external-netowrk-fip，dragonflow-dirtributed-dnat-does-not-work" class="headerlink" title="Using vlan external netowrk fip，dragonflow dirtributed dnat does not work"></a>Using vlan external netowrk fip，dragonflow dirtributed dnat does not work</h1><figure class="highlight python"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line">+------------------------------------------------------+ +----------------------------------+</span><br><span class="line">| | | MARK: C |</span><br><span class="line">| br-ex enp0s3 |XXXXXXXXXXXXXXXXXXX| <span class="number">192.168</span><span class="number">.57</span><span class="number">.10</span> |</span><br><span class="line">| <span class="number">08</span>:<span class="number">00</span>:<span class="number">27</span>:<span class="number">12</span>:<span class="number">3</span>f:<span class="number">5</span>b | | external vlan network gateway |</span><br><span class="line">| <span class="number">192.168</span><span class="number">.56</span><span class="number">.155</span> | | |</span><br><span class="line">+------------------------------------------------------+ +----------------------------------+</span><br><span class="line"> |</span><br><span class="line"> | +</span><br><span class="line"> | |</span><br><span class="line"> | |</span><br><span class="line"> | |</span><br><span class="line"> | |</span><br><span class="line"> | v</span><br><span class="line"> +-----------------------------------------------------------+ flows: A -> br-int(dnat) -> br-ex(l3 forward) -> C</span><br><span class="line"> | |</span><br><span class="line"> | |</span><br><span class="line"> | br-int | work err here</span><br><span class="line"> | |</span><br><span class="line"> | |</span><br><span class="line"> +-----------------------------------------------------------+</span><br><span class="line"> |</span><br><span class="line"> |</span><br><span class="line"> | fa:<span class="number">16</span>:<span class="number">3</span>e:<span class="number">39</span>:<span class="number">63</span>:c2</span><br><span class="line"> | vlan external network fip : <span class="number">192.168</span><span class="number">.57</span><span class="number">.159</span></span><br><span class="line"> |</span><br><span class="line"> |</span><br><span class="line"> +--------------------+</span><br><span class="line"> | <span class="number">1.1</span><span class="number">.1</span><span class="number">.6</span> |</span><br><span class="line"> | Mark: A |</span><br><span class="line"> | |</span><br><span class="line"> | |</span><br><span class="line"> +--------------------+</span><br></pre></td></tr></table></figure>
<p>Catch packets in br-ex interface. and I find that icmp packet can not be l3 forwarded in br-ex . A -> c disconnect.</p>
<figure class="highlight python"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">stack@p-controller:~/devstack$ sudo tcpdump -i br-ex -ne</span><br><span class="line">tcpdump: verbose output suppressed, use -v <span class="keyword">or</span> -vv <span class="keyword">for</span> full protocol decode</span><br><span class="line">listening on br-ex, link-type EN10MB (Ethernet), capture size <span class="number">262144</span> bytes</span><br><span class="line"><span class="number">21</span>:<span class="number">58</span>:<span class="number">36.278770</span> fa:<span class="number">16</span>:<span class="number">3</span>e:<span class="number">39</span>:<span class="number">63</span>:c2 > <span class="number">08</span>:<span class="number">00</span>:<span class="number">27</span>:<span class="number">12</span>:<span class="number">3</span>f:<span class="number">5</span>b, ethertype <span class="number">802.1</span>Q (<span class="number">0x8100</span>), length <span class="number">102</span>: vlan <span class="number">207</span>, p <span class="number">0</span>, ethertype IPv4, <span class="number">192.168</span><span class="number">.57</span><span class="number">.159</span> > <span class="number">114.114</span><span class="number">.114</span><span class="number">.114</span>: ICMP echo request, id <span class="number">23041</span>, seq <span class="number">15</span>, length <span class="number">64</span></span><br><span class="line"><span class="number">21</span>:<span class="number">58</span>:<span class="number">37.279352</span> fa:<span class="number">16</span>:<span class="number">3</span>e:<span class="number">39</span>:<span class="number">63</span>:c2 > <span class="number">08</span>:<span class="number">00</span>:<span class="number">27</span>:<span class="number">12</span>:<span class="number">3</span>f:<span class="number">5</span>b, ethertype <span class="number">802.1</span>Q (<span class="number">0x8100</span>), length <span class="number">102</span>: vlan <span class="number">207</span>, p <span class="number">0</span>, ethertype IPv4, <span class="number">192.168</span><span class="number">.57</span><span class="number">.159</span> > <span class="number">114.114</span><span class="number">.114</span><span class="number">.114</span>: ICMP echo request, id <span class="number">23041</span>, seq <span class="number">16</span>, length <span class="number">64</span></span><br><span class="line"><span class="number">21</span>:<span class="number">58</span>:<span class="number">38.279781</span> fa:<span class="number">16</span>:<span class="number">3</span>e:<span class="number">39</span>:<span class="number">63</span>:c2 > <span class="number">08</span>:<span class="number">00</span>:<span class="number">27</span>:<span class="number">12</span>:<span class="number">3</span>f:<span class="number">5</span>b, ethertype <span class="number">802.1</span>Q (<span class="number">0x8100</span>), length <span class="number">102</span>: vlan <span class="number">207</span>, p <span class="number">0</span>, ethertype IPv4, <span class="number">192.168</span><span class="number">.57</span><span class="number">.159</span> > <span class="number">114.114</span><span class="number">.114</span><span class="number">.114</span>: ICMP echo request, id <span class="number">23041</span>, seq <span class="number">17</span>, length <span class="number">64</span></span><br></pre></td></tr></table></figure>
<p>My problem is :</p>
<p> Dragonflow distributed dnat can work ok when external network type is vlan ? if ok ,dragonflow distributed dnat support two or more external vlan network ?</p>
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isfetched = true;
$('.popup').detach().appendTo('.header-inner');
var datas = isXml ? $("entry", res).map(function() {
return {
title: $("title", this).text(),
content: $("content",this).text(),
url: $("url" , this).text()
};
}).get() : res;
var input = document.getElementById(search_id);
var resultContent = document.getElementById(content_id);
var inputEventFunction = function() {
var searchText = input.value.trim().toLowerCase();
var keywords = searchText.split(/[\s\-]+/);
if (keywords.length > 1) {
keywords.push(searchText);
}
var resultItems = [];
if (searchText.length > 0) {
// perform local searching
datas.forEach(function(data) {
var isMatch = false;
var hitCount = 0;
var searchTextCount = 0;
var title = data.title.trim();
var titleInLowerCase = title.toLowerCase();
var content = data.content.trim().replace(/<[^>]+>/g,"");
var contentInLowerCase = content.toLowerCase();
var articleUrl = decodeURIComponent(data.url);
var indexOfTitle = [];
var indexOfContent = [];
// only match articles with not empty titles
if(title != '') {
keywords.forEach(function(keyword) {
function getIndexByWord(word, text, caseSensitive) {
var wordLen = word.length;
if (wordLen === 0) {
return [];
}
var startPosition = 0, position = [], index = [];
if (!caseSensitive) {
text = text.toLowerCase();
word = word.toLowerCase();
}
while ((position = text.indexOf(word, startPosition)) > -1) {
index.push({position: position, word: word});
startPosition = position + wordLen;
}
return index;
}
indexOfTitle = indexOfTitle.concat(getIndexByWord(keyword, titleInLowerCase, false));
indexOfContent = indexOfContent.concat(getIndexByWord(keyword, contentInLowerCase, false));
});
if (indexOfTitle.length > 0 || indexOfContent.length > 0) {
isMatch = true;
hitCount = indexOfTitle.length + indexOfContent.length;
}
}
// show search results
if (isMatch) {
// sort index by position of keyword
[indexOfTitle, indexOfContent].forEach(function (index) {
index.sort(function (itemLeft, itemRight) {
if (itemRight.position !== itemLeft.position) {
return itemRight.position - itemLeft.position;
} else {
return itemLeft.word.length - itemRight.word.length;
}
});
});
// merge hits into slices
function mergeIntoSlice(text, start, end, index) {
var item = index[index.length - 1];
var position = item.position;
var word = item.word;
var hits = [];
var searchTextCountInSlice = 0;
while (position + word.length <= end && index.length != 0) {
if (word === searchText) {
searchTextCountInSlice++;
}
hits.push({position: position, length: word.length});
var wordEnd = position + word.length;
// move to next position of hit