<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:"Calibri Light";
panose-1:2 15 3 2 2 2 4 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Aharoni;
panose-1:2 1 8 3 2 1 4 3 2 3;}
@font-face
{font-family:"Century Gothic";
panose-1:2 11 5 2 2 2 2 2 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.E-mailStijl17
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 70.85pt 70.85pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="#0563C1" vlink="#954F72">
<div class="WordSection1">
<p class="MsoNormal"><span style="color:#1F497D">Hello, <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I have a problem, Bgp session between birdserver and bgp-client stays in Connect. I had configured bird server manually in the past and I know that you must with command ”igp table master4;” (in the bgp template
of client), refer him the way of finding directly-connected interface route. But I don’t see such a configuration in yours. How does yours work?</span><o:p></o:p></p>
<p class="MsoNormal">I can ping from both birdserver and bgp-peer each other. And telnet from birdserver to bgp-peer:179 works
<b>but</b> telnet from bgp-peer to birdserver:179 <b>doesn’t work</b>. I’m sure that is not a firewall issue.TCP 3-way handshake of one direction(client:randomPort to Bird:179) is not successful I have captured packets with tcpdump in bird and I see that the
SYN packets from my client(192.168.184.4) is received, but no SYN-ACK from bird is sent as reply. If session begins from bird to the client(192.168.184.4:179) I see SYN-ACK and ACK<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">May I ask you to help me to resolve the issue?<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span lang="NL">root@bird01-NEW:~# netstat -nltp | grep 179<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="NL">tcp 0 0 192.168.184.1:179 0.0.0.0:* LISTEN 2400/bird<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="NL"> <o:p></o:p></span></p>
<p class="MsoNormal">*******************************************<o:p></o:p></p>
<p class="MsoNormal">root@bird01-NEW:~# ps -ef | grep bird<o:p></o:p></p>
<p class="MsoNormal">root 2400 1 0 12:25 ? 00:00:00 /usr/sbin/bird -c /usr/local/etc/bird/bird-rs00-ipv4.conf -s /var/run/bird/bird-rs00- ipv4.ctl<o:p></o:p></p>
<p class="MsoNormal">root 2697 2175 0 12:26 pts/1 00:00:00 grep --color=auto bird<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">root@bird01-NEW:~# tcpdump -i ens192 host 192.168.184.4 && port 179<o:p></o:p></p>
<p class="MsoNormal">tcpdump: verbose output suppressed, use -v or -vv for full protocol decode<o:p></o:p></p>
<p class="MsoNormal">listening on ens192, link-type EN10MB (Ethernet), capture size 262144 bytes<o:p></o:p></p>
<p class="MsoNormal">12:35:06.894079 IP 192.168.184.4.64541 > bird01-NEW.bgp: Flags [S], seq 1259990989, win 16384, options [mss 1950], length 0<o:p></o:p></p>
<p class="MsoNormal">12:35:08.898288 IP 192.168.184.4.64541 > bird01-NEW.bgp: Flags [S], seq 1259990989, win 16384, options [mss 1950], length 0<o:p></o:p></p>
<p class="MsoNormal">12:35:12.899725 IP 192.168.184.4.64541 > bird01-NEW.bgp: Flags [S], seq 1259990989, win 16384, options [mss 1950], length 0<o:p></o:p></p>
<p class="MsoNormal">12:35:13.450636 IP bird01-NEW.53075 > 192.168.184.4.bgp: Flags [S], seq 4069192083, win 64240, options [nop,nop,md5 shared secret not supplied with -M, can't check - de5e7c3156f705570daf560d4e26126c,mss 1460,nop,nop,sackOK,nop,wscale 7],
length 0<o:p></o:p></p>
<p class="MsoNormal">12:35:13.452216 IP 192.168.184.4.bgp > bird01-NEW.53075: Flags [S.], seq 120077824, ack 4069192084, win 16384, options [mss 1460], length 0<o:p></o:p></p>
<p class="MsoNormal">12:35:15.449811 IP 192.168.184.4.bgp > bird01-NEW.53075: Flags [S.], seq 120077824, ack 4069192084, win 16384, options [mss 1460], length 0<o:p></o:p></p>
<p class="MsoNormal">12:35:19.451138 IP 192.168.184.4.bgp > bird01-NEW.53075: Flags [S.], seq 120077824, ack 4069192084, win 16384, options [mss 1460], length 0<o:p></o:p></p>
<p class="MsoNormal">12:35:20.902836 IP 192.168.184.4.64541 > bird01-NEW.bgp: Flags [S], seq 1259990989, win 16384, options [mss 1950], length 0<o:p></o:p></p>
<p class="MsoNormal">12:35:27.453709 IP 192.168.184.4.bgp > bird01-NEW.53075: Flags [S.], seq 120077824, ack 4069192084, win 16384, options [mss 1460], length 0<o:p></o:p></p>
<p class="MsoNormal">12:35:46.986676 IP bird01-NEW.53075 > 192.168.184.4.bgp: Flags [S], seq 4069192083, win 64240, options [nop,nop,md5 shared secret not supplied with -M, can't check - de5e7c3156f705570daf560d4e26126c,mss 1460,nop,nop,sackOK,nop,wscale 7],
length 0<o:p></o:p></p>
<p class="MsoNormal">12:35:46.990027 IP 192.168.184.4.bgp > bird01-NEW.53075: Flags [S.], seq 2697219754, ack 4069192084, win 16384, options [mss 1460], length 0<o:p></o:p></p>
<p class="MsoNormal">12:35:48.987024 IP 192.168.184.4.bgp > bird01-NEW.53075: Flags [S.], seq 2697219754, ack 4069192084, win 16384, options [mss 1460], length 0<o:p></o:p></p>
<p class="MsoNormal">12:35:52.106596 ARP, Request who-has 192.168.184.4 tell bird01-NEW, length 28<o:p></o:p></p>
<p class="MsoNormal">12:35:52.107789 ARP, Reply 192.168.184.4 is-at 54:78:1a:f4:c0:c4 (oui Unknown), length 46<o:p></o:p></p>
<p class="MsoNormal">12:35:52.988634 IP 192.168.184.4.bgp > bird01-NEW.53075: Flags [S.], seq 2697219754, ack 4069192084, win 16384, options [mss 1460], length 0<o:p></o:p></p>
<p class="MsoNormal">12:36:00.991970 IP 192.168.184.4.bgp > bird01-NEW.53075: Flags [S.], seq 2697219754, ack 4069192084, win 16384, options [mss 1460], length 0<o:p></o:p></p>
<p class="MsoNormal">12:36:11.376982 IP 192.168.184.4.54255 > bird01-NEW.bgp: Flags [S], seq 3131800043, win 16384, options [mss 1950], length 0<o:p></o:p></p>
<p class="MsoNormal">12:36:13.380743 IP 192.168.184.4.54255 > bird01-NEW.bgp: Flags [S], seq 3131800043, win 16384, options [mss 1950], length 0<o:p></o:p></p>
<p class="MsoNormal">12:36:17.382021 IP 192.168.184.4.54255 > bird01-NEW.bgp: Flags [S], seq 3131800043, win 16384, options [mss 1950], length 0<o:p></o:p></p>
<p class="MsoNormal">12:36:21.619634 IP bird01-NEW.40369 > 192.168.184.4.bgp: Flags [S], seq 3340451196, win 64240, options [nop,nop,md5 shared secret not supplied with -M, can't check - cf33042552b287b450d84c156cf9e594,mss 1460,nop,nop,sackOK,nop,wscale 7],
length 0<o:p></o:p></p>
<p class="MsoNormal">12:36:21.621677 IP 192.168.184.4.bgp > bird01-NEW.40369: Flags [S.], seq 1339172962, ack 3340451197, win 16384, options [mss 1460], length 0<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="0" style="width:863.6pt;margin-left:32.4pt;border-collapse:collapse">
<tbody>
<tr>
<td width="1151" colspan="2" valign="top" style="width:863.6pt;padding:0cm 5.4pt 0cm 5.4pt">
<p class="MsoNormal"><b><span style="font-family:"Calibri Light",sans-serif;color:#475A68;mso-fareast-language:NL">Met vriendelijke groet,</span></b><span lang="NL" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#475A68;mso-fareast-language:NL"><o:p></o:p></span></p>
</td>
</tr>
<tr>
<td width="922" valign="top" style="width:691.5pt;padding:0cm 5.4pt 0cm 5.4pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;mso-fareast-language:NL"><o:p> </o:p></span></p>
</td>
<td width="229" valign="top" style="width:172.1pt;padding:0cm 5.4pt 0cm 5.4pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;mso-fareast-language:NL"><o:p> </o:p></span></p>
</td>
</tr>
<tr>
<td width="922" valign="top" style="width:691.5pt;padding:0cm 5.4pt 0cm 5.4pt">
<p class="MsoNormal"><b><span style="font-family:Aharoni;color:#D7007F;mso-fareast-language:NL">Samaneh Amini<o:p></o:p></span></b></p>
</td>
<td width="229" valign="top" style="width:172.1pt;padding:0cm 5.4pt 0cm 5.4pt">
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;mso-fareast-language:NL"><o:p> </o:p></span></p>
</td>
</tr>
<tr>
<td width="922" valign="top" style="width:691.5pt;padding:0cm 5.4pt 0cm 5.4pt">
<p class="MsoNormal" style="text-align:justify"><span lang="NL" style="font-size:10.0pt;font-family:"Century Gothic",sans-serif;color:#A6A6A6;mso-style-textfill-fill-color:#A6A6A6;mso-style-textfill-fill-alpha:100.0%;mso-fareast-language:NL">Netwerkengineer
</span><span lang="NL" style="font-size:10.0pt;font-family:"Century Gothic",sans-serif;color:#A6A6A6;mso-fareast-language:NL">ma, di, wo, do, vr aanwezig</span><span lang="NL" style="font-size:10.0pt;font-family:"Century Gothic",sans-serif;color:#A6A6A6;mso-style-textfill-fill-color:#A6A6A6;mso-style-textfill-fill-alpha:100.0%;mso-fareast-language:NL">
<o:p></o:p></span></p>
</td>
<td width="229" valign="top" style="width:172.1pt;padding:0cm 5.4pt 0cm 5.4pt"></td>
</tr>
</tbody>
</table>
<p class="MsoNormal"><span style="color:#1F497D"><img width="465" height="102" style="width:4.8437in;height:1.0625in" id="Afbeelding_x0020_1" src="cid:image001.png@01D86B8C.61E264D0" alt="DDFR-handtekening verkort"></span><span lang="NL"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="NL"><o:p> </o:p></span></p>
</div>
</body>
</html>