<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name="Generator" content="Microsoft Exchange Server">
<!-- converted from text --><style><!-- .EmailQuote { margin-left: 1pt; padding-left: 4pt; border-left: #800000 2px solid; } --></style>
</head>
<body>
<div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12.0pt; line-height:1.3; color:#1F497D">
<div>Hi,<br>
<br>
I agree with you, it should not be the case here.<br>
But, we are running over mobile networks, and the openvpn adds some overhead.<br>
<br>
Running some tcpdump shows that the packet lenght of the hello packet is just about 480, and that should be ok.<br>
<br>
If we change to another openvpn instance/interface and change over to that it works directly.<br>
<br>
I have also updated bird on our mainrouter to 1.6.3 (latest), but the issue still exist.
<br>
<br>
I have attached our config files (bird.conf (mainrouter), bird_client.conf (from one of the end router)).
<br>
My OSPF knowlege are limited, so I guess that I have made some errors :)<br>
<br>
The main feature we need is to distribute some external routes (10.3.50.0/24, 10.3.60.0/24), and distribute back the endpoints IP networks (10.98.x.x/30)<br>
<br>
/ Magnus<br>
</div>
<br>
</div>
<div id="x_quoted_header" style="clear:both">
<hr style="border:none; height:1px; color:#E1E1E1; background-color:#E1E1E1">
<div style="border:none; padding:3.0pt 0cm 0cm 0cm"><span style="font-size:11.0pt; font-family:'Calibri','sans-serif'"><b>Från:</b> Ondrej Zajicek <santiago@crfreenet.org><br>
<b>Sänt:</b> 13 okt. 2017 13:13<br>
<b>Till:</b> Magnus Löfqvist<br>
<b>Kopia:</b> bird-users@network.cz <br>
<b>Ämne:</b> Re: Limit on how many neighbors<br>
</span></div>
</div>
<br type="attribution">
</div>
<font size="2"><span style="font-size:10pt;">
<div class="PlainText">On Thu, Oct 12, 2017 at 11:43:03AM +0000, Magnus Löfqvist wrote:<br>
> Hi,<br>
> <br>
> We are running Bird with OSPF between embedded routers (openwrt) (mobile routers).<br>
> The routers are connected to our main server with openvpn, and we are using bird ontop on openvpn to deliver routes to the end routers.<br>
> <br>
> This have worked quite well, but today we notice some glitches.<br>
> We had some routers that did not finish election (ie, stand in init instead of being full).<br>
> When we count, there are exactly 100 devices that are in "full", and 3 in init.<br>
> <br>
> Are there any limit on how many neighbors/routers?<br>
<br>
Hi<br>
<br>
There is AFAIK no hard limit, but there is an issue that if you have too<br>
many neighbors, you end with Router-LSA that does not fit into MTU and<br>
will be sent using fragmented IP packets. Which usually works, but may be<br>
problematic. But that is probably not relevant, as if there were such<br>
problem, they would stuck in later stage of exchange and not in 'init'.<br>
<br>
So i have no idea why they stuck in 'init'. Isn't there any<br>
misconfiguration? Is there anything in logs? Did they corrected after<br>
restart?<br>
<br>
-- <br>
Elen sila lumenn' omentielvo<br>
<br>
Ondrej 'Santiago' Zajicek (email: santiago@crfreenet.org)<br>
OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net)<br>
"To err is human -- to blame it on a computer is even more so."<br>
</div>
</span></font>
</body>
</html>