WNDR3700 build issue? OpenVPN disconnecting

Post new topic   Reply to topic    DD-WRT Forum Index -> Advanced Networking
Goto page Previous  1, 2, 3, 4, 5  Next
Author Message
amakryss
DD-WRT Novice


Joined: 06 Jan 2011
Posts: 23

PostPosted: Sat May 28, 2011 23:15    Post subject: Reply with quote
I hear you man, well, this issue is more than fully escalated and fully documented, the cuplrit has been found. it was actually not functional for me outside my home, since clients of mine seldom have DSL modems with dual band, i.e. 5 GHZ.

So, until the issue is fixed, I am happily migrated to OpenWRT, Kamikaze bleeding edge, to be exact. I have openvpn and it works PERFECTLY.

If you or anyone else is interested on the setup (/etc/config/ files) to get the routes and masquerading right, I'll be happy to help.

Sad that this issue by the way is also present on a Buffalo. As of yet, no solution.

Will probably migrate back to dd-wrt once fixed. / For now, OpenWRT has absolutely no issues with wndr3700v2.
Sponsor
miyagi2
DD-WRT Novice


Joined: 23 Mar 2011
Posts: 5

PostPosted: Tue May 31, 2011 7:40    Post subject: Reply with quote
There is one solution that works to get openVPN running on DD-WRT but it is not very efficient.
If you set fragmentation to 200 it works:
Code:
tun-mtu 1500
fragment 200
mssfix 200

Because of the high fragmentation you will get a lot of overhead but at least it works.
amakryss
DD-WRT Novice


Joined: 06 Jan 2011
Posts: 23

PostPosted: Tue May 31, 2011 12:38    Post subject: Reply with quote
Lol, yeah.. and you also get 200kbps or less on a 40 mbps line.
CW
DD-WRT Novice


Joined: 20 May 2009
Posts: 22

PostPosted: Thu Jun 09, 2011 11:28    Post subject: Reply with quote
At least it's good to know the problem is software and fixable.

Have you heard anything about time frame?
amakryss
DD-WRT Novice


Joined: 06 Jan 2011
Posts: 23

PostPosted: Thu Jun 09, 2011 16:39    Post subject: Reply with quote
Nope, haven´t heard a thing. By the way, this issue is also present on Buffalo wzr-hp-a300h, (and it seems any other with the AR71** chipset).

*sigh*.

for wzr-hp-a300h I have DD-WRT connected via wireless to the DSL modem, since the disconnects also happen on that one.
somms
DD-WRT User


Joined: 21 Mar 2008
Posts: 261

PostPosted: Fri Jun 10, 2011 19:22    Post subject: Reply with quote
http://www.dd-wrt.com/phpBB2/viewtopic.php?t=140034

FWIW: Buffalo WZH-HP-G300NH doesn't seem to be having that problem w/OpenVPN and it sounds like this has been isolated to affecting particular model wireless routers...strange. Shocked
msquared
DD-WRT Novice


Joined: 05 Jul 2011
Posts: 3

PostPosted: Sat Jul 09, 2011 17:18    Post subject: Reply with quote
I am experiencing the same issue, however I don't have any ability to connect via wireless to my cable modem. Is there anything I can do to help further the work along to resolve this?

Thank you so much.
msquared
DD-WRT Novice


Joined: 05 Jul 2011
Posts: 3

PostPosted: Tue Aug 23, 2011 7:00    Post subject: Reply with quote
I don't see any builds since 17201. Does anyone know if one is planned with this issue solved?

Thank you
daveM
DD-WRT Novice


Joined: 02 May 2011
Posts: 41

PostPosted: Thu Oct 06, 2011 11:40    Post subject: Reply with quote
we have seen many, many complaints regarding the WNDR3700 and our openvpn services.

all complain of the same thing. any significant upload traffic crashes the openvpn process - this issue is 100% unique to the WNDR3700.

we have no unique startup scripts or anything, just ask customers to insert settings direct into services > vpn.

i got in contact with one client directly and removed fragment/mssfix manually for diagnostics. same issue occurred.
amakryss
DD-WRT Novice


Joined: 06 Jan 2011
Posts: 23

PostPosted: Thu Oct 06, 2011 13:37    Post subject: Reply with quote
Dave, does this suggest that your using the VPN tab eliminates the problem of the openvpn service crashing?
daveM
DD-WRT Novice


Joined: 02 May 2011
Posts: 41

PostPosted: Thu Oct 06, 2011 19:43    Post subject: Reply with quote
no, actually it was sort of an irrelevant point on my part, does not matter for this bug.
yozik04
DD-WRT Novice


Joined: 11 Jul 2011
Posts: 24

PostPosted: Sun Oct 16, 2011 14:52    Post subject: A solution that I found Reply with quote
I have spent many days to find proper config for OpenVPN on my WNDR3700.

I use
DD-WRT v24-sp2 (06/14/11) std
(SVN revision 17201)

Server configuration that works for me is in attachment.

Client configuration I use:
Code:
remote myvpn.address.com 1194

client
remote-cert-tls server
dev tun
proto udp
resolv-retry infinite
nobind
persist-key
persist-tun
float

ca   ca.crt
cert client.crt
key  client.key

ns-cert-type server
mute-replay-warnings

comp-lzo
verb 3

tun-mtu 1500
fragment 1024
mssfix
tun-mtu-extra 32


I can get enough stable link with that.

Strange that if I do not specify tun-mtu-extra 32 connection becomes unstable. I really do not unterstand what does this parameter stand for! If someone could explain me how this affects the link I will be happy.

If I put bigger fragment. For example 1100 link wont be stable anymore.

I connect to internet through PPPoE that eats 8 bytes of MTU. So the max is 1492 for me.

TCP Dump shows that all data packages have max length of 989
tcpdump -nnl -i en1 udp port 1194

My ISP gives me 5Mbps symmetrical link. This configuration allows me to get 3.2Mbps throughput scp through OpenVPN.

I have not tested it much. But it seems like stable.
daveM
DD-WRT Novice


Joined: 02 May 2011
Posts: 41

PostPosted: Thu Oct 20, 2011 20:39    Post subject: Reply with quote
this issue is still very much a major problem.
boexli
DD-WRT Novice


Joined: 17 Oct 2010
Posts: 14

PostPosted: Mon Oct 31, 2011 18:26    Post subject: Netgear WNDR3700 V2 Reply with quote
Are there any updates in regards to the openvpn client issue?

Any alpha release?

Every feedback is very much appreciated! Boexli
commandante
DD-WRT Novice


Joined: 31 Oct 2011
Posts: 2

PostPosted: Mon Oct 31, 2011 22:03    Post subject: Reply with quote
Hi,

I'm having the same issue.
Any news on a fix? Tnx!

Krs,
Commandante
Goto page Previous  1, 2, 3, 4, 5  Next Display posts from previous:    Page 3 of 5
Post new topic   Reply to topic    DD-WRT Forum Index -> Advanced Networking All times are GMT

Navigation

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum