pptp vpn link to Alcatatel loses connection with data transf

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chapelhill
DD-WRT Novice


Joined: 19 Jun 2006
Posts: 8

PostPosted: Mon Jun 19, 2006 9:14    Post subject: pptp vpn link to Alcatatel loses connection with data transf Reply with quote
Trying to get VPN client working to an Alcatel based server.
Using DD-WRT v23 SP1 Final (05/16/06) vpn
Connection establishes with:
Quote:
MPPE 128-bit stateful compression enabled

Pings devices successfully on remote subnet but once significant amount of data moves the debug mode gives:

Quote:
rcvd [proto=0x55] 6a 1d 92 56 2d 0c 55 21 52 61 26 ea 77 63 2a 36 de ea 37 5e 6f 45 eb 64 ab b6 b2 ca 61 cb a1 99 ...
Unsupported protocol 0x55 received
sent [LCP ProtRej id=0x2 00 55 6a 1d 92 56 2d 0c 55 21 52 61 26 ea 77 63 2a 36 de ea 37 5e 6f 45 eb 64 ab b6 b2 ca 61 cb ...]
rcvd [proto=0xdc58] 31 4e 74 56 9f a8 38 72 c9 ec c0 d4 5a e6 72 7a 51 15 37 3d c9 18 87 7d b6 c4 14 19 8b e5 db 4a ...
Unsupported protocol 0xdc58 received
sent [LCP ProtRej id=0x3 dc 58 31 4e 74 56 9f a8 38 72 c9 ec c0 d4 5a e6 72 7a 51 15 37 3d c9 18 87 7d b6 c4 14 19 8b e5 ...]
rcvd [proto=0xf3] 4e 28 3d b8 62 57 36 a2 a2 1b 2b ae 04 68 50 4e 31 41 28 35 c3 d8 f8 c3 97 4d f3 76 e0 a0 c6 e8 ...
Unsupported protocol 0xf3 received
sent [LCP ProtRej id=0x4 00 f3 4e 28 3d b8 62 57 36 a2 a2 1b 2b ae 04 68 50 4e 31 41 28 35 c3 d8 f8 c3 97 4d f3 76 e0 a0 ...]
rcvd [proto=0x1e0e] 93 98 7c 5b 27 31 19 fb 79 aa 30 87 3d 92 28 84 20 08 6c f8 32 47 63 ee cf a5 ae e3 c3 07 e6 5a ...
Unsupported protocol 0x1e0e received
sent [LCP ProtRej id=0x5 1e 0e 93 98 7c 5b 27 31 19 fb 79 aa 30 87 3d 92 28 84 20 08 6c f8 32 47 63 ee cf a5 ae e3 c3 07 ...]
rcvd [proto=0xf013] 1f 06 01 65 69 50 17 40 7b c5 e2 26 96 34 ba 1d 18 a0 d1 d1 c9 01 61 40 27 78 2d c4 27 2d 4a f5 ...
Unsupported protocol 0xf013 received
sent [LCP ProtRej id=0x6 f0 13 1f 06 01 65 69 50 17 40 7b c5 e2 26 96 34 ba 1d 18 a0 d1 d1 c9 01 61 40 27 78 2d c4 27 2d ...]
rcvd [proto=0x81] a9 a1 41 82 49 5e 3b 6a 98 b7 b3 72 b2 86 66 99 6e 8c 64 b3 7a 02 1b 83 7e 8f 87 ba e6 88 6a f7 ...
Unsupported protocol 0x81 received
sent [LCP ProtRej id=0x7 00 81 a9 a1 41 82 49 5e 3b 6a 98 b7 b3 72 b2 86 66 99 6e 8c 64 b3 7a 02 1b 83 7e 8f 87 ba e6 88 ...]
rcvd [proto=0x59] 4c 41 36 96 e0 38 1d ab 23 96 89 0b df 70 ac dd 0c b8 af 7d da 92 d8 fa 61 84 cc 39 f3 74 2d fa ...
Unsupported protocol 0x59 received
sent [LCP ProtRej id=0x8 00 59 4c 41 36 96 e0 38 1d ab 23 96 89 0b df 70 ac dd 0c b8 af 7d da 92 d8 fa 61 84 cc 39 f3 74 ...]

I think this is related to incompatible compression, but cannot find any documentation related to how to disable compression.
Any Ideas?
Many Thanks in Anticipation
Chapelhill
Sponsor
Tornado
DD-WRT Developer/Maintainer


Joined: 07 Jun 2006
Posts: 2087
Location: Odessa, Ukraine

PostPosted: Mon Jun 19, 2006 12:31    Post subject: Reply with quote
These are the current options:

noccp
-ccp
Disable CCP negotiation

bsdcomp
Request BSD-Compress packet compression

nobsdcomp
-bsdcomp
don't allow BSD-Compress

deflate
request Deflate compression

nodeflate
don't allow Deflate compression

nodeflatedraft
don't use draft deflate

predictor1
request Predictor-1
nopredictor1
don't allow Predictor-1
-predictor1
don't allow Predictor-1

lzs
request Stac LZS
+lzs
request Stac LZS
nolzs
don't allow Stac LZS
-lzs
don't allow Stac LZS

MPPE
mppc
request MPPC compression
+mppc
request MPPC compression
nomppc
don't allow MPPC compression
-mppc

MPPE
mppe
request MPPE encryption
+mppe
request MPPE encryption
nomppe
don't allow MPPE encryption
-mppe
don't allow MPPE encryption

You also have MPPE sub-options....

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My preferred parallel jtag adapter:
TIAO Parallel adapter

Tjtag website - http://tjtag.com

Compiling DD-WRT on:
AMD Phenom II X6 1090T @ 3926.667 Mhz

Aptosid X64 - Debian SID X64
Ubuntu 10.10 X64 - Arch X64
chapelhill
DD-WRT Novice


Joined: 19 Jun 2006
Posts: 8

PostPosted: Mon Jun 19, 2006 19:45    Post subject: Reply with quote
Many thanks for the prompt response.

I have tried many different combinations, the one that worked was:
mppe required,stateless

Note it does not like a space after the comma.

Why it took me so long to try that one I don't know, but on large data transfers it works. I could not get any of the other options to have any noticeable effect, possibly because they were not the problem and probably because of the place I tried to put them.

Once again many thanks.
Chapelhill
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