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Hi,

Here is an excerpt from a document I prepared on SCTP implementations.
Perhaps this will help you setup a successful IPv6 test.

***
chat: a simple talk program, several of these can connect to an
echo_tool-server started with the -b flag.
combined_server: one server program, that acts as echo_server,
discard_serevr and daytime_server
daytime_server: a server that tells you the time, if you connect to
it via the terminal-program.
daytime_simple: idem, but uses sctpd
discard_server: discard everything that is sent to it
echo_monitor: gives stats about an echo server
echo_server: echoes all back, that a client sends to it
echo_tool: a more complex and sophisticated echo_server, prints stats
monitor: monitors stats of an association, and prints them nicely
formatted in a terminal window (uses ncurses).
mulp: an obsolete, old, very confusing, hacky program, this was the first
one we used at all.
test_tool: this should help you test and understand the protocol. It reads
script files and performs respective actions. Very nice.

The utilities found in ./sctpd_programs are similar except that SCTP daemon
in ./sctpd must be started so daemon utilities can use SCTP implementation
from daemon. Knowing what each utility does is only the first step, making
them work together is difficult enough as well. Here is another excerpt from
the mailing list explaining some successful usage settings:

If you are compiling on one machine and moving programs to other
nodes, you might consider using the -static option when you compile
to keep from managing libsctp.x versions every time there is a new
release.

Node 1 and 2: become superuser to allow raw socket opens

Discard Server
Node 1: run "discard_server -V -s 192.168.1.4" (be sure to use your IP
address of node 1)
Node 2: run "terminal -V -r 9 -s 192.168.1.3 -d 192.168.1.4

Echo Server
Node 1: run "echo_server -V -s 192.168.1.4" (be sure to use your IP address
of node 1)
Node 2: run "terminal -V -r 7 -s 192.168.1.3 -d 192.168.1.4

Daytime Server
Node 1: run "daytime_server -V -s 192.168.1.4" (be sure to use your IP
address of node 1)
Node 2: run "terminal -V -r 13 -s 192.168.1.3 -d 192.168.1.4

Combined Server
Node 1: run "combined_server -V -s 192.168.1.4" (be sure to use your IP
address of node 1)
Node 2: for echo run "terminal -V -r 7 -s 192.168.1.3 -d 192.168.1.4
for discard run "terminal -V -r 9 -s 192.168.1.3 -d
192.168.1.4
for daytime run "terminal -V -r 13 -s 192.168.1.3 -d
192.168.1.4

Let's go through one scenario with two nodes having IPv6 addresses. The
server will be node1 with IPv6 address fec0::1:250:b7ff:fe14:35be and the
client will be node2 with IPv6 address fec0::1:250:b7ff:fe14:35c4.
Initially, we start an echo server on node1:

node1% cd ./programs
node1% ./echo_server -V -s fec0::1:250:b7ff:fe14:35be

We are ready to connect to node1 from client node2 and we will use
'terminal' program. The 'r' option is to specify which port to use. For some
reason, this has a direct effect on whether the connection will work or not
and this has not been officially documented anywhere. Once connected to
node1, anything you type will be echoed back to you and you only.

node2% ./terminal -V -r 7 -d fec0::1:250:b7ff:fe14:35be -s
fec0::1:250:b7ff:fe14:35c4

Try typing a few things, run a sniffer to convince yourself that traffic is
truly IPv6 SCTP. Remember that SCTP protocol number is 132 in case your
sniffer doesn't explicitly support SCTP protocol.
***

If you have any questions, let me know,

David



> -----Original Message-----
> From: Parmar, Pankaj N
> [mailto:pankaj.n.parmar AT intel.com]
> Sent: Tuesday, March 05, 2002 8:31 PM
> To:
> 'discussion AT sctp.de'
> Subject: [SCTP-Discussion] sctptest not working with IPv6 addresses
>
>
> I recently installed sctplib-1.0.0-pre17 on two Linux (
> RedHat 7.2) boxes. I
> have been having problems with sctptest (and sctpsockettest)
> while using
> IPv6 addresses. Each m/c has only one interface. I can ping6
> both from each
> other, so IPv6 addresses are right.
>
> I first tried both these sample apps with IPv4 only addresses
> and works
> great. When I tried with IPv6 address, here's the error I get
> on client
> side.
>
> Server Side command:
> ./sctptest -server -co -use-ipv6 -local=fe80:202:b3ff:fe64:ddfc
> -localport=5001
>
> Client Side command:
>
> ./sctptest -client -co -use-ipv6 -local=fe80:2d0:b7ff:fe68:2efb
> -remote=fe80:202:b3ff:fe64:ddfc -remoteport=5001
>
> On issuing this command, I get the following error:
>
> "ERROR: ConnectionOrientedClient - associate() failed!"
>
> Any help is appreciated.
>
> Thanks,
>
> -Pankaj
> _______________________________________________
> discussion mailing list
> discussion AT sctp.de
> http://www.sctp.de/mailman/listinfo/discussion
>

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• [SCTP-Discussion] sctptest not working with IPv6 addresses, Parmar, Pankaj N, 03/06/2002
  • Re: [SCTP-Discussion] sctptest not working with IPv6 addresses, Thomas Dreibholz, 03/06/2002
  • <Possible follow-up(s)>
  • RE: [SCTP-Discussion] sctptest not working with IPv6 addresses, David Gordon (LMC), 03/06/2002
    • Re: [SCTP-Discussion] sctptest not working with IPv6 addresses, Andreas Jungmaier, 03/06/2002
  • RE: [SCTP-Discussion] sctptest not working with IPv6 addresses, Parmar, Pankaj N, 03/07/2002
    • Re: [SCTP-Discussion] sctptest not working with IPv6 addresses, Michael Tuexen, 03/07/2002
  • RE: [SCTP-Discussion] sctptest not working with IPv6 addresses, Parmar, Pankaj N, 03/07/2002

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