Hi Gurus,
Searching through Google I come to knew “NTDEV & NTFSD Archive” and
also many messages for IMSAMP Driver in NT. Me too has just started working
with this sample driver provided from microsoft. I’m facing some problem
with this driver…
See just to revise you the functionality of this driver, i’m starting
here with my setup before the problem defination…
I’ve 2 network cards installed on my NT-Workstation 4.0. Now when I
install IMSAMP protocal it creates 2 “Intermidiate Sample Miniport Driver
Virtual Adapter” and the TCP/IP is bound to both of the adapter. I’ve
assigned 192.168.1.1/24 to one and 172.16.0.1/24 to another IMSAMP Adapter.
IPs to the “fast ethernet” are simply 10.111.111.111/24 and
10.222.222.222/24. Now I wanted to use IP’s of IMSAMP for “routing” purpose,
with the following simple network…
192.168.1.2 192.168.1.1 172.16.0.1 172.16.0.2
±-----+ ±--------------+ ±--------+
|Win95 | ---------- | NT WKS 4.0 |------------| Linux |
±-----+ ±--------------+ ±--------+
(ImSampMP1) (ImSampMP2)
Everything work fine as far as the communication b/w win95 and Linux
box is concern… i.e. I’m able to use this network. But the problem noticed
when I dumped the IP packet at Linux box with the help of universal
“tcpdump”. I surprise to knew that every packet was getting duplicated in
this routing setup. I simply wanted to conferm this duplicacy so i used
ping from Linux to Win95. I shocked to see the result
… … …
One reply and 3 dup!!!
Does anyone having idea about this Bug in IMSAMP??? Can i have this
bug fixed?
Thanks in advance.
– Sumit Pandya
xxxxx@elitecore.com
xxxxx@yahoo.com
ICQ# 52147513
P.S: if anyone want source code then please download the version i’m using.
http://www.icenet.net.in/sumit/IMSamp.exe . There is no custom
modifications.
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Look at the bindings for TCP/IP in the Network Control Panel. Do you have
TCP/IP bound to both the real adapter and the virtual adapter? If so, adjust
the binding so it just binds to the IM virtual adapter.
Regards,
Thomas F. Divine
PCAUSA - Toolkits & Resources For Network Software Developers
NDIS Protocol - NDIS Intermediate - TDI Client
http: - http:
----- Original Message -----
From: “Sumit Pandya”
To: “NT Developers Interest List”
Sent: Thursday, June 28, 2001 5:49 AM
Subject: [ntdev] IMSAP Duplicates the Packets
>
> Hi Gurus,
>
> Searching through Google I come to knew “NTDEV & NTFSD Archive” and
> also many messages for IMSAMP Driver in NT. Me too has just started
working
> with this sample driver provided from microsoft. I’m facing some problem
> with this driver…
> See just to revise you the functionality of this driver, i’m starting
> here with my setup before the problem defination…
> I’ve 2 network cards installed on my NT-Workstation 4.0. Now when I
> install IMSAMP protocal it creates 2 “Intermidiate Sample Miniport Driver
> Virtual Adapter” and the TCP/IP is bound to both of the adapter. I’ve
> assigned 192.168.1.1/24 to one and 172.16.0.1/24 to another IMSAMP
Adapter.
> IPs to the “fast ethernet” are simply 10.111.111.111/24 and
> 10.222.222.222/24. Now I wanted to use IP’s of IMSAMP for “routing”
purpose,
> with the following simple network…
>
>
> 192.168.1.2 192.168.1.1 172.16.0.1 172.16.0.2
> ±-----+ ±--------------+ ±--------+
> |Win95 | ---------- | NT WKS 4.0 |------------| Linux |
> ±-----+ ±--------------+ ±--------+
> (ImSampMP1) (ImSampMP2)
>
>
> Everything work fine as far as the communication b/w win95 and
Linux
> box is concern… i.e. I’m able to use this network. But the problem
noticed
> when I dumped the IP packet at Linux box with the help of universal
> “tcpdump”. I surprise to knew that every packet was getting duplicated in
> this routing setup. I simply wanted to conferm this duplicacy so i used
> ping from Linux to Win95. I shocked to see the result
> … … …
> One reply and 3 dup!!!
>
> Does anyone having idea about this Bug in IMSAMP??? Can i have
this
> bug fixed?
>
> Thanks in advance.
>
> – Sumit Pandya
> xxxxx@elitecore.com
> xxxxx@yahoo.com
> ICQ# 52147513
>
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