MS Loopback adapter Issue in Win Vista

[per...@gmail.com]

Hello All,

I am having issues getting Loopback adapter to work with Vista.
I have installed the MS Loopback adapter correctly (Control Pannel-
>Add new Harware etc)
When I enable it, this is what is happening:
1. Its not communicating with my Dynagen router ( to which I have
assosiated it to)
2. I am loosing my main internet connection.

Can someone please help me with this, if you have already run into
this issue before.
I have also attached a screen-shot of how it looks like when I enable
the Loopback adapter and just open the properties of my Main Internet
connection (Local Area Connection) adapter and just click ok (without
making any changes to it).
I have also asked questions in Hacki forum, but I cant understand what
they want me to do.
Please look into this for me,.

Thanks
Prashant

[Fahad Rahmani]

Hello,

I don't see any screen shot attached. Have you uploaded it on box?
Where you able to locate loopback in the network device list.

Kindly provide the following:
output of network device list.

Disable the loopback - internet is fine, no issues: copy and paste the below commands..
echo "netsh dump" >> c:\preipdetail.txt
netsh dump >> c:\preipdetail.txt
echo "netstat -r" >> c:\preipdetail.txt
netstat -r >> c:\preipdetail.txt
echo "netsh inter ip show config" >> c:\preipdetail.txt
netsh inter ip show config >> c:\preipdetail.txt
echo "ipconfig/all" >> c:\preipdetail.txt
ipconfig/all >> c:\preipdetail.txt
netstat -a >> c:\preipdetail.txt

Enable the loopback:
echo "netsh dump" >> c:\postdetail.txt
netsh dump >> c:\postdetail.txt
echo "netstat -r" >> c:\postdetail.txt
netstat -r >> c:\postdetail.txt
echo "netsh inter ip show config" >> c:\postdetail.txt
netsh inter ip show config >> c:\postdetail.txt
echo "ipconfig/all" >> c:\postdetail.txt
ipconfig/all >> c:\postdetail.txt
netstat -a >> c:\postdetail.txt


Regards

[K.Prashant Rao]

yes Fahad Bhai, sorry i attached it in box i guess. I have attached them again here with this mail.

Meanwhile, I uninstalled the Loopback adapter and re-installed it.

Now i am able access internet with loopback enabled, but i STILL cant ping the loopback adapter IP from the router

In the attachement, you see that warning message ?

I cant figure out why I am getting that message that I cant have two different (disjoint) networks as Default Gateway

I need to get rid of that Fahad Bhai

 

    [[ROUTER R1]]
    console = 2001
    f0/0 = NIO_gen_eth:\Device\NPF_{344B15B4-1A7F-4813-834E-16FFB44C7523}
    s1/0 = R2 s1/0

 

I gave the router fa0/0 as 192.168.1.1 /24

and in the loopback adapter TCP/IP v4 , i gave static IP as 192.168.1.50 /24 with Defualt gateway as 192.168.1.1

 

Cant figure out where the settings are going wrong.

 

 

Network Device List looks like this:

 

Network adapters on this machine:

NIO_gen_eth:\Device\NPF_{C1AA7392-75AD-48D6-B0E6-677D2C7F21F7}
 Name      : Local Area Connection* 12
 Desciption: MS Tunnel Interface Driver

 

NIO_gen_eth:\Device\NPF_{344B15B4-1A7F-4813-834E-16FFB44C7523}
 Name      : MS LOOPBACK
 Desciption: MS LoopBack Driver

 

NIO_gen_eth:\Device\NPF_{DCC1478D-23D2-4237-8C13-8A4C3308D55E}
 Name      : Local Area Connection
 Desciption: Realtek RTL8168C"

 

NIO_gen_eth:\Device\NPF_{66566544-AA06-43D8-8BF0-34AF58D3127B}
 Name      : Wireless Network Connection
 Desciption: Microsoft

 

Use as follows:
  F0/0 = NIO_gen_eth:\Device\NPF_{...}

Press any key to continue . . .

 

 

 

And i copy pasted the below commands per your advice.

I hope they are to be copy-pasted in the command prompt....is that right Fahad bhai ?

[Fahad Rahmani]

Hello,

That is expected, think from PC's perspective... what are you saying to PC ?
You are saying this:
To go to anywhere, send to 219.64.194.1
To go to anywhere, send to 192.168.1.1

I mean both are DG's, kind of default route. so what do you expect your pc to do ? To go to hotmail, "best case scenario", send one packet to this dg and the other one to this dg. Or may be per session..

so this is the solution...
Do not touch 219.64.194.1 that is just fine..
on loopback: do not define DG, and it will work fine.. if you have any issue still, do let me know and we will do static routing on PC as mentioned below but after some assessment and checking your routes on the PC.

##############
on 192.168.x.x "loopback", do not mention any gateway.. and do the static routing..
route add <network_number_for_dynamips_network> mask <mask> <router_ip_address> metric 1
##############

[K.Prashant Rao]

Fahad Bhai, it worked now, Thank you :-)

I took this laptop with Big time h/w config only for my ccie prep so that i could run around 10 routers at the same time on dynagen. 

But I was disappointed when it refused to even recognize the loopback adapter.

I got it now, like you told me today, Vista just tries to act smart ..lol

Got it going now

Thanks a lot

[Fahad Rahmani]

Hello,
Good to hear that it works...

I would suggest installing Linux, but you are server person, you know better... :)

Last word: It is the journey towards CCIE which matters, not the CCIE certificate "after achieving :)". So tread with pleasure, love technology and appreciate excellence... and share your knowledge.

Regards.