Multihomed PC

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Rick

W3K DNS,AD,XP

I have WS A with LAN and Wireless connection to different subnets. LAN
is primary connection. I ping WS A from from WS B and it resolves to
primary LAN IP, if the LAN connection goes down , I flush my DNS on WS
A and ping WS B and it now picks up the Wireless IP. What in DNS tells
my workstation that the Wireless IP is up and not the LAN? Because WS
A has 2 NIC's, when I do a ping, does it do a round robin for which IP
is up and running?

thanks
Rick
 
In
Rick said:
W3K DNS,AD,XP

I have WS A with LAN and Wireless connection to different subnets. LAN
is primary connection. I ping WS A from from WS B and it resolves to
primary LAN IP, if the LAN connection goes down , I flush my DNS on WS
A and ping WS B and it now picks up the Wireless IP. What in DNS tells
my workstation that the Wireless IP is up and not the LAN? Because WS
A has 2 NIC's, when I do a ping, does it do a round robin for which IP
is up and running?

thanks
Rick
Click to expand...

Yep, it performs a Round Robin. More reason to never multihome a DC. It
recks havoc with DNS registration and causes inconsistent results and other
numerous issues. You've only experienced some of them. If you need to
multihome a DC, you must pick the primary NIC and disable NetBIOS, DNS reg,
GcIpAddress, and the LdapIpAddress on the NIC. How? There are numerous steps
involved including multiple registry changes to alter a DC functionality. If
I were you, I would simply team the NICs and get a cheapo or more expensive
router if you are offering NAT. If simply trying to offer services on two
subnets, allow the infrastructure routers to route traffic.

If you would like to see the steps and what's involved in detail, I can post
them.

--
Regards,
Ace

This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.

Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT,
MVP Microsoft MVP - Directory Services
Microsoft Certified Trainer

Infinite Diversities in Infinite Combinations

Having difficulty reading or finding responses to your post?
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"Life isn't like a box of chocolates or a bowl of cherries or
peaches... Life is more like a jar of jalapenos. What you do today
may burn your butt tomorrow." - Garfield
 
In



Yep, it performs a Round Robin. More reason to never multihome a DC. It
recks havoc with DNS registration and causes inconsistent results and other
numerous issues. You've only experienced some of them. If you need to
multihome a DC, you must pick the primary NIC and disable NetBIOS, DNS reg,
GcIpAddress, and the LdapIpAddress on the NIC. How? There are numerous steps
involved including multiple registry changes to alter a DC functionality. If
I were you, I would simply team the NICs and get a cheapo or more expensive
router if you are offering NAT. If simply trying to offer services on two
subnets, allow the infrastructure routers to route traffic.

If you would like to see the steps and what's involved in detail, I can post
them.

--
Regards,
Ace

This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.

Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT,
MVP Microsoft MVP - Directory Services
Microsoft Certified Trainer

Infinite Diversities in Infinite Combinations

Having difficulty reading or finding responses to your post?
Try using Outlook Express or any other newsreader, configure a news
account, and point it to news.microsoft.com. Anonymous access. It's
easy and it's free:

How to Configure OEx for Internet Newshttp://support.microsoft.com/?id=171164

"Life isn't like a box of chocolates or a bowl of cherries or
peaches... Life is more like a jar of jalapenos. What you do today
may burn your butt tomorrow." - Garfield
Click to expand...

Ace,
it's actually the Workstations that have dual NIC's in them. What
seems to be happening now is when the Workstation boots up, since the
wireless NIC registers last , all traffic is passed through it. I need
to find a way for the workstation to bootup and register the LAN NIC
last, any ideas?

Rick
 
Read inline please.

In
Rick said:
Ace,
it's actually the Workstations that have dual NIC's in them. What
seems to be happening now is when the Workstation boots up, since the
wireless NIC registers last , all traffic is passed through it. I need
to find a way for the workstation to bootup and register the LAN NIC
last, any ideas?
Click to expand...

In TCP/IP properties on the Wireless NIC clear the checkbox on the DNS tab
for Register this connections addresses in DNS.
Then the Wireless NIC won't register at all.



--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps

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Read inline please.

In

In TCP/IP properties on the Wireless NIC clear the checkbox on the DNS tab
for Register this connections addresses in DNS.
Then the Wireless NIC won't register at all.

--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps

===================================
When responding to posts, please "Reply to Group"
via your newsreader so that others may learn and
benefit from your issue, to respond directly to
me remove the nospam. from my email address.
===================================http://www.lonestaramerica.com/http://support.wftx.us/http://message.wftx.us/
===================================
Use Outlook Express?... Get OE_Quotefix:
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===================================
Click to expand...

Jeez, that was simple......

thanks for all the help

Rick
 
In
Rick said:
Ace,
it's actually the Workstations that have dual NIC's in them. What
seems to be happening now is when the Workstation boots up, since the
wireless NIC registers last , all traffic is passed through it. I need
to find a way for the workstation to bootup and register the LAN NIC
last, any ideas?

Rick
Click to expand...

Sorry, I misread it thinking it's your DC. Glad Kevin helped you out.

Ace
 
Read inline please.

In

In TCP/IP properties on the Wireless NIC clear the checkbox on the DNS tab
for Register this connections addresses in DNS.
Then the Wireless NIC won't register at all.

--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps

===================================
When responding to posts, please "Reply to Group"
via your newsreader so that others may learn and
benefit from your issue, to respond directly to
me remove the nospam. from my email address.
===================================http://www.lonestaramerica.com/http://support.wftx.us/http://message.wftx.us/
===================================
Use Outlook Express?... Get OE_Quotefix:
It will strip signature out and morehttp://home.in.tum.de/~jain/software/oe-quotefix/
===================================
Keep a back up of your OE settings and folders
with OEBackup:http://www.oehelp.com/OEBackup/Default.aspx
===================================
Click to expand...

Kevin,
here is a new wrinkle, we have software that uses Reverse DNS, so we
need the wireless registered in DNS. My problem remains having the LAN
connection being the primary connection when both connections are up.
any thoughts?

Rick
 
Read inline please.

In
Rick said:
Kevin,
here is a new wrinkle, we have software that uses Reverse DNS, so we
need the wireless registered in DNS. My problem remains having the LAN
connection being the primary connection when both connections are up.
any thoughts?
Click to expand...

Are both the Wired and Wireless networks on the same subnet?

If so, create a Bridge between the two NICs.


--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps

===================================
When responding to posts, please "Reply to Group"
via your newsreader so that others may learn and
benefit from your issue, to respond directly to
me remove the nospam. from my email address.
===================================
http://www.lonestaramerica.com/
http://support.wftx.us/
http://message.wftx.us/
===================================
Use Outlook Express?... Get OE_Quotefix:
It will strip signature out and more
http://home.in.tum.de/~jain/software/oe-quotefix/
===================================
Keep a back up of your OE settings and folders
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http://www.oehelp.com/OEBackup/Default.aspx
===================================
 
Read inline please.

In

Are both the Wired and Wireless networks on the same subnet?

If so, create a Bridge between the two NICs.

--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps

===================================
When responding to posts, please "Reply to Group"
via your newsreader so that others may learn and
benefit from your issue, to respond directly to
me remove the nospam. from my email address.
===================================http://www.lonestaramerica.com/http://support.wftx.us/http://message.wftx.us/
===================================
Use Outlook Express?... Get OE_Quotefix:
It will strip signature out and morehttp://home.in.tum.de/~jain/software/oe-quotefix/
===================================
Keep a back up of your OE settings and folders
with OEBackup:http://www.oehelp.com/OEBackup/Default.aspx
===================================
Click to expand...

No, the LAN and Wireless connections are on two differnt vlans, we
want to create two different paths out.

Rick
 
Read inline please.

In
Rick said:
No, the LAN and Wireless connections are on two different vlans, we
want to create two different paths out.
Click to expand...

So you mean each one has a different Default gateway?




--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps

===================================
When responding to posts, please "Reply to Group"
via your newsreader so that others may learn and
benefit from your issue, to respond directly to
me remove the nospam. from my email address.
===================================
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===================================
Use Outlook Express?... Get OE_Quotefix:
It will strip signature out and more
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===================================
Keep a back up of your OE settings and folders
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http://www.oehelp.com/OEBackup/Default.aspx
===================================
 
Read inline please.

In

So you mean each one has a different Default gateway?

--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps

===================================
When responding to posts, please "Reply to Group"
via your newsreader so that others may learn and
benefit from your issue, to respond directly to
me remove the nospam. from my email address.
===================================http://www.lonestaramerica.com/http://support.wftx.us/http://message.wftx.us/
===================================
Use Outlook Express?... Get OE_Quotefix:
It will strip signature out and morehttp://home.in.tum.de/~jain/software/oe-quotefix/
===================================
Keep a back up of your OE settings and folders
with OEBackup:http://www.oehelp.com/OEBackup/Default.aspx
===================================
Click to expand...

Correct.

Rick
 
Read inline please.

In

So you mean each one has a different Default gateway?

--
Best regards,
Kevin D. Goodknecht Sr. [MVP]
Hope This Helps

===================================
When responding to posts, please "Reply to Group"
via your newsreader so that others may learn and
benefit from your issue, to respond directly to
me remove the nospam. from my email address.
===================================http://www.lonestaramerica.com/http://support.wftx.us/http://message.wftx.us/
===================================
Use Outlook Express?... Get OE_Quotefix:
It will strip signature out and morehttp://home.in.tum.de/~jain/software/oe-quotefix/
===================================
Keep a back up of your OE settings and folders
with OEBackup:http://www.oehelp.com/OEBackup/Default.aspx
===================================
Click to expand...

Kevin,
other then setting up a bridge on my WS to use both cards or
redundancy, which due to being on 2 different subnets I can't do. what
could I do to make the LAN card the preferred network for the WS on
bootup?

Rick
 
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