UDP Broadcast not redirected in between interfaces

[MikeB]

Why with some multihoming win2k servers regular UDP packets
are redirected from one nic card to an other but not
broadcast xxx.xxx.xxx.255, while other servers does?

 

[Sergio Moreno]

Hi there,
Are you running RRAS on all these Windows servers? What routing protocols do you have installed in RRAS?
--------------------

From: "MikeB" <[email protected]>
Sender: "MikeB" <[email protected]>
Subject: UDP Broadcast not redirected in between interfaces
Date: Mon, 26 Apr 2004 08:25:31 -0700

Why with some multihoming win2k servers regular UDP packets
are redirected from one nic card to an other but not
broadcast xxx.xxx.xxx.255, while other servers does?

--
Sergio Moreno
Microsoft Windows Networking

This posting is provided "AS IS" with no warranties, and confers no rights. Use of included script samples are subject to the terms specified at
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Note: For the benefit of the community-at-large, all responses to this message are best directed to the newsgroup/thread from which they originated.

 

[Mike B]

Hi there,

thanks for your help,
I'm not using RRAS on any of them. To give more info,
I have a ethernet card that forward UDP packets to a vitual
card (whithin the same server)that manage a wireless lan
segment. In some servers, I think they have SP3 installed
the broadcast packets for the second subnet are routed to
my virtual network card then broadcast to the mobile fleet.
But on others, I think they have SP2, doesn't give me those
broadcast packets BUT I see them with netmonitor sniffing
the real ethernet card. It looks like the IP stack doesn't
forward to the vitual card the broadcast from the first
subnet to the second one.

Any Idea???

Thanks again,

Mike B.

-----Original Message-----
Hi there,
Are you running RRAS on all these Windows servers? What

routing protocols do you have installed in RRAS?

--------------------

--
Sergio Moreno
Microsoft Windows Networking

This posting is provided "AS IS" with no warranties, and

confers no rights. Use of included script samples are
subject to the terms specified at

http://www.microsoft.com/info/cpyright.htm

Note: For the benefit of the community-at-large, all

responses to this message are best directed to the
newsgroup/thread from which they originated.

 

[Sergio Moreno]

Hello,

You could still be forwarding TCP/IP in Windows 2000 even without RRAS, check the following MSKB:
HOW TO: Enable TCP/IP Forwarding in Windows 2000 WGID:197
ID: 230082
http://support.microsoft.com/?id=230082

Installing SP3 on Windows 2000 does enable IP routing on a multihomed system.
Check for third party routing software installed on the server(s) that do route broadcast traffic.
Check for tools that came with NIC adapter to see if they include some kind of routing utility.
Also, check the NIC driver configuration too for any advanced feature.
--------------------

From: "Mike B" <[email protected]>
Sender: "Mike B" <[email protected]>
Subject: RE: UDP Broadcast not redirected in between interfaces
Date: Wed, 28 Apr 2004 08:57:58 -0700

Hi there,

thanks for your help,
I'm not using RRAS on any of them. To give more info,
I have a ethernet card that forward UDP packets to a vitual
card (whithin the same server)that manage a wireless lan
segment. In some servers, I think they have SP3 installed
the broadcast packets for the second subnet are routed to
my virtual network card then broadcast to the mobile fleet.
But on others, I think they have SP2, doesn't give me those
broadcast packets BUT I see them with netmonitor sniffing
the real ethernet card. It looks like the IP stack doesn't
forward to the vitual card the broadcast from the first
subnet to the second one.

Any Idea???

Thanks again,

Mike B.
routing protocols do you have installed in RRAS?
confers no rights. Use of included script samples are
subject to the terms specified at
responses to this message are best directed to the
newsgroup/thread from which they originated.

--
Sergio Moreno
Microsoft Windows Networking

This posting is provided "AS IS" with no warranties, and confers no rights. Use of included script samples are subject to the terms specified at
http://www.microsoft.com/info/cpyright.htm

Note: For the benefit of the community-at-large, all responses to this message are best directed to the newsgroup/thread from which they originated.