master browser weirdness

[Whatever NEVER!]

Hi,

I have a multihomed network with approx. 20 servers. When I run
browstat on one of the servers, I get this result for ONE server.

Status for domain dom1 on transport
\Device\NetBT_Tcpip_{0851613F-9C7F-4E16-82A2-E7645C071B08}
Browsing is active on domain.
Master browser name is: W2K001
Master browser is running build 2195
2 backup servers retrieved from master W2K001
\\W2K001
\\W2K099
There are 14 servers in domain dom1 on transport
\Device\NetBT_Tcpip_{0851613F-9C7F-4E16-82A2-E7645C071B08}
There are 1 domains in domain dom1 on transport
\Device\NetBT_Tcpip_{0851613F-9C7F-4E16-82A2-E7645C071B08}


Status for domain dom1 on transport
\Device\NetBT_Tcpip_{FA290729-FFC5-40A5-8942-ADCEEE1D3D48}
Browsing is active on domain.
Master browser name is: W2K010
Master browser is running build 1381
2 backup servers retrieved from master W2K010
\\W2K010
\\W2K077
There are 7 servers in domain dom1 on transport
\Device\NetBT_Tcpip_{FA290729-FFC5-40A5-8942-ADCEEE1D3D48}
There are 1 domains in domain dom1 on transport
\Device\NetBT_Tcpip_{FA290729-FFC5-40A5-8942-ADCEEE1D3D48}

What's happening is that every once in a while we lose all
connectivity to our servers. There are 10 web servers. None of our
users can get any of the sites. And I can't even ping the IP's. But
after like 5 to 20 minutes, everything is fine.

One server has IsDomainMaster = TRUE and MaintainServerList = Yes -
Computer Browser service is started. There are no errors in the system
event logs. While all of the other servers are set to
IsDomainMaster=FALSE and MaintainServerList = No.

Can anyone tell me if the computer browser service can cause
networking to stop working?

Also ran a sniffer and noticed a lot of browser election traffic. Can
this be eliminated?

Thanks

 

[Michael Johnston [MSFT]]

This problem has nothing to do with Netbios browsing. Something is causing a physical network connectivity problem. If you
can provide details of the exact layout and configuration of the network, we may be able to provide a better solution.

When the problems occur, do you loose connectivity to machines on the same subnet or is it just to machines off subnet?


Thank you,
Mike Johnston
Microsoft Network Support
--

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.

 

[Doug Sherman [MVP]]

Hmmm:

"Master browser name is: W2K010
Master browser is running build 1381"

Build 1381 is NT 4.0 not Win2k. Are you running WINS on this network?

Doug Sherman
MCSE Win2k/NT4.0, MCSA, MCP+I, MVP

 

[Shew]

Actually, one of the servers is actually an NT4 server. No we are running
WINS. I double checked.

 

[Shew]

Hi Michael,

Can this problem be caused by having a server that is getting duplicate name
error?

I just finished checking all of the event logs and found one server that is
getting this message. I used nbtstat but everything is fine. The only thing
that is strange is that there's a entry called Administrator - which we
don't have. I've checked the newsgroups and found that it could be caused by
having more than 1 NIC. Now the server in question does have 2 NIC's.
However, only one of them is enabled. We are using WINS.

This problem has nothing to do with Netbios browsing. Something is

causing a physical network connectivity problem. If you

can provide details of the exact layout and configuration of the network,

we may be able to provide a better solution.

When the problems occur, do you loose connectivity to machines on the same

subnet or is it just to machines off subnet?

Thank you,
Mike Johnston
Microsoft Network Support

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