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Case Study - Even ID 8003 - The master browser has received a server announcement from the computer <computer name> that believes that it is the master browser for the domain on transport <Card #>.

 Situation: The client has a master browser recently. The DC keeps receive Even ID 8003 - The master browser has received a server announcement from the computer <computer name> that believes that it is the master browser for the domain on transport <Card #>.

Troubleshooting: The computer that announces itself as Master Browser is changed randomly. But all of them are local in one office. After used ipconfig /all command on all problem computers, we found all these computers used different DHCP. Here are the comparison of ipconfig results on regular computers and problem computers.

The regular computer ipconfig:

IP Address. . . . . . . . . . . . : 10.0.0.25

Subnet Mask . . . . . . . . . . . : 255.255.0.0

Default Gateway . . . . . . . . . : 10.0.0.2

DHCP Server . . . . . . . . . . . . : 10.0.0.9

The problem computer ipconfig:

IP Address. . . . . . . . . . . . : 10.0.0.125

Subnet Mask . . . . . . . . . . . : 255.255.255.0

Default Gateway . . . . . . . . . : 10.0.0.121

DHCP Server . . . . . . . . . . . . : 10.0.0.121

Using arp command (see below), we found that the MAC address is 00-11-24-6a-f3-f1. From the MAC address, we believed there is a Apple device was setup as a DHCP in the same subnet.

arp -a 10.0.0.121

Interface: 10.0.0.125--- 0x2

  Internet Address      Physical Address      Type

  10.0.0.121          00-11-24-6a-f3-f1     dynamic

The client told us they just added a Apple Airport wireless router to the LAN. After we disabled DHCP on the Airport router, they don't receive 8003 Event ID any more.

Related Topics

VPN Issues
RRAS/VPN Q & A
VPN Process
Network Issues
VPN Error Codes
System Error Codes
Windows Event ID

Internal Errors

Case Study - The system has detected a conflict for IP address

 

 

 

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