Small Business Server 2008
Hi all,
We have a Small Business Server 2008 which is running into a huge issue.
Two times now we have run into a situation where all users are having DNS failures causing the internet to not work.
After some investigation we found the server had managed to change its IP from 192.168.1.254 to 192.168.1.2
This has happened twice now.
Has anyone ever had this happen to them?
Its causing major down time.
Do you think it will be worth replicating the DNS on another one of our servers then pointing DHCP to that - although does this require the server being promoted to a Domain Controller?
Regards
James
We have a Small Business Server 2008 which is running into a huge issue.
Two times now we have run into a situation where all users are having DNS failures causing the internet to not work.
After some investigation we found the server had managed to change its IP from 192.168.1.254 to 192.168.1.2
This has happened twice now.
Has anyone ever had this happen to them?
Its causing major down time.
Do you think it will be worth replicating the DNS on another one of our servers then pointing DHCP to that - although does this require the server being promoted to a Domain Controller?
Regards
James
Hi James,
Presuming you only have the once NIC enabled on the server?
Anything in the event logs?
Presuming you only have the once NIC enabled on the server?
Anything in the event logs?
I suspect you have a DHCP server somewhere on your network. Put a static IP on this server (192.168.1.254). Also run "arp -a" at command prompt see the contents of the local ARP cache table. You could see what "devices" where in "touch".
Another thought,
Do you know if the server was ever configured via the SBS Wizards?
Run the Fix My Network Wizard from the SBS Console to check the network configuration.
SBS Console> 'Network' Tab> 'Connectivity' sub tab> 'Fix My Network wizard' on the right hand side
Do you know if the server was ever configured via the SBS Wizards?
Run the Fix My Network Wizard from the SBS Console to check the network configuration.
SBS Console> 'Network' Tab> 'Connectivity' sub tab> 'Fix My Network wizard' on the right hand side
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Hi James,
Its nice to get some feedback good luck with finding the culprit.
Patrick
Its nice to get some feedback good luck with finding the culprit.
Patrick
ASKER
Fix was unrelated.
DNS should be configured with a static IP address and static ipaddress doesn't change just like that.
- It might because of policy that gets enforced.
- Or conflict with an other process/device
- TCP/IP configuration not set properly
by the way... when did you notice this issue for the first time and what was the exact time between the first and the second time...
When was the last time system has been rebooted.
Would it be possible that there is a second DHCP server is installed on your network or an other device that provide automaticly DHCP.