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Issue when rebooting DC/DNS Servers with Managed Swith

I am having issues everytime i reboot one of my DC or DNS servers i need to reboot my managed switch, otherwise users cannot access the servers. Does anyone know where i should begin to look to resolve this?

DC/DNS Servers Windows Server Standard 2008
Managed Switch Netgear GSM7352S v2

I have UDP Relay turned on for DHCP because my windows servers handle dhcp requests rather than the switch
I also have both dns servers in the dns settings.

In order for the clients to work (on vlans) i needed to create static routes in my firewall Sonicwall NSA4500

every server becomes unavailable when i reboot one of the dcs/dns servers and then i reboot the switch and it is fine.

i ran a dcdiag and everything is in order first thing i thought was ad wasnt replicating correctly, but right now i am at a loss.
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mnevoso
Asked:
mnevoso
1 Solution
 
mmusurlianCommented:
what does your switch show for the MAC address of the server - what does the ARP table in the switch show... what other services are running on the switch?

Can you ping the Ip of the switch from the server affected servers?
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jshoffCommented:
Can you isolate things by trying a different switch?

How are the VLANs configured?

How many DHCP servers are setup?  one or multiple?

I need more details on the configuration to be able to help more.
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jrhelgesonCommented:
What is the switch manufacturer and software version?
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KaffiendCommented:
If to resolve the problem one has to reboot the switch after the servers are re-booted, it might have something to do with auto-negotiation.  Try this: set the speed of the relevant ports on the switch manually (ie, not "auto")

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mnevosoAuthor Commented:
I will get a list of how the vlans are currently setup, and kaffiend i will give that a shot.
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jrhelgesonCommented:
Is this a Cisco switch?  If so I'd need the "Show Ver" information.  There is a specific bug I am looking for.
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mnevosoAuthor Commented:
no it s a netgear switch
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jrhelgesonCommented:
Every time I have seen something like this, it has been switch related.
I what is the model # of the switch and the software version running on it?

The specific bug on the Cisco I was referring to was if you had a catalyst switch with CPUtype of 0x300

I remember dealing with this very issue on a Netgear Swtich - Model GS724T (v2, i beileve), we upgraded the firmware and from what I recall, that seemed to have made a difference, but it still appeared to be flaky.  The customer had a brand new Netgear GS748T waiting to replace the 24 port, so we just swapped it out and put the 24port in use in a different area that did not require any vlan configurations.
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mnevosoAuthor Commented:
I am in the middle of making the changes of auto negotation to manual i will let everyone know if this works.  THe vlan config is pretty basic. UNless there is something i need to look at specifically
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jrhelgesonCommented:
Try updating the firmware of the switch.  Otherwise, I'm pretty sure the switch is bad.
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