Question about Linksys RV082 10/100 8-Port VPN Router Firewall
I see that you've had several suggestions on this problem, but none has
solved the issue for you.I can see your responses, but I can't see what
others have suggested, so I'm sorry if this path has already been
It seems that the problem is that the RV082 is using the DNS records from it's WAN0 provider when it serves leases to your clients. (I'm guessing that the AT&T DSL line is primary, and Comcast is secondary, but it doesn't really matter which is which) If I'm right, then the RV082 will pick AT&T's DNS servers, and tell the connected computers to use those IP addresses for DNS lookups.
When the AT&T link goes down, the RV082 fails over to the Comcast link, but the client computers are still trying to hit AT&T's DNS servers.
AT&T of course doesn't want to serve comcast customers, so those packets are dropped on the floor by AT&T's routers.
After the failover, the RV082 will update it's own DNS to use the secondary WAN provider's DNS servers, which is why a DHCP renew will generally solve the problem for you.
If I'm right, then the real solution will be to use an ISP-neutral DNS service, so the client can connect to the DNS servers regardless of which ISP is currently in use.
Try configuring the RV082 to use static DNS server addresses: 184.108.40.206 and 220.127.116.11, rather than getting them from your ISP. Those are Google's public DNS servers, and you can read about them here.
I hope this helps, but if I'm just re-suggesting a previous suggestion, I'm confident you know how to re-open the question. :)
Best of luck
Posted on Feb 12, 2010
Hi - I've been reading (well one side of the troubleshooting effort) and one item I'm not sure was covered is with your ISP's - Have you verified that your on static IP service with both providers. While their primary and secondary DNS servers address should not change - part of your problem could be when they refresh their IP address.
Another comment to the problem is why is your router having to fail over this frequently? I understand the frustration on this issue - in addition to getting a solid resolution - you really also need to look to the root cause of why the WAN has to keep flipping over from one ISP to the other.
And one comment made was true that a netowrk of your size should be operating with a Active Direcltry DHCP and DNS Server. I understand the expense concerns but this could be run on a robust tower machine with at least 4 gig or ram. Sorry this is not a solution - as from the one side I was reading aounds like Javaman was providing acurate troubleshooting
Posted on Feb 13, 2010
I would suggest you set up a local DNS server. An excellent choice might be to install a Windows Server 2003 machine & configure it as a DNS server.
You will then configure DNS on that server so that it forwards requests for domain name resolution to the DNS servers at both ISPs. You will then configure the DHCP server on the RV082 to distribute the IP address of this local DNS server as the preferred DNS server for the rest of the devices on your network.
This will ensure that DNS is not impacted when the failover occurs.
Posted on Feb 10, 2010
also change the router mac address off of clone pc to a random one and that should help out too.
Posted on Feb 10, 2010
Can you explain your setup in more detail? If you are failing over to a different ISP , i.e. cable from T-1, then your DNS will indeed have to change. Where is your DHCP and DNS info coming from? A server, or the router? If it is from the router, when it kicks over to the failover, if you refresh your IP/DNS info does it give you the DNS from the secondary ISP? If you are using a server to handle DHCP/DNS, what OS is it?
Posted on Feb 08, 2010
Did you try re-configuring the router with settings recommended in the config manual. Just in case you don't have it you can download it from the link below
Let me know if it worked.
Posted on Feb 05, 2010
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Posted on Jan 02, 2017
Tips for a great answer:
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Checking the Router's LEDs
Make sure the System LED is lit.
NOTE: If the Diag LED doesn't goes off, you need to upgrade the router's firmware. For instructions, click here .
Make sure the LAN 1-8 ports is lit depending on the computers connected to the designated Ethernet port.
NOTE: If the LAN 1-8 port is not lit, make sure that the computer is powered on. You can also try connecting the PC using another working cable.
Make sure the Internet (WAN1) and DMZ/Internet (WAN2) LED is lit.
NOTE: If the Internet or DMZ/Internet LED is not lit make sure the Broadband modem is powered on and that the modem is properly connected to the Ethernet port
You can access the web-based user interface utility of the RV082 by using one of two methods:
1. Open a web browser (Internet Explorer or Netscape Navigator)
· By IP address: Type http://192.168.1.1 (192.168.1.1 is the default IP address of the RV082)
and click Go or press the [Enter] key.
· By Hostname: Type http://RV082 and click Go or press the [Enter] key.
2. When the username and password prompt appears, type admin in both the username and password fields. (admin is both the default username and default password for the RV082).
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