Assuming "dhcp snooping trust" has been set on the links connecting to the DHCP server, check as well IOS release notes. I stumbled over a DHCP snooping bug affecting the 6500 series when using VRF light.Check as well logs and do a debugging on the s...

It gets a bit more complex for inbound traffic and/or if you want redundancy for your DMZ, if you have one. If it's outbound traffic, as said, use source-routing and NAT according to the ISP link you choose. Just out of curiosity: Why this setup with...

Thanks, Chris.Just to get you right: You are running a DNS server already and have the domain you hold delegated to it?Usually at least two DNS servers are required, so you either have two on your site or you specified one at your ISP or any other lo...

I don't fully understand the problem nor the proposed solution to it. If you can explain in more detail what the goal is, I could better respond.If it's just about the mentioned "webmail" A record, changing it after you changed the IP on that system ...

As far as I understand, both ISPs assign you their address space. So you can use two links, but each of them has to use an IP address assigned of the respective subnet. IP addressed assigned by ISP A will always route to him and cannot reach active c...