Being highly dependant on the fourth utility, the Internet, we have services from two different ISPs in our home office. One is slow but to date reliable. The second far faster for established connections but prone to issues. Our systems are patched into one of the two separate networks, but a policy based router may be added soon.
I’m also a photographer. Pushing large volumes of images up to my server for clients takes far less time with the second ISP, picked due to its much faster upload speeds. I suspect they have a device buffering and shaping traffic as although speed test tools confirm the bandwidth is as advertised the 3-way TCP handshake and any DNS resolution takes far longer than on the slower ISP’s service. An ideal way to protect uplinks from those running bit-torrent services.
Now my reason for posting. The second ISP’s Hub has developed a fault. It can route traffic to the Internet just fine and do it’s own DNS resolution when running traceroute through it’s admin page, but not perform any DNS for clients. Despite countless reboots and a factory reset it wouldn’t change. Wireshark shows clients sending request packets and not getting a single reply. It looks very much like the firmware problem that impacted many 2WIRE ASDL hubs in the past, and issue that also resulted in many calls to help desks and multiple replacements being shipped, also with the same broken firmware despite telling the help desk staff that shipping them was futile.
I’m reading in the technical press that my 2nd ISP is having clients leave them in large numbers. From my recent experiences I think I know why and wonder how much longer they’ll survive.