I'm having a terrible time when attempting to browse internet via my new Vigor 2925n, wondered if anybody had any thoughts or ideas?
When attempting to load a webpage it takes a very long time (10s) to connect to the webserver. Looking at a breakdown (using firefox or chrome dev tools), the 1st step – DNS resolution – and 3rd, 4th and 5th steps – Sending, Waiting and Receiving – all complete in 10s or low-100s of milliseconds. The second step – Connecting – takes high-1000s or sometimes 10,000s. This isn't everytime, from a non-scientific test it would be somewhere between 1 in 5, or 1 in 10 attempts, although as most web-pages are made up of content from multiple servers, the majority are slow to load completely. I can't decide if errors are evenly distributed, or cyclical, it seems to have periods when all OK, but I think the connections are kept-alive by the browser, so that's a bit unscientific. It's very frustrating.
Anyone got any thoughts at all on how I could better diagnose or what to try? Could my router be faulty? Have I missed a setting?
I think it is the Draytek, as I'd like to think I've ruled everything else out...but as it is intermittent my ruling in/out is unscientific. Any comments on the below welcome:
- Same symptoms with different browsers on Macbook, Ubuntu Laptop, Windows machine and various Phones/Tablets. Seems to be worse on Macbook than Ubuntu, but I think that is just perceived.
- Cable connection had same issue as wireless connection. Seemed less-frequent with cable, but again could just be perceived. Have ruled out wireless signal strength, same when right next to it.
- WAN is BT Infinity 2. An ECI Openreach Modem connected to WAN1. Connection is stable at close to 80 down/20 up. The issue does not appear when I use the BT Homehub 5 or connect the modem directly to Ubuntu laptop (PPPoE from linux, no NAT), so I don't think there is anything wrong with WAN.
- DNS resolution always seems fast usually resolves on first attempt. Using BT ones, but have tried alternatives (8.8.8.8 ), seems to make no difference.
- Have tried unplugging wired devices (Smart TV, Sonos, NAS box) - no change. The Sonos and TV have the same issues connecting, but OK once streaming. Reducing WiFi connected devices makes no difference.
- I updated the firmware to 3.7.4.2 when I got the router. Haven't tried downgrading. I recently re-installed the firmware reset file, made no difference.
- I played with almost every setting, all to no avail. Having reset everything with the firmware re-install the only changes now to default are to change the Admin password, SSID and WPA2 password, and to set the PPPoE user to bthomehub@btbroadband.com.
- Wireshark suggested lots of ARP broadcasts (but probably not abnormal) and quite a few TCP resets/re-trys. I thought those might be the problem, but there's no obvious correlation between the TCP resets and the slow loads. What is a normal amount of TCP resends?
James
