BDIX Speed Test: How to Test Your Local Speed Correctly (2026 Guide)

You pay for a speed. Your ISP delivers two very different routes for that speed: the international route that ordinary websites use, and the local BDIX route that FTP servers, live TV and Bangladeshi sites use. A normal speed test only measures the first one. To know what your BDIX downloads will actually do, you need to test the local route - and read the result correctly. If the terms sound unfamiliar, our deep dive on what BDIX actually is explains the peering layer first. For a ready-made starting point, our internet-speed topic hub collects every ISP and BDIX speed resource on this site.

This guide shows you how to run a proper BDIX speed test, what the numbers mean, and how to fix the common causes of a slow result.

Quick Answer: Run the Test

Open the BDIX speed test tool on this site and run it. It measures throughput over the local peering route rather than a foreign test server, which is the number that matters for BDIX FTP servers and IPTV. For reachability (whether BDIX routes are open at all), use the BDIX tester - a speed test on a dead route means nothing.

Before You Test: Get a Clean Measurement

Half of the "my BDIX is slow" reports are caused by the test setup, not the connection. Do this first:

1. Get off weak Wi-Fi. Sit near the router or plug in a network cable. 2.4 GHz Wi-Fi in a busy Dhaka apartment routinely caps a 100 Mbps line at a fraction of its speed.
2. Stop everything else. Pause downloads, streaming boxes, cloud backups and other devices. A background Windows update will eat your test.
3. Use a modern browser. Old browsers and heavy extensions can throttle a test tab. Chrome, Edge or Firefox, up to date, nothing else running.
4. Test twice. Once in the morning (quiet) and once at 9–11 pm (peak). Two good runs tell you more than one.
5. Know your package speed. The test is only meaningful against what you pay for. Check your latest bill or the ISP app.

Reading the Result: Mbps vs MB/s

The single most common confusion in Bangladeshi speed reports: ISPs and speed tests quote Mbps (megabits per second), while download managers show MB/s (megabytes per second). There are 8 bits in a byte, so:

If your test says 20 Mbps and FileZilla shows 2.3 MB/s, nothing is wrong - that is the same speed in different units. If the download shows 0.4 MB/s on a 20 Mbps package, now you have a real problem to chase.

What the Numbers Should Look Like

Healthy result

• Local (BDIX) download within about 10% of your package speed.
• Ping to the test server in single digits to low double digits (ms).
• Peak-hour result within roughly 80% of your quiet-hour result.

Suspicious result

• Local speed far below package speed even on a cable, at a quiet hour → ISP provisioning or peering issue.
• Local speed fine at noon but collapses at 10 pm → shared-bandwidth congestion on your ISP.
• Wi-Fi test much slower than cable test on the same line → your Wi-Fi, not your ISP.
• Local route fast but international crawl (or the reverse) → normal routing behaviour, not a fault - each route has its own capacity.

Why Local and International Speeds Differ

Your ISP buys international bandwidth - the capacity that crosses submarine cables - and that resource is expensive and shared. The BDIX route costs the ISP far less and stays inside the country, so a well-run ISP provisions it generously. This is why the two routes can behave completely differently:

• International slow, BDIX fast: common on budget packages during international congestion or cable faults. Your BDIX downloads will still fly.
• International fast, BDIX slow: suggests a peering or local-capacity problem worth a support ticket - this is the one combination that is never "normal".
• Both capped at the same number: usually your own package, Wi-Fi, or device - test with a cable to separate them.

Fixing a Slow BDIX Result, Step by Step

1. Rule out Wi-Fi

Test with a cable. If the cable result is fine, fix the Wi-Fi instead: move to 5 GHz, reduce distance, and check how many devices share the band. In dense buildings, neighbouring routers on the same channel are a real tax on 2.4 GHz.

2. Rule out the device

Restart the test device. On phones, low-power mode can throttle transfers; on PCs, background sync (OneDrive, Google Drive) steals bandwidth. Ethernet on a laptop is the cleanest possible test bench.

3. Rule out the router

Reboot the router. If it has run for months, memory pressure and heat alone can halve throughput. While you are in the router panel, confirm the WAN link speed matches your package (a 100 Mbps WAN link on a 300 Mbps package caps everything).

4. Rule out the hour

Re-test at a quiet hour. If quiet-hour is fine, the line is healthy and you are seeing evening congestion. Congestion is an ISP problem: report it with both results attached.

5. Rule out the server

Try a different BDIX server from our directory. If one server is slow but others are full-speed, the first server is loaded or throttling per-connection - not your line. Check the server's status too.

6. Then, and only then, blame the ISP

If a cabled, quiet-hour, single-device test is still far below package speed on the local route, open a support ticket with: package speed, both test screenshots, time of day, and connection method. That is exactly the evidence a competent NOC needs.

Bonus: Test Like an FTP User

A speed test measures raw capacity. FTP downloads also depend on the server's per-connection limits. To see what you will really get:

1. Open a well-loaded server from the directory in FileZilla.
2. Download a mid-size file (a few hundred MB) and watch the transfer speed.
3. Add a second download - many servers allow multiple connections per user, so two parallel files often total more than one alone.
4. Compare the total with your speed test result. If the total approaches your package in MB/s, your BDIX experience is as good as it gets.