Slow WAN to LAN
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Slow WAN to LAN
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Registered: 2015-01-26
2015-01-26 19:21:39
Posts: 6
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Slow WAN to LAN
2015-01-26 19:21:39
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Region : Australia
Model : TL-WR1043ND
Hardware Version : V2
Firmware Version : 3.17.38 Build 140613 Rel.55867n
ISP :
When I connect the router to my ADSL modem (Billion 7300A in RFC1483 Bridged mode) WAN to LAN speeds are noticeably slower than my old TL-WR1043ND v1.8 router
If I connect the router to the modem via a gigabit switch, WAN to LAN speeds are on par with my old router.
I've done a bit of testing with TCP (tcpdump on a linux box). What I observed was that when directly connected to the modem, a single TCP connection is limited to about 500Kbit/s. Connected via gigabit switch, the single TCP connection achieves over 3,200Kbit/s. My ADSL speed is in the high 3,000's so this is what I would expect
Uplink speed is unaffected, in both cases uplinks achieve 900+Kbit/s - my uplink speed is in the high 900's, so again, this is as expected.
Model : TL-WR1043ND
Hardware Version : V2
Firmware Version : 3.17.38 Build 140613 Rel.55867n
ISP :
When I connect the router to my ADSL modem (Billion 7300A in RFC1483 Bridged mode) WAN to LAN speeds are noticeably slower than my old TL-WR1043ND v1.8 router
If I connect the router to the modem via a gigabit switch, WAN to LAN speeds are on par with my old router.
I've done a bit of testing with TCP (tcpdump on a linux box). What I observed was that when directly connected to the modem, a single TCP connection is limited to about 500Kbit/s. Connected via gigabit switch, the single TCP connection achieves over 3,200Kbit/s. My ADSL speed is in the high 3,000's so this is what I would expect
Uplink speed is unaffected, in both cases uplinks achieve 900+Kbit/s - my uplink speed is in the high 900's, so again, this is as expected.
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Re:Slow WAN to LAN
2015-01-28 09:42:03
The new router is WR1043ND V2?
What's the firmware version? Upgrade it first.
The switch is unmanaged, right?
What's the firmware version? Upgrade it first.
The switch is unmanaged, right?
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Re:Slow WAN to LAN
2015-01-28 10:42:55
Yes, as it states at the top of my post
firmware = latest = 3.17.38 Build 140613 Rel.55867n
Unmanaged switch, correct, is that important?
firmware = latest = 3.17.38 Build 140613 Rel.55867n
Unmanaged switch, correct, is that important?
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Re:Slow WAN to LAN
2015-01-28 22:00:32
an important factor I omitted is that the modem has only 100mbit ethernet. So when the router is connected directly to the modem, the WAN port is obviously at 100mbit
Amazingly, tp-link support suggested I connect WAN to LAN-1, LAN-4 to the modem - on the face of it it looks like using the router as a switch between WAN and modem so that WAN port stays at 1 gigabit. I was reluctant to do this, as I don't really think it's ever a good idea to connect an ethernet switch to itself
But, I blindly followed the suggestion, and do you want to know what such an arrangement does???
It causes the modem to continually reboot, and malfunction even once the WAN-LAN cable is removed and even after a power cycle. The only way to resurrect it after this completely stupid suggestion was to reset.
I'm beginning to lose faith for the support person assigned to this problem, to be honest.
Amazingly, tp-link support suggested I connect WAN to LAN-1, LAN-4 to the modem - on the face of it it looks like using the router as a switch between WAN and modem so that WAN port stays at 1 gigabit. I was reluctant to do this, as I don't really think it's ever a good idea to connect an ethernet switch to itself
But, I blindly followed the suggestion, and do you want to know what such an arrangement does???
It causes the modem to continually reboot, and malfunction even once the WAN-LAN cable is removed and even after a power cycle. The only way to resurrect it after this completely stupid suggestion was to reset.
I'm beginning to lose faith for the support person assigned to this problem, to be honest.
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Re:Slow WAN to LAN
2015-01-29 22:21:41
Lodged support ticket 3 days ago, and all support has done is ask me how I tested and asked me to create a ethernet loop (derpa).
I would've thought by now they'd either confirm the issue exists in the router, or that my router is faulty
Is TP-LINK support always this slow and technically inept?
I would've thought by now they'd either confirm the issue exists in the router, or that my router is faulty
Is TP-LINK support always this slow and technically inept?
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Re:Slow WAN to LAN
2015-02-04 19:49:08
Well, seems like a "LAYER 2" incompatibility between the router and my current modem - not sure if it's a general WR1043NDv2 - Billion 7300A incompatibility, or if one of my particular units is faulty. The router was good value for money, except now I have to buy a modem
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Re:Slow WAN to LAN
2015-02-10 00:14:41
If you use a Dynamic IP address on the WAN Connection, you may try to change the MTU from 1500 to 1492 (especially if you are on a PPPoE based connection).
Eventually, you may try using a Static IP address on the WAN Connection if your ISP provider allow you to do so.
Eventually, you may try using a Static IP address on the WAN Connection if your ISP provider allow you to do so.
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Re:Slow WAN to LAN
2015-02-10 06:58:06
it's a Layer 2 incompatibilityFreePix wrote
If you use a Dynamic IP address on the WAN Connection, you may try to change the MTU from 1500 to 1492 (especially if you are on a PPPoE based connection).
Eventually, you may try using a Static IP address on the WAN Connection if your ISP provider allow you to do so.
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2015-01-26 19:21:39
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