Posted: Sat Apr 26, 2014 15:10 Post subject: E3000 Gigabit switch too slow
Hi all,
I'm experiencing problems with the built in Gigabit switch of my Linksys/Cisco E3000. When I run a speedtest from a PC to NAS that are both connected to my E3000 (LAN side), I can only get a little under 100Mbps throughput. When I replace the E3000 with a TP Link switch the throughput goes up about the max my NAS can handle, which is about 200Mbps.
The E3000 is connected to the internet on the WAN port. I'm running DD-WRT v24-sp2 (08/12/10) std-usb-ftp (SVN revision 14929). I don't know if it matters, but I've setup a bridge between Wifi and WAN to function as a guest network.
The question I have is if the firmware can influence the throughput on the LAN side (switch)? Or is the switch purely a hardware implementation that is defective?
Joined: 24 Feb 2009 Posts: 2026 Location: Sol System > Earth > USA > Arkansas
Posted: Sat Apr 26, 2014 16:02 Post subject:
It does matter if you are connected through the WAN port. The LAN ports transfer at maximum speed with little firmware involvement. The WAN <> LAN connection transfers using software and therefore would be slower.
You might try and check to see if you have QoS enabled. That would also definitely effect your WAN <> LAN transfer. _________________ E3000 22200M KongVPN K26
WRT600n v1.1 refirb mega 18767 BS K24 NEWD2 [not used]
WRT54G v2 16214 BS K24 [access point]
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*PLEASE* upgrade PAST v24SP1 or no support.
I'm only talking about LAN to LAN communication. The WAN port is connected (I mention this to be illustrate the situation), but the throughput problem I'm having is from LAN to LAN, so only the switch is involved.
Your NAS may not support 1 Gbps or you have a bad sort of cable (you should have minimally Cat5e for all connections). Hint: all Ethernet LEDs should be green light, not blue light. _________________ 2 times APU2 Opnsense 21.1 with Sensei
2 times RT-AC56U running DD-WRT 45493 (one as Gateway, the other as AP, both bridged with LAN cable)
3 times Asus RT-N16 shelved
E4200 V1 running freshtomato 2020.8 (bridged with LAN cable)
3 times Linksys WRT610N V2 converted to E3000 and 1 original E3000 running freshtomato 2020.8 (bridged with LAN cable)
Situation 1) gigabit switch between PC and NAS give 200Mbps (max speed of the NAS with gigabit ethernet). This is my reference of a 'good' working setup
Situation 2) replaced the switch with the E3000 (PC on LAN port and NAS on LAN port). Same cables, nothing else replaced. All lights are green so all connections are 1Gbps ethernet
Basically situation 2 should give the same results as situation 1, as the E3000 LAN ports should be configured as gigabit ethernet switch, but I see a significant difference in speed on the LAN side and I'm wondering as to why. Could this be firmware related (or settings in dd-wrt)?
DD-WRT is notorious for wonky WAN to LAN throughput, both wired and WIFI. I, therefore, would not be suprised if there was also a problem with the switching. A simple test would be to flash your E3000 to Tomato and give it a shot. Or try stock firmware.
Joined: 24 Feb 2009 Posts: 2026 Location: Sol System > Earth > USA > Arkansas
Posted: Sat Apr 26, 2014 22:21 Post subject:
Actually, the problem *is* with the E3000. You are expecting a 'full-duplex 100mb' (essentially 200mb) which your NAS supports, but I believe the E3000 does not. Since your separate switch supports that speed, then yes you get that out of the separate switch. _________________ E3000 22200M KongVPN K26
WRT600n v1.1 refirb mega 18767 BS K24 NEWD2 [not used]
WRT54G v2 16214 BS K24 [access point]
Try Dropbox for syncing files - get 2.5gb online for free by signing up.
Read! Peacock thread
*PLEASE* upgrade PAST v24SP1 or no support.
Actually, the problem *is* with the E3000. You are expecting a 'full-duplex 100mb' (essentially 200mb) which your NAS supports, but I believe the E3000 does not. Since your separate switch supports that speed, then yes you get that out of the separate switch.
I thought of that, too, but if the green LED is lit, then the connection is 1 Gbps (autonegotiated). _________________ 2 times APU2 Opnsense 21.1 with Sensei
2 times RT-AC56U running DD-WRT 45493 (one as Gateway, the other as AP, both bridged with LAN cable)
3 times Asus RT-N16 shelved
E4200 V1 running freshtomato 2020.8 (bridged with LAN cable)
3 times Linksys WRT610N V2 converted to E3000 and 1 original E3000 running freshtomato 2020.8 (bridged with LAN cable)
I've installed TomatoUSB as per wats6831 hint. This does not provide any improvement on this issue but shows that it's probably not a firmware related issue.
So I'll probably ditch the E3000 (not my first Linksys I have to throw out after a few months, but now definitely the last) and go with something more robust.
I've installed TomatoUSB as per wats6831 hint. This does not provide any improvement on this issue but shows that it's probably not a firmware related issue.
So I'll probably ditch the E3000 (not my first Linksys I have to throw out after a few months, but now definitely the last) and go with something more robust.
Thanks for the hint wats6831!
although i think it is an issue with the e3000, i have one and its very old by today's specs (but it has excellent Wifi range which is why its still in service for me). why not flash stock linksys to confirm?
Maybe give the E4200 a shot? V1 is compatible with DD-WRT/Tomato. You'd want to check and see if it's the same switch chip. It offers a few advantages, like a better antenna array.
I guess I'm still confused why a gigabit switch can't run at 20% of it's speed.
Are you using a good cat5 or cat6 cable? What would be the explanation for this? Driver for the switch?
Which TomatoUSB did you use? Try this one the reccomended build
Joined: 24 Feb 2009 Posts: 2026 Location: Sol System > Earth > USA > Arkansas
Posted: Tue Apr 29, 2014 2:08 Post subject:
wats6831 wrote:
I guess I'm still confused why a gigabit switch can't run at 20% of it's speed.
I really do not think it is the router or the switch. The original poster did not explain if the NAS had a gigabit network card in it. From the speeds listed, I would think not (of course it could also be configured incorrectly).
ericvr wrote:
gigabit switch between PC and NAS give 200Mbps (max speed of the NAS with gigabit ethernet)
I am not sure if this means the NAS has a gigabit port or if that is just what the network is supposed to run at. _________________ E3000 22200M KongVPN K26
WRT600n v1.1 refirb mega 18767 BS K24 NEWD2 [not used]
WRT54G v2 16214 BS K24 [access point]
Try Dropbox for syncing files - get 2.5gb online for free by signing up.
Read! Peacock thread
*PLEASE* upgrade PAST v24SP1 or no support.
@crashfly: I'm reading back my posts, but it is all in there.
I use the internal switch of the router, then the speed test gives me <100Mbps. I replace the router by a gigabit switch, then the speedtest gives me >200Mbps. Ofcourse the NAS that I'm using has gigabit ethernet, how else could I get the >200Mbps.
I'm using Cat5e cables. The strange thing is that with a 20 euro TP Link gigabit switch I get the speeds I'm expecting.
As Tomato also gives the same behaviour, it looks like a hardware issue or that something in the network is 'border lined' and the line drivers in the TP-link are better than the ones in the router (nice hypothesis wats6831).
I wouldn't be surprised if it's a hardware problem in the router, I guess I'd have to spend the 100+ euro's on a different router
I've been using the TP-link switch for the last two weeks and the speed is still what I expect it to be >200Mbps reading from my NAS. Unfortunately this also means I won't be able to get a throughput higher than 100Mbps from wifi due to this issue (I'm very close to my router so should be able to go over 100Mbps in wifi N). I'll probably need a new wifi AP/router for optimum performance.
I've had my share of issues with different Linksys products. I'll probably check out an ASUS router now. Once I have a new router I'll let you know if this solves the problem.
