Modem/Router connected to switch then Router as a switch.

Toggle sidebar Toggle sidebar
X

xs7v3n

Distinguished
Mar 27, 2011
24
0
18,510
Hi guys, it's been a while since I posted here. Glad to be here again!

Ok well I have Midcontinent 2.0 with 100MBps of donwload speed, using CISCO DPC3825 modem/router. I have an ethernet cable connceted to some kind of switch that routes it around the house on each panel for direct ethernet connections. I have it connected to my room upstairs so I can use my router (but I don't remember model # of this Netgear dsl/router) as a switch. So this is how the connection works: coaxial cable connected to model/router, ethernet cable connected to modem/router to some kind of switch that is routed to my room's plug in panel (female ethernet input), ethernet cable connected to the panel and router as an ethernet switch for my room.

Here's my problem, If i have my computer connected directly to that panel, I am getting 100MBps of speed but if I have connected to the router to port 1 and my computer connected to port 2, I am getting 75MBps.
 
Solution
kanewolf
Your DSL router contains a 100Mbit switch. To get 100Mbit THROUGHPUT you need a gigabit switch because of the overhead associated with ethernet. 75Mbit is more degradation than I would have expected, but still fully explained by a 100Mbit switch.
Sort by date Sort by votes
kanewolf

kanewolf

Titan
Moderator
May 29, 2013
37,313
3,275
156,790
Your DSL router contains a 100Mbit switch. To get 100Mbit THROUGHPUT you need a gigabit switch because of the overhead associated with ethernet. 75Mbit is more degradation than I would have expected, but still fully explained by a 100Mbit switch.
 
Upvote 0 Downvote
Solution
B

bill001g

Titan
Aug 9, 2012
28,318
2,753
125,640
It depends how old the router is. Generally the lan ports are connected to a small switch chip inside the router. Most the newer devices can run all the ports at 100m up and 100m down on all the ports at the same time. So a 4 port switch would be able to run 800m of total traffic. The gig ports generally do the same so you seldom see a bottle neck going lan-lan of any kind. Years ago there was big price difference between these high speed switching chips and ones that could only run slower so they did not use them as much.

Still 75m is kinda slow. If you really want to test it you could plug a pc into port 1 and a different pc into port 2 and run a program like IPERF to test between the devices.

You can get a 4 port gig switch for $20 so that would be you best bet. You can get 10/100 for just a little less but unless the $5 or so difference in price is significant to you I would buy the 10/100/1000 model even if you do not have gig ports.
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom