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Thread: Internet speed slow thru router fast thru modem

  1. #1

    Internet speed slow thru router fast thru modem

    I have a Netgear router behind an RCA modem (supplied by ISP), running XP PRO. I am supposed to have 2mb throughput but only getting 256kb max. When I unplug computer from router and plug directly into modem I get my 2mb throughput. I downloaded TCPOptimizer and changed my settings but still only get 256kb when plugged into router. I know the router will slow me down some but not an 87% loss in speed. Are routers designed for a certain speed? Is something wrong with it? Are there any other settings I can change to improve it. I can't leave my computer plugged into the modem becasue it's on a network that requires others to access internet as well. BTW, I haven't checked other computers on the network to see what their throughput is but I will as soon as this is posted.

    Thanks for any assistance you can provide.

  2. #2
    Elite Member trogers's Avatar
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    Connect your comp through the router and do this test. When test is completed, click the 'Statistics' button and post the pop-up report:

    http://miranda.ctd.anl.gov:7123/

  3. #3
    Here are the results; Interesting though, because everyone is gone and only one other computer is on.

    TCP/Web100 Network Diagnostic Tool v5.3.4e
    click START to begin
    Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
    running 10s outbound test (client to server) . . . . . 250.11Kb/s
    running 10s inbound test (server to client) . . . . . . 536.34kb/s
    Your PC is connected to a Cable/DSL modem
    Information: Other network traffic is congesting the link

  4. #4
    Elite Member trogers's Avatar
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    Nope. You only posted the Summary.

    You have to click the 'Statistics' button after test is completed.

  5. #5
    Okay, let's try this one. Thanks for the tip.

    Cable modem/DSL/T1 link found.
    Link set to Full Duplex mode
    No network congestion discovered.
    Good network cable(s) found
    Normal duplex operation found.

    Web100 reports the Round trip time = 169.75 msec; the Packet size = 1460 Bytes; and
    There were 1 packets retransmitted, 146 duplicate acks received, and 43 SACK blocks received
    The connection stalled 1 times due to packet loss
    The connection was idle 0.4 seconds (4.0%) of the time
    This connection is receiver limited 9.37% of the time.
    This connection is network limited 90.59% of the time.

    Web100 reports TCP negotiated the optional Performance Settings to:
    RFC 2018 Selective Acknowledgment: ON
    RFC 896 Nagle Algorithm: ON
    RFC 3168 Explicit Congestion Notification: OFF
    RFC 1323 Time Stamping: OFF
    RFC 1323 Window Scaling: OFF
    Packet size is preserved End-to-End
    Server IP addresses are preserved End-to-End
    Information: Network Address Translation (NAT) box is modifying the Client's IP address
    Server says [206.174.63.2] but Client says [192.168.1.100]

  6. #6
    Elite Member trogers's Avatar
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    Quote Originally Posted by balloonatix View Post
    Okay, let's try this one. Thanks for the tip.

    Cable modem/DSL/T1 link found.
    Link set to Full Duplex mode
    No network congestion discovered.
    Good network cable(s) found
    Normal duplex operation found.

    Web100 reports the Round trip time = 169.75 msec; the Packet size = 1460 Bytes; and
    There were 1 packets retransmitted, 146 duplicate acks received, and 43 SACK blocks received
    The connection stalled 1 times due to packet loss
    The connection was idle 0.4 seconds (4.0%) of the time
    This connection is receiver limited 9.37% of the time.
    This connection is network limited 90.59% of the time.

    Web100 reports TCP negotiated the optional Performance Settings to:
    RFC 2018 Selective Acknowledgment: ON
    RFC 896 Nagle Algorithm: ON
    RFC 3168 Explicit Congestion Notification: OFF
    RFC 1323 Time Stamping: OFF
    RFC 1323 Window Scaling: OFF
    Packet size is preserved End-to-End
    Server IP addresses are preserved End-to-End
    Information: Network Address Translation (NAT) box is modifying the Client's IP address
    Server says [206.174.xxx.xxx] but Client says [192.168.1.100]
    Test shows packet loss and modem stalling. Round trip time is higher than normal range (90-130ms)

    Do a tracert to www.yahoo.com and post, see if you have irregular ping times in the first 3 hops.

  7. #7
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    not to jump in but I am a newb and trying to find out how to fix problems with my router/modem so would like to know what my results mean if you have the time? I see something I can do to optimize it but no idea how to perform the functions to do so.

    WEB100 Enabled Statistics:
    Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
    running 10s outbound test (client to server) . . . . . 214.91Kb/s
    running 10s inbound test (server to client) . . . . . . 617.97kb/s

    ------ Client System Details ------
    OS data: Name = Windows XP, Architecture = x86, Version = 5.1
    Java data: Vendor = Sun Microsystems Inc., Version = 1.5.0_11

    ------ Web100 Detailed Analysis ------
    Cable modem/DSL/T1 link found.
    Link set to Full Duplex mode
    No network congestion discovered.
    Good network cable(s) found
    Normal duplex operation found.

    Web100 reports the Round trip time = 601.72 msec; the Packet size = 1460 Bytes; and
    No packet loss was observed.
    This connection is receiver limited 74.74% of the time.
    Increasing the the client's receive buffer (64.0 KB) will improve performance
    This connection is network limited 25.23% of the time.

    Web100 reports TCP negotiated the optional Performance Settings to:
    RFC 2018 Selective Acknowledgment: ON
    RFC 896 Nagle Algorithm: ON
    RFC 3168 Explicit Congestion Notification: OFF
    RFC 1323 Time Stamping: OFF
    RFC 1323 Window Scaling: ON
    Packet size is preserved End-to-End
    Server IP addresses are preserved End-to-End
    Information: Network Address Translation (NAT) box is modifying the Client's IP address

  8. #8
    Elite Member trogers's Avatar
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    Quote Originally Posted by Prestieg View Post
    not to jump in but I am a newb and trying to find out how to fix problems with my router/modem so would like to know what my results mean if you have the time? I see something I can do to optimize it but no idea how to perform the functions to do so.

    WEB100 Enabled Statistics:
    Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
    running 10s outbound test (client to server) . . . . . 214.91Kb/s
    running 10s inbound test (server to client) . . . . . . 617.97kb/s

    ------ Client System Details ------
    OS data: Name = Windows XP, Architecture = x86, Version = 5.1
    Java data: Vendor = Sun Microsystems Inc., Version = 1.5.0_11

    ------ Web100 Detailed Analysis ------
    Cable modem/DSL/T1 link found.
    Link set to Full Duplex mode
    No network congestion discovered.
    Good network cable(s) found
    Normal duplex operation found.

    Web100 reports the Round trip time = 601.72 msec; the Packet size = 1460 Bytes; and
    No packet loss was observed.
    This connection is receiver limited 74.74% of the time.
    Increasing the the client's receive buffer (64.0 KB) will improve performance
    This connection is network limited 25.23% of the time.

    Web100 reports TCP negotiated the optional Performance Settings to:
    RFC 2018 Selective Acknowledgment: ON
    RFC 896 Nagle Algorithm: ON
    RFC 3168 Explicit Congestion Notification: OFF
    RFC 1323 Time Stamping: OFF
    RFC 1323 Window Scaling: ON
    Packet size is preserved End-to-End
    Server IP addresses are preserved End-to-End
    Information: Network Address Translation (NAT) box is modifying the Client's IP address
    Post a new thread with the following info:

    Which country are you in?

    What speed did you pay your ISP to give you?

    Post a TCP Analyzer report.

  9. #9
    You said: Test shows packet loss and modem stalling. Round trip time is higher than normal range (90-130ms)

    Do a tracert to www.yahoo.com and post, see if you have irregular ping times in the first 3 hops.

    I did it thru start>run but the box disappears when finished, I am not fast enough with the print screen button to get all of line 13 and when I try to insert the image here, it asks for the url. SO, I feel a little handicapped right now.

  10. #10
    Elite Member trogers's Avatar
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    Quote Originally Posted by balloonatix View Post
    You said: Test shows packet loss and modem stalling. Round trip time is higher than normal range (90-130ms)

    Do a tracert to www.yahoo.com and post, see if you have irregular ping times in the first 3 hops.

    I did it thru start>run but the box disappears when finished, I am not fast enough with the print screen button to get all of line 13 and when I try to insert the image here, it asks for the url. SO, I feel a little handicapped right now.
    Do the tracert again and when it finishes displaying hop 5, press CTRL C to stop the tracert and post.

  11. #11
    When I press CTRL C the screen disappears just like it does when it finishes and nothing is copied to paste.

  12. #12
    Elite Member trogers's Avatar
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    What is the model of your RCA modem?

  13. #13
    I pressed the pause/break button and it stopped. I pressed CTRL C and the screen disappears. I can paste it as an image but can't get the text to paste here and can't figure out how to paste an image here.

  14. #14
    The RCA modem is a DCM425

  15. #15
    Elite Member trogers's Avatar
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    Quote Originally Posted by balloonatix View Post
    I pressed the pause/break button and it stopped. I pressed CTRL C and the screen disappears. I can paste it as an image but can't get the text to paste here and can't figure out how to paste an image here.
    You can open an account at this site and store your image and post the link to it:

    http://my.imageshack.us/registration/

  16. #16
    Problem is partilly solved. My service provider suggested I back up my router settings and reset it to factory defaults. WALA i get my 2mbs speed. Now my only concern is whether or not I have sacrificed security. Is there a site I can test my security?

  17. #17
    Elite Member trogers's Avatar
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    Free Online Scans - Lots of sites:

    http://forums.speedguide.net/showthread.php?t=218801

  18. #18
    System security test passed and I have my speed back. This is one I won't forget. If all else fails reset the router to factory settings. Thanks so much for all your help.

  19. #19
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    WEB100 Enabled Statistics:
    Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
    checking for firewalls . . . . . . . . . . . . . . . . . . . Done
    running 10s outbound test (client-to-server [C2S]) . . . . . 3.50Mb/s
    running 10s inbound test (server-to-client [S2C]) . . . . . . 24.35Mb/s

    ------ Client System Details ------
    OS data: Name = Windows 7, Architecture = x86, Version = 6.1
    Java data: Vendor = Sun Microsystems Inc., Version = 1.6.0_17

    ------ Web100 Detailed Analysis ------
    10 Mbps Ethernet link found.
    Link set to Full Duplex mode
    No network congestion discovered.
    Good network cable(s) found
    Normal duplex operation found.

    Web100 reports the Round trip time = 80.51 msec; the Packet size = 1460 Bytes; and
    No packet loss was observed.
    S2C throughput test: Packet queuing detected: 24.80%
    This connection is receiver limited 41.22% of the time.
    This connection is sender limited 51.7% of the time.
    This connection is network limited 7.08% of the time.

    Web100 reports TCP negotiated the optional Performance Settings to:
    RFC 2018 Selective Acknowledgment: ON
    RFC 896 Nagle Algorithm: ON
    RFC 3168 Explicit Congestion Notification: OFF
    RFC 1323 Time Stamping: OFF
    RFC 1323 Window Scaling: ON

    Server 'miranda.ctd.anl.gov' is probably behind a firewall. [Connection to the ephemeral port failed]
    Client is probably behind a firewall. [Connection to the ephemeral port failed]
    Packet size is preserved End-to-End
    Server IP addresses are preserved End-to-End
    Client IP addresses are preserved End-to-End

    have a netgear wnr834bv2, modem is a motorola surboard sb6120
    speed test shows that download is at 1.83mb upload of 3.96 and a ping of 71 i am paying for 20mb
    any ideas?

  20. #20
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    WEB100 Enabled Statistics:
    Checking for Middleboxes . . . . . . . . . . . . . . . . . . Done
    checking for firewalls . . . . . . . . . . . . . . . . . . . Done
    running 10s outbound test (client-to-server [C2S]) . . . . . 3.71Mb/s
    running 10s inbound test (server-to-client [S2C]) . . . . . . 15.96Mb/s

    ------ Client System Details ------
    OS data: Name = Windows 7, Architecture = x86, Version = 6.1
    Java data: Vendor = Sun Microsystems Inc., Version = 1.6.0_17

    ------ Web100 Detailed Analysis ------
    10 Mbps Ethernet link found.
    Link set to Full Duplex mode
    No network congestion discovered.
    Good network cable(s) found
    Normal duplex operation found.

    Web100 reports the Round trip time = 85.46 msec; the Packet size = 1460 Bytes; and
    There were 218 packets retransmitted, 437 duplicate acks received, and 654 SACK blocks received
    The connection was idle 0 seconds (0%) of the time
    S2C throughput test: Packet queuing detected: 36.30%
    This connection is receiver limited 15.6% of the time.
    This connection is sender limited 45.33% of the time.
    This connection is network limited 39.06% of the time.

    Web100 reports TCP negotiated the optional Performance Settings to:
    RFC 2018 Selective Acknowledgment: ON
    RFC 896 Nagle Algorithm: ON
    RFC 3168 Explicit Congestion Notification: OFF
    RFC 1323 Time Stamping: OFF
    RFC 1323 Window Scaling: ON

    Client is probably behind a firewall. [Connection to the ephemeral port failed]
    Packet size is preserved End-to-End
    Server IP addresses are preserved End-to-End
    Information: Network Address Translation (NAT) box is modifying the Client's IP address
    Server says [71.197.172.162] but Client says [192.168.1.2] and this is with my router

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