ApEX Max speed on Comcast Cable

Hi, I have just gotten Comcast cable. Set up went well - got it running off my Airport Express.
The Cable speed is up to 6mb/s however I can only get max 3mb/s through the Airport. If I plug the modem directly into my powerbook I get almost 6mb/s.
I have turned off all robustness, upped the multicast rate, turned off security (just to test), switched to .g only - nothing makes much difference.
Has someone come across the same thing?
Thanks

My tests get me:
3671 kbps with the AEX (via WiFi); the AEX is connected to the network via Ethernet through two hubs, and back to the cable modem and Airport Extreme access point.
5431 kbps with the Airport Extreme (via WiFi); the AEM is connected directly to the cable modem via Ethernet.
I have not yet figured out why there is a difference since the AEX and AEM each are hard wired to the network. I also have problems with slow loading Web pages though, and I think Safari, and/or 10.4.6 also are part of the problem. That said, I've also experienced Internet bandwidth fluctuations with Comcast and our service used to be much slower (consistently below 2000 kbps when at the time, it was supposed to be 4000). Try doing speed tests at different times of day for several days and keep a log.
Remember cable modem bandwidth is shared with every Comcast customer in your neighborhood. I believe your Internet speed can vary with the number of Comcast Internet customers who are online simultaneously and possibly with the number of TV shows being viewed. I know that our Internet service stops cold whenever Comcast issues those Emergency Broadcast System "Amber" and "Weather" alerts through the TV. Make sure these issues aren't causing the slowdowns with uncontrolable coincidences during the testing...

Similar Messages

  • EzVPN issues with a Comcast cable connection

    I have a problem with a Comcast cable connection and an EzVPN. Simply put the connection drops within minutes of no activity. In other words, if I leave an RDP connection open from my datacenter to the remote site, the VPN connection will stay open all the time. A few minutes after I close the connection the VPN drops and the remote side has to wait until its keys timeout to reconnect (obviously without a reset).
    I have multiple sites connecting to the EzVPN server without issues from multiple carriers. This one Comcast connection seems to be an issue. I've verified that the configurations for other DHCP based cable connections and this one are the same (except for local parameters). I've also run PING tests to test reliability and MTU issues. For the reliability I do have 1 - 2 packets out of 200 consistently dropping with a 2 second timeout value for the PING. (This is pinging the next hop router on the connection.) For MTU I was able to PING with packet sizes all the way up to 1500 bytes with the DF bit set.
    So, I'm looking for any direction on this issue.
    Here is the configuration of the router at the remote site (truncated for clarity):
    crypto ipsec df-bit clear
    crypto ipsec client ezvpn comcast-remote1
    connect auto
    group comcast-remote1 key testing1234
    mode network-extension
    peer 65.x.x.x
    xauth userid mode interactive
    bridge irb
    interface FastEthernet0
    description Trunk to LAN network
    switchport mode trunk
    interface FastEthernet4
    description WAN connection
    ip address dhcp client-id FastEthernet4
    no ip redirects
    no ip unreachables
    no ip proxy-arp
    duplex auto
    speed auto
    crypto ipsec client ezvpn comcast-remote1
    interface Dot11Radio0
    no ip address
    bridge-group 1
    interface Vlan1
    description primary LAN connection
    no ip address
    ip tcp adjust-mss 1452
    bridge-group 1
    interface BVI1
    description Bridged connection for Dot11Radio0 and Vlan1
    ip address 10.x.x.x 255.255.255.0
    ip helper-address 192.x.x.x
    no ip redirects
    no ip unreachables
    no ip proxy-arp
    ip virtual-reassembly
    crypto ipsec client ezvpn comcast-remote1 inside
    bridge 1 protocol ieee
    bridge 1 route ip
    This remote router is a Cisco 871W running this image c870-advsecurityk9-mz.124-4.T7.bin. I've checked the other 871W routers that are on a DHCP cable connection and they are also running this image version.
    Here is the relevant sections of the hub (EzVPN server) router:
    crypto isakmp policy 20
    encr aes 256
    group 2
    crypto isakmp policy 30
    encr aes 256
    authentication pre-share
    group 2
    lifetime 28800
    crypto isakmp policy 90
    encr aes 256
    group 2
    lifetime 28800
    crypto isakmp keepalive 60 10
    crypto isakmp nat keepalive 60
    crypto isakmp client configuration group comcast-remote1
    key testing1234
    acl comcast-remote1_networks
    save-password
    crypto isakmp profile comcast-remote1_isakmpprof_dyncorp
    match identity group comcast-remote1
    isakmp authorization list comcast-remote1
    client configuration address respond
    accounting svpn_accounting
    keepalive 60 retry 10
    crypto ipsec transform-set high_security esp-aes esp-sha-hmac
    crypto ipsec df-bit clear
    crypto dynamic-map comcast-remote1_dynmap 20
    set transform-set high_security
    set isakmp-profile comcast-remote1_isakmpprof_dyncorp
    reverse-route
    crypto map svpn-map 109 ipsec-isakmp dynamic comcast-remote1_dynmap
    interface FastEthernet0/0
    bandwidth 102400
    no ip address
    speed 100
    full-duplex
    no cdp enable
    interface FastEthernet0/0.40
    encapsulation dot1Q 40
    ip address 65.x.x.x 255.255.255.0
    no cdp enable
    crypto map svpn-map
    crypto ipsec fragmentation before-encryption
    interface FastEthernet1/0
    switchport access vlan 4
    bandwidth 102400
    duplex full
    speed 100
    no cdp enable
    interface Vlan4
    ip address 192.x.x.x 255.255.255.0
    ip virtual-reassembly
    Thanks,
    Mike

    in your client class - method go()
    you have try catch like this: make changes at 2 places commented below
    try {
    Socket s = new Socket("localhost", 7000);
    // ObjectInputStream fromServer = new ObjectInputStream(s.getInputStream());
    fromServer = new ObjectInputStream(s.getInputStream());
    // ObjectOutputStream toServer = new ObjectOutputStream(s.getOutputStream());
    toServer = new ObjectOutputStream(s.getOutputStream());
    threadNum = (Integer) fromServer.readObject();
    int i = 0;
    System.out.println("Thread number: " + threadNum);
    System.out.println("Connected to server");
    do {
    } while (!disconnect);
    fromServer.close();
    toServer.close();
    System.out.println("Connection is closed");
    } catch (Exception err) {
    System.out.println(err.getMessage());
    }

  • Solution sought: fax from apps in OX 10.7, via fax modem and Comcast cable svc.

    recently relocated from the rural mountains into the city...  previous fax communications achieved via dedicated phone line and hp 3330mfp... now confronted with Comcast cable and the bundled services... previous fax services are now antiquated and had to be retired... intend to use apps "print to fax" capability and a 3rd party fax modem, interfacing with a Comcast high speed modem...  has anyone experienced or worked their way through such an issue, or is there an alternate solution to resolve my problem???  many thanks for your attention to my question...  

    Almost everyone I know who asks for a fax, is perfectly happy to get a 200 dpi black+white scan in TIF format attached to an email.

  • Max speed 1.0Mbps?

    Why is the max speed that I get with my WRT150N 1.0Mbps?  It doesn't matter where I'm at in the house, it doesn't matter if its an HP laptop, Dell laptop etc...the max speed i get is 1.0Mbps?

    What is the speed you are getting when you connect the computer straight to the Modem...?
    What is the speed you are getting on the wired computer(computer connected to the router via ethernet cable)...?
    Try upgrading your Router's Firmware and then reconfigure it...
    Go to website linksysbycisco.com/downloads.........insert model no of your router in serach tab......select proper version of your router........download the firmware file......save that file on desktop
    Follow these steps to upgrade the firmware on the device : -
    Open an Internet Explorer browser page on a computer hard wired to the router...
    In the address bar type - 192.168.1.1...Leave the Username blank & in Password use admin in lower case...
    Click on the 'Administration' tab- Then click on the 'Firmware Upgrade' sub tab- Here click on 'Browse' and browse the .bin firmware file and click on "Upgrade"...
    Wait for few seconds until it shows that "Upgrade is successful"  After the firmware upgrade, click on "Reboot" and you will be returned back to the same page OR it will say "Page cannot be displayed".
    Now reset your router :
    Press and hold the reset button for 30 seconds...Release the reset button...Unplug the power cable from your router, wait for 30 seconds and re-connect the power cable...Now re-configure your router...
    If your Internet Service Providor is Cable follow this link
    If your Internet Service Providor is DSL follow this link

  • I will be using a HDMI cable to connect an Apple TV box and a Comcast cable TV box to my TV. My TV has only one HDMI port.

    I will be using a HDMI cable to connect an Apple TV box and a Comcast cable TV box to my TV. My TV has only one HDMI port.
    To do this I will need a 2x1 HDMI splitter or a 2x1 HDMI auto switch (preferred).
    ?Is there any Apple TV HDMI port voltage?
    When using a HDMI auto switch to connect two devices to a HDMI TV, the
    Auto switch cable box only works for components that do not output continuous voltage over HDMI port when turned off.
    Do you know of any other solutions? Componets? Actual expierances?
    Full text below.
    Cable : HDMI switches expand the number of available HDMI ports on a high definition television allowing connection of cable boxes, Blu-ray players, and game consoles. A side benefit is that cable clutter is also eliminated by running a single HDMI cable to your HDTV from a switch and relocating the HDMI ports to a concealed location. The problem with most HDMI switches is that you have to either get up to push a button, or hunt for the remote control, to switch sources. The true mark of any great switching component is an ability to perform its function and remain transparent in its operation. This automatic HDMI switch is a plug-and-play away from offering everything you are looking for in an HDMI switch. Select a single output from up to three devices for signal delivery to your HDTV. Smart operation provides complete control for connect-and-forget operation. Powering on a device gives it output priority over the other devices. By powering down the device in use, output priority is returned to the last powered on device. Note: Auto switch function only works for components that do not output continuous voltage over HDMI port when turned off.
    Here is a typical HDMI 3-in 1-Out HDMI Auto Switch
    http://www.google.com/products/catalog?q=hdmi+auto+splitter&rls=com.microsoft:en -us&oe=UTF-8&startIndex=&startPage=1&rlz=1I7GGLF_en&um=1&ie=UTF-8&tbm=shop&cid=1 0340892278237558532&sa=X&ei=fTPmTtOiHuXq0gGc3sHfBQ&ved=0CHsQ8wIwAA#
    Thanks for any help. Sincerely,
    HDMI auto switch?

    Hi Erico,
    I tried what you said again but without success. I even updated the driver so that that audio driver is the same as the graphics driver i.e.. NVIDIA but this has not helped either:
    Do you have any other ideas?
    Many many thanks,
    Louise

  • Using my 30 inch Cinema display to watch my Comcast Cable?

    Just a thought, my monitor is much larger than my tv. Is there such a way to hook my cinema display into my comcast cable/dvr box?
    Thanks,
    Christine

    Call Gefen and see if they have that solution. If they don't, then I doubt one exists.
    http://www.gefen.com

  • Comcast cable and streaming media

    I just got Comcast cable access. Web browsing is super fast and email seems pretty smooth. BUT, I no longer can access internet radio thru iTunes, nor can I view or listen to any streaming media. BIG disappointment right off the bat. I've spoken to one Comcast support person who concluded it must be an Apple problem and told me to call them after checking out my connection and modem. I had Verizon DSL just 3 days before and everything worked beautifully.Network Utility returns a 100% failure when i ping a site most of the time, but then it works fine with 0% loss at other times. I'm going to contact Comcast again and talk to a different person.
    Any thoughts??

    "BUT, I no longer can access internet radio thru iTunes, nor can I view or listen to any streaming media."
    "I had Verizon DSL just 3 days before and everything worked beautifully."
    Judging by the above, apparently some settings must have changed when you switched over to Comcast. Check your iTunes preference settings & the preference settings of whatever apps you use to view streaming media.
    Another thing you can try is this;
    Repair permissions.
    Shut off your computer.
    Disconnect the cable modem from the power outlet for approximately 3 minutes.
    Reconnect the cable modem & turn on the computer.
    If none of the above works then recontact Comcast. However, this time ask/demand/be firm to speak w/a tier level 2 or 3 mac tech support. Make sure you get a case#.
    Explain the problem to the tech in detail.
    The Techs may have you unplug your modem like I explained previously. If they ask you if you already did this always tell them NO.
    Sometimes, they may ping your modem. Depends on the situation.
    Let them know how long you have been "having problems". Give them a date & remind them again about giving you a case # if they did not give you one in the beginning of the troubleshooting efforts.
    This is where your case # comes in. You do not pay for internet cable service that you never receive. Your case # is your only proof. The Tier Level Techs will provide further instructions. They are the only ones who provide case #s. (Very Important if dealing with Comcast - for your personal records, make a note of the date & time of the call, techs name & location. They will only give out their 1st names. This will come in handy if there is a discrepancy in your bill/you did not get your credit.)
    Good Luck

  • I recently had my comcast cable box upgraded to a wireless router/modem. I have terrible signal so I would like to install an Apple Time Capsule. How do I install it?

    I Have comcast cable in my home. It comes into my basement. Recently comcast upgraded our boxes to a wireless router/modem unit. We now have a poor wireless network. I decided to run an ethernet cable up into my kitchen so I can place a time capsule there. Is it as easy as just plugging the ethernet cable into the back of the time capsule or do I have reconfigure everything?

    Plug in the Ethernet cord, turn the Time Capsule on, then go Applications/Utilities/Airport Utility and you can configure the wireless there.

  • Comcast Cable Internet not working with router (WRT54G), but network is fine?

    My Comcast Cable Internet is not working with my router (WRT54G), but my home network is fine. The internet works without router.
    I have a WRT54G Wireless-G Broadband Router from Linksys.
    I was using Bellsouth DSL Internet up until two weeks ago.
    I had my DSL modem connected to my router, and the router let me use the internet and share some files and printers with my laptop upstairs.
    A few weeks ago we changed to Comcast cable. The technician came in and connected it himself, but only for the desktop. The internet worked perfectly, and still works perfectly on my desktop (the one downstairs). He didn't really give me any instruction or CD-roms for it.
    When I tried connecting my router, the internet stopped working. It was weird because the router worked for the file sharing and printer sharing between both my computers, but the internet didn't work. Although, the light for the internet is lit on the router itself.
    I even have this program called "AOL Network Magic" which shows a map of what is connected to the router, and it shows that the router and my laptop and desktop are connected, but then it has an "X" for the internet connection.
    I have tried everything. I lost all of my CDs and things that came with Linksys, but I downloaded some guides from the Linksys website and it doesn't really help. I tried something called "NetSet", but after I set everything up it says my router is not compatible or something with NetSet. I read a bunch of FAQs, I tried going to comcast and seeing if they had any FAQS about it, but I can't find anything.
    Maybe one of you can help me?
    Also, I don't know my modem's IP address. I had it for Bellsouth, and sometimes when I would lose my connection I would go there and click on "reconnect" or something like that.
    So the only way I can use the internet is to disconnect everything from my router and connect the ethernet cable directly to the modem.

    You may open the web setup utility page of the router by typing its IP address on your browser's address bar. By default, it is 192.168.1.1.  When you're asked for username, you may leave it blank.  For password, its "admin". If in case that does not work, reset your router at the back for 30 secs and do a power cycle again, see if it becomes accessible after that...
    "The war between heaven and hell depends on the choices we make, and those choices require sacrifice. That's the test"

  • IBook and Comcast Cable modem--can't connect to Internet? Please help

    Hello everyone!
    I have an ancient iBook . Here are the stats:Mac OSX version 10.0.3(told you it was ancient), 193MB, PowerPC G3. I bought it off of eBay about two in half years ago and it didn't come with an Airport card...I only received a laptop, the original box, some cds, and the adapter. I have a Comcast cable modem and I was wondering if anyone could help me figure out how to connect my iBook with the modem. Prior to Comcast, I had Bellsouth and all I had to do was simply unplug one end from my mother's Dell and plug it into my iBook and it instantly connected. However, I can't do it with the Comcast. Can anyone tell me how? Pretty please?
    iBook   Mac OS X (10.0.x)   PowerPC G3, 193MB

    You likely need to contact Comcast to get them to help you set up the iBook for your new cable internet service. They should be able to walk you through it.
    In case it may be an encryption problem, you may want to check out iFelix's post in this thread:
    http://discussions.apple.com/thread.jspa?threadID=877766
    Good luck.

  • Connecting Apple TV to Comcast Cable...

    I have a new Apple TV and also have comcast cable...also a oder bose lifestyle system (I know its not great sound). When we connect Apple TV to the HDTV via HDMI I no longer have sound out of the lifstyle system since it is connect to the cable box...Can we connect Apple TV to the Cable Box? Or does the bose system need to be connect to the TV so it works with both?..thks

    The Apple TV also has an optical audio out. If the Bose has that kind of input you can connect to it and leave the cable box alone. If the Bose system does not have digital inputs, you can connect cable and ATV2 using HDMI to the TV and then connect the Bose to the TV audio out....

  • Re: Satellite L855 - max speed with newest SSD

    I am looking to buy this notebook
    +Message was edited: broken link has been removed+
    (Croatian language, but will help)
    I am wondering if there is SATA 6GB/s so I can buy newest SSD to use max speed?
    thanks,
    Mario

    > I am wondering if there is SATA 6GB/s so I can buy newest SSD to use max speed?
    I guess you are speaking about the Satellite L855 series since this model mentioned in your subject.
    I dont think that Satellite L855 supports an SATA III HDD controller.
    I think its SATA I, maybe SATA II
    My notebook supports SATA I (1.5Gb/s) and I upgraded the unit with an SSD SATA III drive (6Gb/s). The SSD works fine but of course it does not reach the full 6Gb/s due to the HDD controller limitation.

  • Hub 1 max speed?

    Hi,
    A very quick question if I may?
    What is the max speed that the version 1 of the BT Hub is capable of delivering?
    Thanks,
    Arnak
    Solved!
    Go to Solution.

    Here are my home hub 1 stats. Upload speed is usually about 1.2 mb, but dropped due to some noise recently.
    It will sort itself out eventually.
    DSL Connection
    Link Information
    Uptime:
    13 days, 10:20:51
    Modulation:
    G.992.5 annex A
    Bandwidth (Up/Down) [kbps/kbps]:
    846 / 12,437
    Data Transferred (Sent/Received) [GB/GB]:
    1.50 / 13.05
    Output Power (Up/Down) [dBm]:
    12.5 / 0.0
    Line Attenuation (Up/Down) [dB]:
    18.0 / 33.5
    SN Margin (Up/Down) [dB]:
    11.5 / 4.5
    Vendor ID (Local/Remote):
    TMMB / IFTN
    Loss of Framing (Local/Remote):
    0 / 0
    Loss of Signal (Local/Remote):
    5 / 0
    Loss of Power (Local/Remote):
    0 / 0
    Loss of Link (Remote):
    0
    Error Seconds (Local/Remote):
    1,201 / 0
    FEC Errors (Up/Down):
    0 / 662,385,328
    CRC Errors (Up/Down):
    0 / 31,836
    HEC Errors (Up/Down):
    0 / 29,524
    There are some useful help pages here, for BT Broadband customers only, on my personal website.
    BT Broadband customers - help with broadband, WiFi, networking, e-mail and phones.

  • Max speed with Auto Flip?

    Hi!
    I need to scan a few pdf documents at fast speed as part of my work. I set the Auto Flip speed to 0.02 seconds in page transitions. Is this speed too fast for a 60Hz monitor? Will Acrobat be able to display all pages at this speed or will it miss some pages out? Also, is there a drop in quality this way or will all the images and text be catched and displayed in full quality at 0.02sec autoflip speed?

    > I am wondering if there is SATA 6GB/s so I can buy newest SSD to use max speed?
    I guess you are speaking about the Satellite L855 series since this model mentioned in your subject.
    I dont think that Satellite L855 supports an SATA III HDD controller.
    I think its SATA I, maybe SATA II
    My notebook supports SATA I (1.5Gb/s) and I upgraded the unit with an SSD SATA III drive (6Gb/s). The SSD works fine but of course it does not reach the full 6Gb/s due to the HDD controller limitation.

  • Max speed support on serial 2503

    Hi All,
    I have a router cisco 2503, I need to know what is Max. speed supported on serial interface? Presently we have 128KB leased line, and want to know weather I can upgrade the leased line to 256K with the same router ?
    THanks,
    A.S

    Hello,
    if you are referring to the two serial interfaces on your 2503, these are high-speed serial interfaces, which support speeds up to 2048kbps, or roughly 2MB.
    Check this link for more details:
    Cisco 2503 Router
    http://www.manucomp.com/cisco_catalogue/cisco_2503_router.html
    HTH,
    GP

Maybe you are looking for

  • I cannot get into iTunes Store: Error -54. Hp

    Hello, since a few days I cannot connect the Itunes store. When I start Itunes there appears: unknown error -54, look, if network is on function and try ist again.. I tried to get help from the Itunes support, but they told me to try, what you can fi

  • Photo library upgrade causes crash

    On starting iPhoto, I get the message  "The photo library needs to be upgraded to work with this version of iPhoto" If I click upgrade the app crashes. If I click Quit the app closes. Had problems with iPhoto as disk space was full, however now I can

  • IPhoto 8 to 11 update, no thumbs, no pics, library on external drive.

    Using MacBook 13" mid 2010 2.4Ghz running OS X 10.8.3, upgraded my iPhoto 8 to 11, after upgrade no thumbs, no pics, showing in iPhoto 11, the events, albums, and all correct but no pics, or thumbs just grey boxes.  The library is on external WD My P

  • Best way to backup and transfer everything?

    I'm using Time Machine to back up my Macbook Pro. I'm going to reformat the Macbook Pro, and I may continue using it or I may want to put all of the files from it onto my current iMac. Either way, I do not want to copy over any of the applications or

  • WD ABAP scroll bars and buttons don't appear

    If I test a transaction and the control or scroll bars don't appear when I test the service via SICF, how can I modifiy it to ensure the controls appear in SAPGUI versus webgui? Thanks Mikie