Another crappy part of the upload cap is that when your uploading bandwidth is fully used up for @home, your download speeds also come close to crawling like a snail.
I have never seen my dl speeds crap out because of my upload speeds.....it the upload (file or webpage) request that is getting slowed...hence the page or file seems to take more time to come up.
what authentication does the "cable modem" do? I thought it was just a specialized router that converts the cable signal to Ethernet. Correct me if I'm wrong.
As for bandwidth accounting, capping for an account is more complicated than capping by IP address. Since almost everybody has a single IP address, it's likely not worth the extra effort for them to cross-reference by account holder just to limit bandwidth (i.e. it's much easier for them to place a 128 Kbps cap across the board than to chase down the rare offender).
As for bandwidth accounting, capping for an account is more complicated than capping by IP address. Since almost everybody has a single IP address, it's likely not worth the extra effort for them to cross-reference by account holder just to limit bandwidth (i.e. it's much easier for them to place a 128 Kbps cap across the board than to chase down the rare offender).
I use @Home, and when my upload is fully used, my download goes speed goes down to almost nothing.
dabuddha
Lifer
- Apr 10, 2000
- 19,579
- 17
- 81
TheManiac: mines the same way
Zwingle: do you use charter@home? just asking cause i live in ft worth and its what i use
is there any way you can combine the speed of both ips together like you could with dialup modems (aka shotgun)
that'd be really sweet
also would you need another modem or anything else hardware related?
Zwingle: do you use charter@home? just asking cause i live in ft worth and its what i use
is there any way you can combine the speed of both ips together like you could with dialup modems (aka shotgun)
that'd be really sweet
also would you need another modem or anything else hardware related?
hopefully the peitition will make any difference, 14kB/sec is so slow.....so getting another ip wouldn't really make a difference at this speed. i just want faster upstream!!!! :|
i shouldn't be telling you'll this... but.... here it goes...
first of all, of course if you are uploading a file, your download speeds with decress (if you are uploading the file at the very fastest upload speed you can get). This is because of the "messages" that are sent back and forth between EVERY computer that has an established tcp conversation. when viewing a webpage, you get info and send out info to such as "i got packet 1/39" and such like that... this is a very primitive example and i am not going into all the crap because this is not the point of the message,... the point is:
charter@home assigns bandwidth via MAC addresses... i am not going to say anymore about that except i have confirmed this and the person that told me this is the 3rd shift senior engineer at the tier 3 support (where @home's servers are and such)... i am probably nto going to read though this posting again, so if you'll reply to this message as "you are a lying poc (piece of craP)" or "you cannnot spell" or any such, it isn't going to matter to me...
buying 2 ips isn't going to matter unless TOO much unless you get charter @home personal.. i don't care to argue about that either....
anyways....
first of all, of course if you are uploading a file, your download speeds with decress (if you are uploading the file at the very fastest upload speed you can get). This is because of the "messages" that are sent back and forth between EVERY computer that has an established tcp conversation. when viewing a webpage, you get info and send out info to such as "i got packet 1/39" and such like that... this is a very primitive example and i am not going into all the crap because this is not the point of the message,... the point is:
charter@home assigns bandwidth via MAC addresses... i am not going to say anymore about that except i have confirmed this and the person that told me this is the 3rd shift senior engineer at the tier 3 support (where @home's servers are and such)... i am probably nto going to read though this posting again, so if you'll reply to this message as "you are a lying poc (piece of craP)" or "you cannnot spell" or any such, it isn't going to matter to me...
buying 2 ips isn't going to matter unless TOO much unless you get charter @home personal.. i don't care to argue about that either....
anyways....
....he must have been reprogramming my modem. Is this correct dman? I would assume he was resetting my modem to accept 2 incoming signals. If this makes a difference, he told me that the second IP is in a different subnet.
and
what authentication does the "cable modem" do? I thought it was just a specialized router that converts the cable signal to Ethernet. Correct me if I'm wrong.
I don't know the technical details, but, the modem has a unique ID (Similar to or equal to a MAC Address). When you're modem connects to get it's IP address it is also sending out some form of encrypted data which includes it's unique ID. Based on this address the cable head end knows a lot about your setup. It knows what modem it is, what user account is assigned to the modem, and can potentially get more information such as the line quality, etc. This is all done behind the scenes and before you can get connected.
So, Yes, The modem is a tranceiver--it does convert from cable to ethernet--but it also does more (higher layer) items as well. Such things as encrypting your packets (so your neighbors can't "sniff" your traffic), DHCP, NAT (available) and more. For Example: The Surfboard 3100 Cable modem that I have is capable of doing NAT so it COULD allow multiple machines on my network with a single external IP address and replace my Netgear RT311 router if the cable company would enable those features. They don't.
Thus, what this means, is the cableco can and does restrict bandwidth and MORE. Not all cable companies do this, not all equipment is capable of it (my old internal Surfboard 1000 internal ISA Adapter was not programmable from the head end and was sometimes faster than the capped 2way modem my friend had at downloads).
It is my understanding that ALL DOCSIS modems are programmable equipment and I do know that Adelphia does implement caps in their 2way Modems.
I have never seen my dl speeds crap out because of my upload speeds.....it the upload (file or webpage) request that is getting slowed...hence the page or file seems to take more time to come up.
Not sure what you mean by the last part, but, on my 1way system--(2way really, but, cable company requires I use dialup for the upstream)--if I'm uploading a file (say napster) and try to hit some web pages the system crawls! I'm not sure of the exact details, but, The nature of most applications (HTTP, FTP, over TCP/IP) is to send a request for data and/or an acknoldgement of data received before the next packet can be sent. Thus, if something is taking up all of your upload bandwidth (napster upload), you have to wait until a break in traffic occurs before the next request/acknowledgement can be sent to receive your next set of download packet(s). (This is one reason why DefaultRCVWindow registry setting is very helpful-- you can configure how much can be downloaded in each packet before the next request/acknowledgement).
I will say, that on a 2way cable system with 128Kbps upload stream normal web surfing and downloading isn't going to be a problem. But, running a file server where people are using most of your upload bandwidth can and will slow your surfing down because you run low on upload bandwidth (used to send those requests and acknowledgements). (BTW, Much of the way this works is configurable, to an extent, via the OS so you can tweak it for better performance but eventually you hit a wall where you can't get more!)
There are a lot more knowledgeable people than myself on this matter and I'm just repeating what I've read in the past and taught myself. So, if I made a minor mistake on wording I apologise, but, I believe my concepts are correct.
DSL Reports is a great resource for reading up on these issues and if you read through the forums there you will learn a lot more than what I have touched on here. DSL Reports (Also good for anything networking related including cable systems)
and
what authentication does the "cable modem" do? I thought it was just a specialized router that converts the cable signal to Ethernet. Correct me if I'm wrong.
I don't know the technical details, but, the modem has a unique ID (Similar to or equal to a MAC Address). When you're modem connects to get it's IP address it is also sending out some form of encrypted data which includes it's unique ID. Based on this address the cable head end knows a lot about your setup. It knows what modem it is, what user account is assigned to the modem, and can potentially get more information such as the line quality, etc. This is all done behind the scenes and before you can get connected.
So, Yes, The modem is a tranceiver--it does convert from cable to ethernet--but it also does more (higher layer) items as well. Such things as encrypting your packets (so your neighbors can't "sniff" your traffic), DHCP, NAT (available) and more. For Example: The Surfboard 3100 Cable modem that I have is capable of doing NAT so it COULD allow multiple machines on my network with a single external IP address and replace my Netgear RT311 router if the cable company would enable those features. They don't.
Thus, what this means, is the cableco can and does restrict bandwidth and MORE. Not all cable companies do this, not all equipment is capable of it (my old internal Surfboard 1000 internal ISA Adapter was not programmable from the head end and was sometimes faster than the capped 2way modem my friend had at downloads).
It is my understanding that ALL DOCSIS modems are programmable equipment and I do know that Adelphia does implement caps in their 2way Modems.
I have never seen my dl speeds crap out because of my upload speeds.....it the upload (file or webpage) request that is getting slowed...hence the page or file seems to take more time to come up.
Not sure what you mean by the last part, but, on my 1way system--(2way really, but, cable company requires I use dialup for the upstream)--if I'm uploading a file (say napster) and try to hit some web pages the system crawls! I'm not sure of the exact details, but, The nature of most applications (HTTP, FTP, over TCP/IP) is to send a request for data and/or an acknoldgement of data received before the next packet can be sent. Thus, if something is taking up all of your upload bandwidth (napster upload), you have to wait until a break in traffic occurs before the next request/acknowledgement can be sent to receive your next set of download packet(s). (This is one reason why DefaultRCVWindow registry setting is very helpful-- you can configure how much can be downloaded in each packet before the next request/acknowledgement).
I will say, that on a 2way cable system with 128Kbps upload stream normal web surfing and downloading isn't going to be a problem. But, running a file server where people are using most of your upload bandwidth can and will slow your surfing down because you run low on upload bandwidth (used to send those requests and acknowledgements). (BTW, Much of the way this works is configurable, to an extent, via the OS so you can tweak it for better performance but eventually you hit a wall where you can't get more!)
There are a lot more knowledgeable people than myself on this matter and I'm just repeating what I've read in the past and taught myself. So, if I made a minor mistake on wording I apologise, but, I believe my concepts are correct.
DSL Reports is a great resource for reading up on these issues and if you read through the forums there you will learn a lot more than what I have touched on here. DSL Reports (Also good for anything networking related including cable systems)
Dman was pretty acurate with his post. Just a few notes though. You can change the upload/download at the CM, even after it has been provisioned. The speeds are just set via normal SNMPv1 vars. Note though, that there are restrictions that the cable operator can put into the CMTS (headend) to limit your speed and generate alarms if your speed exceeds a preset limit. Also, you will loose any settings you change when you reboot the CM. Note: This info only deals with DOCSIS CM/CMTS systems.
Ok.....hum.....If I understood what he said.....They can modify your bandwidth thru you MAC address which your modem has.....this would be where the "authentication" comes in. It verifies that your MAC address is allowed on the network. This is also why when you get a new modem you need to give them your serial number and MAC address. So then they can "provision" the modem. In other words allow it to have access to their service. So is this why I was down for an hour when I ordered my second IP? Was he modifying my MAC account? Modifying by bandwidth thru the MAC address? Who knows? All I know is that my speed on both computers independantly is as fast as it was on my 1 computer when i wasn't sharing thru a proxy. Both ways...up and down.
so wait a minute. . .wouldn't getting a router and connecting 2 comps to it with seperate IP's do the same thing as telling @home that you want another IP and having them charge you for it?. . .i mean. . .not that you would save any money. . .the way i figure it would take about a year to start saving money from getting the router instead of paying for the extra IP.
but my question is, would getting a router and thus seperate IP's for each comp leave me with the same speed as if @home gave me another IP?
but my question is, would getting a router and thus seperate IP's for each comp leave me with the same speed as if @home gave me another IP?
I have Optimum Online in Connecticut (from Cablevision) for my cable service. On average, I get about 500kb downloading (most sites are too slow to give more 
), and 100-400kb uploading. My max upload speed is set at 1.3mbps (I called up Cablevision to check) and the max download speed is 3.5mbps (megabytes btw for all speeds)... why buy @home if it's so slow comparatively? There are about 10 broadband services in Connecticut right now, and then @home which sits with no customers . Why does anyone ever sign up for it???
), and 100-400kb uploading. My max upload speed is set at 1.3mbps (I called up Cablevision to check) and the max download speed is 3.5mbps (megabytes btw for all speeds)... why buy @home if it's so slow comparatively? There are about 10 broadband services in Connecticut right now, and then @home which sits with no customers . Why does anyone ever sign up for it???I have to agree with that dude saying that this thread has A LOT of opinion based answers. I have a friend who works on Tier Two Tech Support for AT&T @home. I will answer to quesitons for you.
1. When you sign up for another IP you ARE getting the same speed cable connection for $5. eg. My Comp get a 1.5Mb d/l and 128kb u/l. And my gf's Laptop gets the same.
2. AT&T @home caps the u/l speed themselves. It is not the line quality or anything like that. The company caps it (bastards, lol)
1. When you sign up for another IP you ARE getting the same speed cable connection for $5. eg. My Comp get a 1.5Mb d/l and 128kb u/l. And my gf's Laptop gets the same.
2. AT&T @home caps the u/l speed themselves. It is not the line quality or anything like that. The company caps it (bastards, lol)
DavidTigerFan: I am in Charleston too..you go to CofC?
btw...we're capped at 384kbit/s, 128kbit/s is just book thingy they didn't really cap it there
btw...we're capped at 384kbit/s, 128kbit/s is just book thingy they didn't really cap it there
Bottom line, if you aren't sure of what your cable co offers, contact them. If they have this feature (as was originally posted in this thread) of doubling your bandwidth by adding an IP-- sign up for it. Then do some benchmarks. You'll soon know what the truth is. It is apparent to me that at least 2 people have verified for the extra cost they get double the bandwidth. That is a hot deal if you need more speed.
If you want to dispute it w/o trying yourself or contacting your cable co, visit another forum where it is appropriate to discuss. Such as here:
DSL Reports - View the "Cable" forums.
or Here:
Anandtech Networking Forum
Because all this varies by cable company, equipment used, and your actual location, it's useless to go any further. No matter what you said, someone will be able to say it's not true for them!
If you want to dispute it w/o trying yourself or contacting your cable co, visit another forum where it is appropriate to discuss. Such as here:
DSL Reports - View the "Cable" forums.
or Here:
Anandtech Networking Forum
Because all this varies by cable company, equipment used, and your actual location, it's useless to go any further. No matter what you said, someone will be able to say it's not true for them!
Zwingle,
No offense, but you thought BlackIce was too hard to configure??
It has one setting with four possible options. How much easier does it need to be?
Acme
No offense, but you thought BlackIce was too hard to configure??
It has one setting with four possible options. How much easier does it need to be?
Acme
Acme,
the problem with BlackIce is that it doesn't support wildcard blocking. I.e. you can't block an IP subnet, or all hosts from a particular ISP. I use BlackIce because it is a solid, easy-to-use product, but this missing feature alone is a big problem.
the problem with BlackIce is that it doesn't support wildcard blocking. I.e. you can't block an IP subnet, or all hosts from a particular ISP. I use BlackIce because it is a solid, easy-to-use product, but this missing feature alone is a big problem.
GoldenTiger - those values are megabits per second. 3.5 mbps is roughly 500 kBps so that is probably why you see that as a limit.
Whoever thought that a router would split your bandwidth equally I would beg to differ. I have several computers on a home network and I have seen that the bandwidth pretty much goes where it is needed. My father was downloading three different files on one box and soaking up about 55 kBps out of the maximum 70 kBps I usually see on my ADSL line. At the same time I was playing an online game which I would guess was probably using the rest. I did notice the delay on my game had gone up slightly (around 20%/50 ms) but otherwise all was well. From what has been said about the cable caps being enforced per IP address the only way that would be of help would be if you needed more bandwidth than you were already using, such as running a server and also trying to surf.
Whoever thought that a router would split your bandwidth equally I would beg to differ. I have several computers on a home network and I have seen that the bandwidth pretty much goes where it is needed. My father was downloading three different files on one box and soaking up about 55 kBps out of the maximum 70 kBps I usually see on my ADSL line. At the same time I was playing an online game which I would guess was probably using the rest. I did notice the delay on my game had gone up slightly (around 20%/50 ms) but otherwise all was well. From what has been said about the cable caps being enforced per IP address the only way that would be of help would be if you needed more bandwidth than you were already using, such as running a server and also trying to surf.
i have a old nortel modem its the lancity one with the big black heatsink any ways i know that it is not DOCSIS compatible and i was wondering if there was any way to uncap it? btw: i have MediaOne RoadRunner in Detroit, MI
Adul
Elite Member
Not the same for me. I have 3 ips and I can not get that wonderful bandwidth for each IP. At least for uploads i can not. But my downloads are a healthy 480 KB/sec
Uncapping upstream bandwidth on cable service would overload and crash their machines.
Cable broadcasters were always made for 1 way traffic, making them not very nimble in handling incoming data (higher voltage).
I have adelphia service and it is capped at 128K in my area.
Some areas it has been upped to 50K/sec. But only in non heavy traffic
areas.
Controller, I see you putting in no informative posts.
Cable broadcasters were always made for 1 way traffic, making them not very nimble in handling incoming data (higher voltage).
I have adelphia service and it is capped at 128K in my area.
Some areas it has been upped to 50K/sec. But only in non heavy traffic
areas.
Controller, I see you putting in no informative posts.
I have Charter@Home in Greenville, SC and I have downloaded at over 700KB/Sec when I have a good clean connection to a server. My upload however is capped at 15KB/Sec
KB = Kilobytes
kb = Kilobits
KB = Kilobytes
kb = Kilobits
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