From: Ed Lui (edwlui@gmail.com)
Date: Fri Feb 25 2005 - 12:27:45 GMT-3
Dan,
That is what I thought it is doing.
-- Edward (A+, Net+, MCP, MCP+I, MCSE, CCNA, CCNP)On Fri, 25 Feb 2005 11:27:12 +0200, Danshtr <danshtr@gmail.com> wrote: > The only thing I can think of, is the device is a proxy, which > downloads the file in two parts simultaneously. > > I don't remember if all ftp server support checkpoints. > > > On Thu, 24 Feb 2005 18:47:29 -0800, Ed Lui <edwlui@gmail.com> wrote: > > Hi Eric & Dan, > > > > Thanks for all your input. They are invaluable......... What I thought > > was maybe there is an application/daemon keeps watching for the > > traffice flow. Then if needed, the router will run another NAT on the > > 2nd wan link to utilize the wan2 bandwidth. But then, I was told that > > the destination only sees the source ip from wan1.......So, it drives > > me nuts.... > > > > All of a sudden, I am thinking the router may be able to spoof the > > source ip to get the full combined bandwidth from the 2 wan links. Is > > it possible or I am too crazy? Or I need to go back to study the IE > > stuff? > > > > Anyway, thanks :-) > > > > > > On Thu, 24 Feb 2005 16:28:24 -0800, Eric Cables <ecables@gmail.com> wrote: > > > The only way this could work is if you had two links, and ran BGP. > > > Even if you had two links to a single provider, and bridged the > > > interfaces, only one would be able to transmit at any given time > > > (spanning tree would block the other). > > > > > > If you have separate providers, the only way I can see this working is > > > by rotating which provider is used for outbound traffic. Since both > > > providers use separate IP space, there is no way to simulate a single > > > source IP and have both providers advertise that to their peers. > > > > > > So to answer your question, there is simply some method the device > > > uses to round robin outbound traffic between providers. It will still > > > achieve the result of increased bandwidth, but you won't be able to > > > utilize more than a single provider's total bandwidth to a single > > > destination. > > > > > > Hope this helps, > > > > > > On Thu, 24 Feb 2005 16:01:14 -0800, Ed Lui <edwlui@gmail.com> wrote: > > > > Hi Dan, > > > > > > > > Thanks for your reply and information. You also answer my question > > > > about load balance traffic to server. > > > > > > > > I wish I have the device to lab it up to see if it is true or not. I > > > > understand about the NAT feature you mentioned. That device also comes > > > > with the protocol binding feature, so you can configure certain > > > > traffic goes thru certain wan link. I completely understand that part. > > > > > > > > What I was told is(sounds like load sharing rather than load balance) : > > > > > > > > |---- wan1 -----| > > > > destination ip ------------internet cloud | |-----user > > > > |---- wan2 -----| > > > > > > > > The user initiates an ftp connection, the connection can be bundled > > > > up(multilink) to the destination to get the combined bandwidth, and > > > > the destination sees only wan1's ip address. Because the destination > > > > only accept ftp connection from wan1's ip address. To my knowledge, it > > > > doesn't sound logical. That's why I wish you all experts can give me > > > > 2CENTS. > > > > > > > > :-) > > > > -- > > > > Edward > > > > (A+, Net+, MCP, MCP+I, MCSE, CCNA, CCNP) > > > > > > > > On Thu, 24 Feb 2005 19:04:02 +0200, Danshtr <danshtr@gmail.com> wrote: > > > > > There R two thing to consider: > > > > > > > > > > 1. Load blalancing users from your network to the internet > > > > > 2. load balancing traffic going towards your servers from the internet > > > > > > > > > > IIRC, LinkSys is doing only the first. > > > > > For loadbalancing your servers you will need to run bgp or to use > > > > > tools like "Linkprof" from www.radware.com (I use this tool and I am > > > > > very happy with it. I use 3 ISP with 4 links and 4 public address > > > > > ranges) > > > > > > > > > > How does it work: Simple NAT. > > > > > 1. For loadblalancig your users surfing the net, some connection will > > > > > use ISP1 public address for NAT/PAT other users will use ISP2 NAT/PAT. > > > > > 2. For loadbalancing you servers, "Linkproff" is DNS server which will > > > > > do roundrobin loadblalancing, each time returning diffrent ISP public > > > > > address. > > > > > > > > > > Same thing can be done with Linux/BSD but some custom scripting is needed > > > > > > > > > > > > > > > On Thu, 24 Feb 2005 08:02:05 -0800, Ed Lui <edwlui@gmail.com> wrote: > > > > > > Hi all, > > > > > > > > > > > > Linksys(Division of Cisco System) made a dual wan vpn router. > > > > > > According to the documentation, it can load balance(weighted round > > > > > > robin per users manual) between the 2 wan ports to utilize the full > > > > > > banwidth of the 2 links(something like ppp multilink). Wonder if > > > > > > someone knows how that works, I personally never tried it. But I was > > > > > > told that wan1(2mbps downstream) and wan2(3mbps) together can reach > > > > > > the destination with only ONE ip address(either wan1 or wan2) but get > > > > > > 5mbps downstream. Can this really happen? How? > > > > > > > > > > > > Product link : http://www.linksys.com/products/product.asp?grid=34&scid=29&prid=639 > > > > > > > > > > > > TIA, > > > > > > > > > > > > -- > > > > > > Edward > > > > > > (A+, Net+, MCP, MCP+I, MCSE, CCNA, CCNP) > > > > > > > > > > > > _______________________________________________________________________ > > > > > > Subscription information may be found at: > > > > > > http://www.groupstudy.com/list/CCIELab.html > > > > > > > > > > > > > > > > > > > > > -- > > > > > Best regards, > > > > > Dan > > > > > > > > > > <a href="http://www.spreadfirefox.com/?q=affiliates&id=0&t=1">Get > > > > > Firefox!</a> > > > > > > > > _______________________________________________________________________ > > > > Subscription information may be found at: > > > > http://www.groupstudy.com/list/CCIELab.html > > > > > > > > > > -- > > > Eric Cables > > > Network Engineer, CCIE #12799 > > > > > > > -- > > Edward > > (A+, Net+, MCP, MCP+I, MCSE, CCNA, CCNP) > > > > -- > Best regards, > Dan > > <a href="http://www.spreadfirefox.com/?q=affiliates&id=0&t=1">Get > Firefox!</a>
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