Traffic shaping/aggregating
My partner and I use VPNs to access our employer sites, and we frequently find that we're bottlenecking on uploads. So we decided to get a 2nd cable modem so we won't collide with each other. Although it would make sense that she would use one modem, and I the other; it stops making sense when you consider the various (shared) printers, file servers and other servers on our LAN that we need access to in our daily tasks. Does anyone know of good reference material regarding aggregating, or otherwise combining the two cable modem's throughput into a single network segment (using a router - preferably a Linksys running OpenWRT or somesuch)? I'm really looking for a HOWTO type document - or if someone knows the commands to execute, that would be a good start! --Bruce ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
Re: Traffic shaping/aggregating
On 12/26/06, Bruce Dawson [EMAIL PROTECTED] wrote: Although it would make sense that she would use one modem, and I the other; it stops making sense when you consider the various (shared) printers, file servers and other servers on our LAN that we need access to in our daily tasks. The simplest way to solve your problem is to put one cable modem on one LinkSys box, the other modem on a different LinkSys box, configure the LAN sides of each box with their own IP address, and manually configure each workstation to use a particular LinkSys box as the Internet gateway. It's a kludge, but it works. More complicated and somewhat less kludgey would be to use a router with at least three interfaces: One for the LAN and one for each modem. Assign static IP addresses to the nodes you want using a particular modem. Configure policy routing and NAT such that those IP address get routed via a particular interface and address. The Linux Advanced Routing Traffic Control HOWTO at http://lartc.org/ explains the details. One word of warning, last I tried it (on kernel 2.4 a few years ago), port forwarding via iptables was unaware of policy routing. As I recall, port forwarding always ended up using the default tables, or something along those lines. Does anyone know of good reference material regarding aggregating, or otherwise combining the two cable modem's throughput into a single network segment ... Aggregation usually means turning multiple feeds into one, in particular, such that a single node on your LAN would get twice the bandwidth, even for a single TCP connection. There's no real way to aggregate two consumer cable modem feeds like that. The ISP's routing plan doesn't include multiple routes to a single customer site. Two cable modems are effectively two different sites. They also don't support anything like layer two bonding. You can get a form of load balancing on a per-connection basis. That is, one TCP connection would use one modem, the next would use the other, and so on. This has all the same problems as NAT. It also does the wrong thing if two existing connections pinned to one modem start sucking bandwidth. Prolly not what you want. -- Ben ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
Re: Traffic shaping/aggregating
- Original Message - From: Ben Scott [EMAIL PROTECTED] To: gnhlug-discuss@mail.gnhlug.org Sent: Tuesday, December 26, 2006 12:06 PM Subject: Re: Traffic shaping/aggregating On 12/26/06, Bruce Dawson [EMAIL PROTECTED] wrote: Although it would make sense that she would use one modem, and I the other; it stops making sense when you consider the various (shared) printers, file servers and other servers on our LAN that we need access to in our daily tasks. The simplest way to solve your problem is to put one cable modem on one LinkSys box, the other modem on a different LinkSys box, configure the LAN sides of each box with their own IP address, and manually configure each workstation to use a particular LinkSys box as the Internet gateway. It's a kludge, but it works. More complicated and somewhat less kludgey would be to use a router with at least three interfaces: One for the LAN and one for each modem. Assign static IP addresses to the nodes you want using a particular modem. Configure policy routing and NAT such that those IP address get routed via a particular interface and address. The Linux Advanced Routing Traffic Control HOWTO at http://lartc.org/ explains the details. One word of warning, last I tried it (on kernel 2.4 a few years ago), port forwarding via iptables was unaware of policy routing. As I recall, port forwarding always ended up using the default tables, or something along those lines. Does anyone know of good reference material regarding aggregating, or otherwise combining the two cable modem's throughput into a single network segment ... Aggregation usually means turning multiple feeds into one, in particular, such that a single node on your LAN would get twice the bandwidth, even for a single TCP connection. There's no real way to aggregate two consumer cable modem feeds like that. The ISP's routing plan doesn't include multiple routes to a single customer site. Two cable modems are effectively two different sites. They also don't support anything like layer two bonding. You can get a form of load balancing on a per-connection basis. That is, one TCP connection would use one modem, the next would use the other, and so on. This has all the same problems as NAT. It also does the wrong thing if two existing connections pinned to one modem start sucking bandwidth. Prolly not what you want. -- Ben How about using the LinkSys RV042/82 series router which has dual wide area network connections and can do load balancing? -Alex ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
Re: Traffic shaping/aggregating
On 12/26/06, hewitt_tech [EMAIL PROTECTED] wrote: How about using the LinkSys RV042/82 series router which has dual wide area network connections and can do load balancing? How about cutting some text when quoting a message? ;-) (Your 2-line reply quoted 50 lines of original.) Netiquette aside... I wasn't aware of those products. The RV082 looks like a neat little box. Do you have any experience with those boxes doing what Bruce wants to do? That is, have one user (LAN IP address) associated with one WAN feed, and another user associated with the other WAN feed? The user manual doesn't make it clear if that is even supposed to be possible, and LinkSys doesn't always deliver on their claims even when they are clear. :) Any info on hackability of the RV082/RV042 units? In particular, can they be hacked to run a custom Linux firmware? I found http://tinyurl.com/y7hn9b but it's mainly speculation, and about a year old. I found http://openixp.phj.hu/ but it appears to be stagnant. Cheers, -- Ben ___ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
