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wirelessguy
Guest
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 Posted:
Fri Aug 12, 2005 8:20 am Post subject:
benefit from 2 DSL Lines? |
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I have a router that allows me to do load balancing (Sonic Wall Pro
3060). So, Have two DSL lines that are being used from our local ISP.
I'm wondering if there is any benefit in using two DSL lines since its
shared bandwidth anyway.
Currently load balancing is set up to allow 50% of my traffic to be
routed to to DSL one and 50% to go to DSL two...
Is this any better than my using one DSL line and routing 100% of the
traffic through it?
thanks for any comments |
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David Schwartz
Guest
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| Posted:
Fri Aug 12, 2005 8:20 am Post subject:
Re: benefit from 2 DSL Lines? |
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"wirelessguy" <law_40@hotmail.com> wrote in message
news:1123824669.083490.106470@z14g2000cwz.googlegroups.com...
| Quote: | I'm wondering if there is any benefit in using two DSL lines since its
shared bandwidth anyway.
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Huh? What does "shared bandwidth" mean in this context?
DS |
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wirelessguy
Guest
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| Posted:
Sat Aug 13, 2005 12:20 am Post subject:
Re: benefit from 2 DSL Lines? |
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I'm speaking of sharing the same pool of available bandwidth back to
the Central Office. Based on my understanding, DSL is shared
bandwidth, where as a service like a T1 would be dedicated. |
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George Pontis
Guest
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| Posted:
Sat Aug 13, 2005 6:13 am Post subject:
Re: benefit from 2 DSL Lines? |
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In article <1123887554.270077.5510@g44g2000cwa.googlegroups.com>, law_40
@hotmail.com says...
| Quote: | I'm speaking of sharing the same pool of available bandwidth back to
the Central Office. Based on my understanding, DSL is shared
bandwidth, where as a service like a T1 would be dedicated.
|
There would be shared bandwidth somewhere in the path between your DSL circuit and
your ISP but that does not mean that it would be limiting. More likely you would
approach double the aggregate bandwidth with two DSL lines if you could keep both
occupied. The real challenge might be balancing the load so you get significant
utilization of both circuits. If you have enough users that bitmask or source-hash
distribution would work, then that would be a good solution. Round-robin has the
potential benefit of providing both WAN connections to a single user, but in
practice some applications (FTP, some HTTP, others ?) will break with some hosts.
Sorry I am not familiar with the Sonicwall product and its options for load-
balancing. The terms I used are the ones that would apply if you set it up using
pf. The concepts should be valid either way. |
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David Schwartz
Guest
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| Posted:
Sat Aug 13, 2005 1:32 pm Post subject:
Re: benefit from 2 DSL Lines? |
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"wirelessguy" <law_40@hotmail.com> wrote in message
news:1123887554.270077.5510@g44g2000cwa.googlegroups.com...
| Quote: | I'm speaking of sharing the same pool of available bandwidth back to
the Central Office. Based on my understanding, DSL is shared
bandwidth, where as a service like a T1 would be dedicated.
|
Your understanding is incorrect. Both DSL and a T1 provide you with your
own personal circuit back to the central office.
It is true that a DSL might provide you shared access to a port to your
Internet provider while a T1 would likely provide you dedicated access a bit
further down the line. However, that port is likely to be 155Mbps or higher,
so it's absurd to think that one DSL line to it is not better than two.
It's like saying you can't drink more water from the ocean with two
straws than one because there's only so much water in the ocean.
DS |
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wirelessguy
Guest
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| Posted:
Sun Aug 14, 2005 12:20 am Post subject:
Re: benefit from 2 DSL Lines? |
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Thanks for your feedback.
best wishes |
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Robert Redelmeier
Guest
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| Posted:
Sun Aug 14, 2005 11:54 pm Post subject:
Re: benefit from 2 DSL Lines? |
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wirelessguy <law_40@hotmail.com> wrote:
| Quote: | I have a router that allows me to do load balancing (Sonic
Wall Pro 3060). So, Have two DSL lines that are being used
from our local ISP. I'm wondering if there is any benefit
in using two DSL lines since its shared bandwidth anyway.
|
Well, you have 2x to/fro you, so you should see considerable
improvement on multiple simultaneous connections. You will
not see it on a single connection.
"Shared bandwidth" is a very difficult term to define.
Other posters have tried, and I may do no better:
The entire internet is based on shared bandwidth. That's what
makes it so cheap. This isn't voice where a dedicated 64kb/s
channel is made available end-to-end and it will literally
carry silence. Your ISP takes your packets, mixes them with
all the other customer's then shoves them all out one or more
OC-3s (or higher). The real question is whether they have
enough upstream capacity for their customers.
The main parts of the internet that are not shared are only
the end links. They carry exclusively your traffic (on your
T1, DSL or modem line) or the site's (on it's T1+).
| Quote: | Currently load balancing is set up to allow 50% of my traffic
to be routed to to DSL one and 50% to go to DSL two...
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Not bad. They have different IPs (interfaces have IPs, _not_
computers) so without very special link aggregation software
(at both ends VPN?) why cannot be used for one datastream at 2x.
| Quote: | Is this any better than my using one DSL line and routing
100% of the traffic through it?
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It could be 100% better. 2x bandwidth. But only the same for
single TCP connections. So any given webpage will not load
faster (nor any iso download faster). But multiple users at
your place will experience better service when they otherwise
would have collided.
| Quote: | thanks for any comments
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Sorry to be late to the thread, but I haven't seen any
answers I thought directly addressed your question.
-- Robert |
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wirelessguy
Guest
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| Posted:
Mon Aug 15, 2005 5:59 am Post subject:
Re: benefit from 2 DSL Lines? |
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Thanks for all comments.
best wishes, |
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bakerjay
Guest
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| Posted:
Tue Aug 16, 2005 8:32 pm Post subject:
Re: benefit from 2 DSL Lines? |
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never heard of a load balancing in DSL connection --->
but if your using two circuits, one might be for the internet and th
second one could be for something else---->> as a matter of fact indee
this could only be the reason why you are getting what you are !!
In India MTNL is gearing up to provide video on a second virtua
circuit !!
And thats really cool :-)
----bakerjay---
--
bakerjay |
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