Re: Dual Homing Networks with DSL and Cable
On Sun, Aug 15, 2004 at 01:00:02AM -0500, Eric Crist wrote:
-Original Message-
From: Lucas Holt [mailto:[EMAIL PROTECTED]
Sent: Sunday, August 15, 2004 12:29 AM
To: 'Eric Crist'; [EMAIL PROTECTED]
Subject: RE: Dual Homing Networks with DSL and Cable
You will have difficulty with this setup. Most large
providers require that you register your multihomed capacity
on a list. Otherwise traffic won't know to come in on a
particular interface or that it can go either way. I must
admit I'm going from memory here. I used to work at an ISP
about 5 years ago. At that time we went from a T3 with UUNET
to a multihomed setup with verio and uunet. It was rather
odd actually.. 3 t1s connected us to our modem banks at the
telco and then we had an ethernet connection to verio's pipe,
plus the T3 in our main office. Anyway, verio required us to
get on this list. They told us that most large ISPs use it
for routing. I suspect you will need static ips with the
cable provider to pull it off as well.
Actually, I was under the assumption that the multi-homed system would
process outgoing traffic, and the incoming would just return on the
appropriate IP. In this scenario, there's no need to register hosts.
Some networks will not pass outbound traffic that has a source address
NOT in the correct net. I have more than one inbound net, and have found
that, for a small number of BSD machines, putting up IPFW and using the
'fwd' rules works.
For the case of three networks all with static IP addresses, my network
card is assigned three IP addresses in ifconfig which results in lines
in rc.firewall (for example):
net1ip=a.b.c.123
net2ip=e.f.g.74
net3ip=h.i.j.202
Each of the networks has a different gateway with rc.firewall entries:
net1gw=a.b.c.1
net2gw=e.f.g.1
net3gw=h.i.j.1
Packets coming in addressed to netX1ip are replied to from that IP address,
so the following rules direct them to the correct default routes:
${fwcmd} add fwd all from ${net1ip} to ${net1ip}
${fwcmd} add fwd all from ${net2ip} to ${net23p}
${fwcmd} add fwd all from ${net3ip} to ${net3ip}
Works fine for me. Haven't done this for NAT'd IP addresses, though.
Thanks,
Eric F Crist
Best Access Systems
11300 Rupp Dr. Burnsville, MN 55337
Phone: 952.894.3830
Cell: 612.998.3588
Fax: 952-894-1990
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Re: Dual Homing Networks with DSL and Cable
it was said:
Lou Katz wrote:
On Sun, Aug 15, 2004 at 01:00:02AM -0500, Eric Crist wrote:
-Original Message-
From: Lucas Holt [mailto:[EMAIL PROTECTED]
Sent: Sunday, August 15, 2004 12:29 AM
To: 'Eric Crist'; [EMAIL PROTECTED]
Subject: RE: Dual Homing Networks with DSL and Cable
You will have difficulty with this setup. Most large
providers require that you register your multihomed capacity
on a list. Otherwise traffic won't know to come in on a
particular interface or that it can go either way. I must
admit I'm going from memory here. I used to work at an ISP
about 5 years ago. At that time we went from a T3 with UUNET
to a multihomed setup with verio and uunet. It was rather
odd actually.. 3 t1s connected us to our modem banks at the
telco and then we had an ethernet connection to verio's pipe,
plus the T3 in our main office. Anyway, verio required us to
get on this list. They told us that most large ISPs use it
for routing. I suspect you will need static ips with the
cable provider to pull it off as well.
Actually, I was under the assumption that the multi-homed system
would
process outgoing traffic, and the incoming would just return on the
appropriate IP. In this scenario, there's no need to register hosts.
Some networks will not pass outbound traffic that has a source address
NOT in the correct net. I have more than one inbound net, and have
found that, for a small number of BSD machines, putting up IPFW and
using the 'fwd' rules works.
For the case of three networks all with static IP addresses, my
network
card is assigned three IP addresses in ifconfig which results in lines
in rc.firewall (for example):
net1ip=a.b.c.123
net2ip=e.f.g.74
net3ip=h.i.j.202
Each of the networks has a different gateway with rc.firewall entries:
net1gw=a.b.c.1
net2gw=e.f.g.1
net3gw=h.i.j.1
Packets coming in addressed to netX1ip are replied to from that IP
address, so the following rules direct them to the correct default
routes:
${fwcmd} add fwd all from ${net1ip} to ${net1ip}
${fwcmd} add fwd all from ${net2ip} to ${net23p}
${fwcmd} add fwd all from ${net3ip} to ${net3ip}
Works fine for me. Haven't done this for NAT'd IP addresses, though
Hello,
I believe that this setup works for redundancy but does not aggregate
bandwidth. You need some sort of muxing mechanism, nee? What I mean is,
if each link is 1.5 Mbps, you could have three simultaneous users each
getting 1.5 Mbps, but if you had only one user, he/she would still get
only 1.5, not 4.5 Mbps. I think that what Mr Crist was asking is how to
get the 4.5 Mbps.
I have never done this in FreeBSD, but I recall some work to do this
very thing being done in altq (on OpenBSD) and perhaps dummynet has
this capability.
What Mr Holt is talking about is getting an ASN from ARIN. This is for
inbound redundancy on a multi-homed network. Should one of your links
go down, its IP space would still be reachable via your other link(s).
This is not applicable to Mr Crist's situation, if I understand what he
is trying to accomplish.
HTH,
Stheg
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RE: Dual Homing Networks with DSL and Cable
-Original Message- From: Lucas Holt [mailto:[EMAIL PROTECTED] Sent: Sunday, August 15, 2004 12:29 AM To: 'Eric Crist'; [EMAIL PROTECTED] Subject: RE: Dual Homing Networks with DSL and Cable You will have difficulty with this setup. Most large providers require that you register your multihomed capacity on a list. Otherwise traffic won't know to come in on a particular interface or that it can go either way. I must admit I'm going from memory here. I used to work at an ISP about 5 years ago. At that time we went from a T3 with UUNET to a multihomed setup with verio and uunet. It was rather odd actually.. 3 t1s connected us to our modem banks at the telco and then we had an ethernet connection to verio's pipe, plus the T3 in our main office. Anyway, verio required us to get on this list. They told us that most large ISPs use it for routing. I suspect you will need static ips with the cable provider to pull it off as well. Actually, I was under the assumption that the multi-homed system would process outgoing traffic, and the incoming would just return on the appropriate IP. In this scenario, there's no need to register hosts. Thanks, Eric F Crist Best Access Systems 11300 Rupp Dr. Burnsville, MN 55337 Phone: 952.894.3830 Cell: 612.998.3588 Fax: 952-894-1990 ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
RE: Dual Homing Networks with DSL and Cable
You will have difficulty with this setup. Most large providers require that you register your multihomed capacity on a list. Otherwise traffic won't know to come in on a particular interface or that it can go either way. I must admit I'm going from memory here. I used to work at an ISP about 5 years ago. At that time we went from a T3 with UUNET to a multihomed setup with verio and uunet. It was rather odd actually.. 3 t1s connected us to our modem banks at the telco and then we had an ethernet connection to verio's pipe, plus the T3 in our main office. Anyway, verio required us to get on this list. They told us that most large ISPs use it for routing. I suspect you will need static ips with the cable provider to pull it off as well. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Eric Crist Sent: Saturday, August 14, 2004 11:55 PM To: [EMAIL PROTECTED] Subject: Dual Homing Networks with DSL and Cable Hey all, I'm thinking about getting both DSL and Cable at home. I've currently got DSL with static Ips and I host servers. I would like to setup a dual-homed system, so I could utilize both download bandwidths. How should I best go about this, and does my desired setup make sense? Thanks, Eric F Crist Best Access Systems 11300 Rupp Dr. Burnsville, MN 55337 Phone: 952.894.3830 Cell: 612.998.3588 Fax: 952-894-1990 ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
