Date: Wed, 17 Jan 2001 17:09:26 -0700 From: "Lorin Lund" <wbs@infowest.com> To: "\"Alexander Derevyanko\"" <der@pc759.cs.msu.su> Cc: <freebsd-questions@freebsd.org> Subject: Re: Two subnetworks on one physical segment. Message-ID: <004c01c080e3$0709fb00$0200fea9@infowest.com>
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This is a multi-part message in MIME format. ------=_NextPart_000_0043_01C080A8.3F3B8420 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Yes, it is legal to have two different IP subnets on the same ethernet = LAN. Yes, can make your FreeBSD box talk to both subnets with a single NIC. = You just have to assign two different IP addresses to the same card. (man ifconfig -- see 'alias' = parameter) I just tested this. "rc.conf" was ifconfig_ed1=3D"inet 169.254.0.1 netmastk 255.255.255.0" gateway_enable=3D"YES" "rc.conf" now ifconfig_ed1=3D"inet 169.254.0.1 netmastk 255.255.255.0" ifconfig_ed1_alias0=3D"inet 192.168.0.1 netmask 255.255.255.0" gateway_enable=3D"YES" I left my Win98 notebook at it's orignal address (169.254.0.2) and = changed my 2nd FreeBSD box to 192.168.0.4. The Win98 notebook was able to telnet into the FreeBSD box at = 192.168.0.4, and that FreeBSD box could ping the Win98 notebook. ----- Original Message ----- From: Alexander Derevyanko <der@pc759.cs.msu.su> To: <freebsd-questions@freebsd.org> Sent: Wednesday, January 17, 2001 1:25 PM Subject: Two subnetworks on one physical segment. > > Hello! > > Few days ago i see strangely conigured network, and > i need some advise. The problem is: > On one physical network segment (one hub + coaxial cable connected to > hub) > where exists two different networks, with different first byte of IP > address. > Netmasks are 0xffffff00. > Some computers belong to one of the network, some to other. > Is such configuration allowed ? If so, how can i make my FreeBSD = server > to exist > in both of the networks, so all packets directed to the both networks > will > go directly, and all other - directed to well-known gateway? > I have two IP addresses, from both networks. > > Best regards, > Alexander. > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message > ------=_NextPart_000_0043_01C080A8.3F3B8420 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content=3D"text/html; charset=3Diso-8859-1" = http-equiv=3DContent-Type> <META content=3D"MSHTML 5.00.2614.3500" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial size=3D2>Yes, it is legal to have two different = IP subnets=20 on the same ethernet LAN.<BR><BR>Yes, can make your FreeBSD box talk to = both=20 subnets with a single NIC. You<BR>just have to assign two = different<BR>IP=20 addresses to the same card. (man ifconfig -- see = 'alias'=20 parameter)<BR><BR>I just tested this. "rc.conf" was</FONT></DIV> <DIV><FONT face=3DArial size=3D2>ifconfig_ed1=3D"inet 169.254.0.1 = netmastk=20 255.255.255.0"<BR>gateway_enable=3D"YES"<BR></FONT></DIV> <DIV><FONT face=3DArial size=3D2>"rc.conf" now</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2><FONT face=3DArial = size=3D2>ifconfig_ed1=3D"inet=20 169.254.0.1 netmastk 255.255.255.0"<BR>ifconfig_ed1_alias0=3D"inet = 192.168.0.1=20 netmask 255.255.255.0"<BR>gateway_enable=3D"YES"<BR></FONT><BR>I left my = Win98=20 notebook at it's orignal address (169.254.0.2) and = changed<BR>my 2nd=20 FreeBSD box to 192.168.0.4.<BR>The Win98 notebook was able to telnet = into the=20 FreeBSD box at 192.168.0.4,<BR>and that FreeBSD box could ping<BR>the = Win98=20 notebook.<BR>----- Original Message -----<BR>From: Alexander Derevyanko = <<A=20 href=3D"mailto:der@pc759.cs.msu.su">der@pc759.cs.msu.su</A>><BR>To: = <<A=20 href=3D"mailto:freebsd-questions@freebsd.org">freebsd-questions@freebsd.o= rg</A>><BR>Sent:=20 Wednesday, January 17, 2001 1:25 PM<BR>Subject: Two subnetworks on one = physical=20 segment.<BR><BR><BR>><BR>> Hello!<BR>><BR>> Few days ago i = see=20 strangely conigured network, and<BR>> i need some advise. The problem = is:<BR>> On one physical network segment (one hub + coaxial cable = connected=20 to<BR>> hub)<BR>> where exists two different networks, with = different=20 first byte of IP<BR>> address.<BR>> Netmasks are = 0xffffff00.<BR>> Some=20 computers belong to one of the network, some to other.<BR>> Is such=20 configuration allowed ? If so, how can i make my FreeBSD server<BR>> = to=20 exist<BR>> in both of the networks, so all packets directed to the = both=20 networks<BR>> will<BR>> go directly, and all other - directed to=20 well-known gateway?<BR>> I have two IP addresses, from both=20 networks.<BR>><BR>> Best regards,<BR>>=20 Alexander.<BR>><BR>><BR>> To Unsubscribe: send mail to <A=20 href=3D"mailto:majordomo@FreeBSD.org">majordomo@FreeBSD.org</A><BR>> = with=20 "unsubscribe freebsd-questions" in the body of the=20 message<BR>><BR></DIV></FONT></BODY></HTML> ------=_NextPart_000_0043_01C080A8.3F3B8420-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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