Date: Thu, 3 Jan 2002 07:39:20 -0500 From: "Naga R Narayanaswamy" <nraju@mindspring.com> To: <freebsd-net@freebsd.org> Subject: Bridging and 'pseudo-device tap' and PPPoE Message-ID: <006f01c19453$aad27440$6a092042@compaq>
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[-- Attachment #1 --] Hello: I want to create pseudo ethernet devices to simulate many NICs on a PC. In Solaris, we can do "ifconfig hme0:1 10.1.1.1 up" hme0:2 etc to create logival interfaces. I am trying to do a similar thing on FreeBSD. But after searching the archives, I find that I have to use tap device. Is there any other way than the approach I am using below. I reconfigured the kernel and I have configured the tap device. ifconfig tap0 shows a MAC address and UP status. I assigned a IP address also. I want to make fxp0 and tap0 in one bridge group. I tried both approaches, using "option BRIDGE" and ng_bridge example in /usr/share/examples. Is bridging supposed to work with tap devices? I do not see the bridging happen between tap0 and fxp0. I can see the packet written on tap device when I do a "hexdump /dev/tap0", but not on fxp0 (using ethereal). (I am doing a ping out of tap interface). And when I have bridging turned on using ng_bridge, if I initiate a PPPoE session, I get socket already connected warning, but I do not see the PADI packet on the fxp0 interface at all. The goal is that I want to use tap0 device in ppp.conf and initiate a ppp -ddial <service> The goal is to have 100 tap devices and initiate pppoe sessions over each of the tap sessions to simulate a 100 NIC cards with different mac addresses. Thanks Naga [-- Attachment #2 --] <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=windows-1252"> <META content="MSHTML 5.50.4134.600" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=#ffffff><FONT size=2> <DIV>Hello:</DIV> <DIV> </DIV> <DIV>I want to create pseudo ethernet devices to simulate many NICs on </DIV> <DIV>a PC. In Solaris, we can do "ifconfig hme0:1 10.1.1.1 up"</DIV> <DIV>hme0:2 etc to create logival interfaces. I am trying to do a similar thing</DIV> <DIV>on FreeBSD. But after searching the archives, I find that I have to use </DIV> <DIV>tap device. Is there any other way than the approach I am using below.</DIV> <DIV> </DIV> <DIV>I reconfigured the kernel and I have configured the tap device. </DIV> <DIV>ifconfig tap0 shows a MAC address and UP status.</DIV> <DIV>I assigned a IP address also.</DIV> <DIV>I want to make fxp0 and tap0 in one bridge group. </DIV> <DIV>I tried both approaches, using "option BRIDGE"</DIV> <DIV>and ng_bridge example in /usr/share/examples.</DIV> <DIV>Is bridging supposed to work with tap devices?</DIV> <DIV> </DIV> <DIV>I do not see the bridging happen between tap0 and fxp0. </DIV> <DIV>I can see the packet written on tap device when I do a </DIV> <DIV>"hexdump /dev/tap0", but not on fxp0 (using ethereal). </DIV> <DIV>(I am doing a ping out of tap interface).</DIV> <DIV>And when I have bridging turned on using ng_bridge,</DIV> <DIV>if I initiate a PPPoE session, I get socket already connected</DIV> <DIV>warning, but I do not see the PADI packet on the fxp0 interface</DIV> <DIV>at all.</DIV> <DIV> </DIV> <DIV> <DIV>The goal is that I want to use tap0 device in ppp.conf</DIV> <DIV>and initiate a ppp -ddial <service> </DIV> <DIV>The goal is to have 100 tap devices and initiate</DIV> <DIV>pppoe sessions over each of the tap sessions </DIV> <DIV>to simulate a 100 NIC cards with different mac addresses.</DIV></DIV> <DIV> </DIV> <DIV>Thanks</DIV> <DIV>Naga</FONT></DIV></BODY></HTML>help
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