Date: Tue, 13 Jan 2009 16:35:01 +0100 (CET) From: "JASSAL Aman" <aman.jassal@esigetel.fr> To: "Eitan Shefi" <eitans@mellanox.co.il> Cc: freebsd-net@freebsd.org Subject: Re: When configuring 2 VLANs to be on the same subnet, only one works. Message-ID: <52831.193.49.124.107.1231860901.squirrel@webmail.esigetel.fr> In-Reply-To: <B8C6BEB3-C1E4-49B3-A94C-EF3C633DE641@moneybookers.com> References: <5D49E7A8952DC44FB38C38FA0D758EAD0173629B@mtlexch01.mtl.com> <B8C6BEB3-C1E4-49B3-A94C-EF3C633DE641@moneybookers.com>
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Hello Eitan, I am no expert but I believe Stefan is right, your having a netmask of 255.0.0.0 does look strange. The way I see it, I think you are trying to configure 2 IP addresses belonging to the same subnet (91.0.0.0/8) on your interface, but only the first address is taken into account (91.154.12.5 on sw259 and 91.154.12.6 on sw260). Hence ping 91.154.12.6 from sw259 fails. Setting a netmask of 255.255.0.0 as Stefan suggested should solve your problem. Kind regards, Aman Jassal Le Mar 13 janvier 2009 15:03, Stefan Lambrev a écrit : > Greetings, > > > For me your configuration looks invalid. Try with netmask 255.255.0.0 > The question here is why freebsd allow this. > > > On Jan 13, 2009, at 3:09 PM, Eitan Shefi wrote: > > >> I'm testing a NIC driver. >> I use 2 directly connected FreeBSD-7.0 hosts. >> When I create 2 VLANs for the same interface (mtnic0), on each host, >> and configure the VLANs on each host to be on the same subnet: ping works >> only to one of the VLANs. >> >> I run: >> On sw259: >> /sbin/ifconfig vlan1 create vlan 1 vlandev mtnic0 >> /sbin/ifconfig vlan2 create vlan 2 vlandev mtnic0 >> /sbin/ifconfig vlan1 91.154.12.5 netmask 255.0.0.0 >> /sbin/ifconfig vlan2 91.155.12.5 netmask 255.0.0.0 >> >> >> On sw260: >> /sbin/ifconfig vlan1 create vlan 1 vlandev mtnic0 >> /sbin/ifconfig vlan2 create vlan 2 vlandev mtnic0 >> /sbin/ifconfig vlan1 91.154.12.6 netmask 255.0.0.0 >> /sbin/ifconfig vlan2 91.155.12.6 netmask 255.0.0.0 >> >> >> Now on sw259 run: >> ping 91.154.12.6 - works. ping 91.155.12.6 - does not work. >> >> I saw the same behavior also when running via a different NIC. >> >> >> >> Is this expected ? >> >> >> >> Thanks, >> Eitan. >> _______________________________________________ >> freebsd-net@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-net >> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" >> > > -- > Best Wishes, > Stefan Lambrev > ICQ# 24134177 > > > > > > > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > >
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