Date: 10 Jun 2002 12:07:20 +0400 From: "Vladimir B. " Grebenschikov <vova@sw.ru> To: Christophe Prevotaux <c.prevotaux@hexanet.fr> Cc: "net@freebsd.org" <net@freebsd.org> Subject: Re: [HELP] IPless VLAN interfaces Message-ID: <1023696440.576.17.camel@vbook.express.ru> In-Reply-To: <20020607172757.4f37c70c.c.prevotaux@hexanet.fr> References: <20020606125126.3d44145c.c.prevotaux@hexanet.fr> <1023373804.470.20.camel@vbook.express.ru> <3CFF7644.F4F5CC1@tel.fer.hr> <1023376206.470.40.camel@vbook.express.ru> <20020607172757.4f37c70c.c.prevotaux@hexanet.fr>
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=F7 Fri, 07.06.2002, =D7 19:27, Christophe Prevotaux =CE=C1=D0=C9=D3=C1=CC: > try to setup this (it won't work) your example does not work As I already said you need to remove interface route here (or apply changes sugessted by Iasen Kostoff <tbyte@otel.net>) > ifconfig fxp0 inet 192.168.1.1/24 up > ifconfig fxp0 inet 192.168.1.1/32 alias=20 route delete 192.168.1.1 > ifconfig fxp0 inet 192.168.1.1/32 alias <--- here it will not work anymor= e With route line it will work > this is the same thing with vlan interfaces under FreeBSD > you can't have more than 1 interface with the same IP/NETMASK >=20 > ifconfig fxp0 inet 192.168.1.1/24 up > ifconfig create vlan0 inet vlan 1 vlandev fxp0 192.168.1.1/32 up route delete 192.168.1.1 > ifconfig create vlan1 inet vlan 2 vlandev fxp0 192.168.1.1/32 up <-- this= does not work before each new vlan initialization you need remove interface route=20 > let's say for the example sake , that you want only to have 1 vlan on the= fxp0 > then you can setup the interface as shown above but you can't route anyth= ing thru it >=20 > route add 192.168.1.2 -interface vlan0=20 >=20 > will not route properly the packets thru vlan0 either because it is a /32= (AFAIK) It is not valid command, see: # route add 1.2.3.4 -interface fxp0 add host 1.2.3.4: gateway fxp0 # netstat -rn | fgrep 1.2.3.4 1.2.3.4 00:00:00:00:00:00 UHLS 0 0 fxp0 # It is invalid route, -interface command add route direct reachable via interface (ppp interface for example) but there we have ethernet with indirect access (you need mac-resolve first) see: # route add -net 1.2.3.4/32 -cloning -iface fxp0 add net 1.2.3.4: gateway fxp0 # netstat -rn | fgrep 1.2.3.4 1.2.3.4/32 link#3 UCS 0 0 fxp0 # So, it is net-route and it will be cloned at request (arp-request will be sent) # ping -c1 1.2.3.4 PING 1.2.3.4 (1.2.3.4): 56 data bytes 64 bytes from 1.2.3.4: icmp_seq=3D0 ttl=3D64 time=3D1.799 ms --- 1.2.3.4 ping statistics --- 1 packets transmitted, 1 packets received, 0% packet loss round-trip min/avg/max/stddev =3D 1.799/1.799/1.799/0.000 ms # netstat -rn | fgrep 1.2.3.4 1.2.3.4 00:01:03:d6:9e:9f UHLW 0 2 fxp0 =20 1192 =3D> 1.2.3.4/32 link#3 UCS 1 0 fxp0 # you see at this stage you have cloning(C) netroute and cloned(W) hostroute to your NIC with 1.2.3.4 If you do not want arp-resolve you can specify MAC-address (link-layer address): # route add -host 4.3.2.1 -link aa:bb:cc:dd:ee:ff -ifp fxp0 add host 4.3.2.1: gateway aa:bb:cc:dd:ee:ff # netstat -rn | fgrep 4.3.2.1 4.3.2.1 aa:bb.cc.dd.ee.ff UGHS 0 0 fxp0 # Ruslan Ermilov <ru@freebsd.org> knows more about routes setup and may be correct me if I am mistaken. > and even if you could do it , then the problem is that you are limited to= having > only one vlan per interface, which sucks BIG TIME. No, see above > under Linux you can have the equivalent of the following setup: >=20 > 192.168.1.2/24 > 192.168.1.3/24 > 192.168.1.4/24 >=20 > are machines behind the switch vlan 1 2 3 ports respectively >=20 > ifconfig fxp0 inet 192.168.1.1/24 up > ifconfig create vlan0 inet vlan 1 vlandev fxp0 192.168.1.1/24 up > ifconfig create vlan1 inet vlan 2 vlandev fxp0 192.168.1.1/24 up > ifconfig create vlan2 inet vlan 3 vlandev fxp0 192.168.1.1/24 up >=20 > etc... etc... >=20 > and then you do the equivalent of=20 >=20 > route add 192.168.1.2 -interface vlan0=20 > route add 192.168.1.3 -interface vlan1=20 > route add 192.168.1.4 -interface vlan2=20 As I said -interface flag is invalid here, Linux or too smart or too stupid here. > and it works just fine, with no problems whatsoever. >=20 > What I want to do is just this but under FreeBSD. >=20 > My question is : How can I do it ?=20 See above =20 PS:=20 As I already said, route manpage need some work, because it is very unclean, may be somebody who knows English well will do it ... --=20 Vladimir B. Grebenschikov vova@sw.ru, SWsoft, Inc. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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