Re: [mpls-linux-general] Mpls installation problems with the new version.

[Oliver H. <ho...@tm...>]

Am Mit, 2002-07-31 um 17.53 schrieb James R. Leu:
> http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/mpls-linux/mpls-linux/NOTE=
?rev=3D1.5.2.2&only_with_tag=3Dmpls-linux_1_152&content-type=3Dtext/vnd.vie=
wcvs-markup
ok. That means, that MPLS is working well? Nice! :]
But why I am not able to let a traceroute running?
Ping works well, but traceroute has not output? (see mailing below)

>=20
> On Wed, Jul 31, 2002 at 04:35:47PM +0200, Oliver Horvath wrote:
> > Hi,
> >=20
> > I try to install a mpls network, in a first step with two PCs.
> > I use kernel 2.4.18 and the mpls version 1.152, July 27, 2002.
> >=20
> > PC1: obiwan (192.168.2.1)  <---> PC2: amidala (192.168.2.2)
> >=20
> > Each PC has a network card with 4 slots (to build up a bigger network
> > later).
> >=20
> > --- config section start ---
> >=20
> > Configuration of PC1:
> > Label 21 (push and send) and label 22 (receive and push)=20
> >=20
> > [root@obiwan root]# cat /proc/net/mpls_labelspace=20
> > eth1	0	12
> > [root@obiwan root]# cat /proc/net/mpls_in        =20
> > 0x40005400 189/21369/0 gen 21 0 1 POP PEEK=20
> > [root@obiwan root]# cat /proc/net/mpls_out=20
> > 0x00000004 666/51158/0 2 PUSH(gen 22) SET(eth1,192.168.2.2)=20
> > [root@obiwan root]# /mnt/image/pkg/ip route add 192.168.2.2/32 via
> > 192.168.2.2 lsp 0x00000004
> > [root@obiwan root]# netstat -rn           =20
> > Kernel IP Routentabelle
> > Ziel         Router       Genmask      Flags   MSS Fenster irtt Iface
> > 192.168.2.2   192.168.2.2   255.255.255.255 UGH     40 0    0 eth1
> >=20
> >=20
> > Configuration of PC2:
> > [root@amidala root]# cat /proc/net/mpls_labelspace=20
> > eth0	0	11
> > [root@amidala root]# cat /proc/net/mpls_in        =20
> > 0x40005800 738/59582/0 gen 22 0 1 POP PEEK=20
> > [root@amidala root]# cat /proc/net/mpls_out=20
> > 0x00000012 238/25613/0 2 PUSH(gen 21) SET(eth0,192.168.2.1)=20
> > [root@amidala root]# /mnt/image/pkg/ip route add 192.168.2.1/32 via
> > 192.168.2.1 lsp 0x00000012
> > [root@amidala root]# netstat -rn
> > Kernel IP Routentabelle
> > Ziel        Router        Genmask        Flags   MSS Fenster irtt Iface
> > 192.168.2.1    192.168.2.1    255.255.255.255 UGH     40 0      0 eth0
> >=20
> > --- config section stop ---
> >=20
> > Now I tried to see, that I am really using MPLS. For that reason I have
> > installed ethereal.
> >=20
> > Now I have the following problems:
> >=20
> > If I ping obiwan I get the following output of tethereal:
> >=20
> > 2615.091161 02:01:08:00:36:94 -> c0:a8:02:02:c0:a8 0xb909 Ethernet II
> > 2615.091215   obiwan-2-1 -> amidala      ICMP Echo (ping) reply
> >=20
> > What the hell is 02:01:08:00:36:94? It looks like a MAC address, but we
> > have no cards with these address.
> > The answer of obiwan looks good. I had a look on it with ethereal and i=
t
> > looks like a "normal" mpls header.
> > But the ping request is bad. With ethereal I saw, that there are 6
> > MPLS-Headers are included. But why? I appended the output of ethereal.
> >=20
> > The second thing is, that I am able to ping obiwan, but a traceroute to
> > the same IP (only one hop of course) generates no output. I have to
> > press cntl-c.
> > [root@amidala root]# traceroute 192.168.2.1
> > traceroute to 192.168.2.1 (192.168.2.1), 30 hops max, 38 byte packets
> >=20
> > [root@amidala root]#
> >=20
> > So whats wrong?
> > Maybe I have patched the wrong version of iproute2?
> >=20
> >=20
> > I hope someone can help me.
> > Thanks.
> >=20
> > Oliver
> >=20
>=20
>=20
>=20
> --=20
> James R. Leu
>=20
>=20
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>=20
--=20
Dipl.-Inf. Oliver Horvath          Johann Wolfgang Goethe-Universit=E4t
Tel: 069/798-28358 (Fax: 23340)   Institut f=FCr Informatik - Telematik