Re: [mpls-linux-devel] LDP problems

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I am looking into this issue.  I will post a instrumented FC5 quagga-mpls
RPM that will hopefully provide more details about what is happening.
I will be building the RPM this evening and posting a URL to pick it
up from shortly thereafter.

On Mon, Mar 19, 2007 at 01:03:04PM +0100, Marco Schmidt wrote:
> Here is what I got so far...
>=20
> I'm experiencing the same problems. Some connections are labeled, most
> of them are not - that differs from friday, where only one PC didn't
> work properly.
> In the non-working-case, LDPd finds the pending NHLFEs, but does nothing =
more.
>=20
> ...
> 2007/03/19 12:18:14 LDP: found pending NHLFE: 0x8a856d8
> 2007/03/19 12:18:14 LDP: found pending NHLFE: 0x8a869a0
> 2007/03/19 12:18:14 LDP: found pending NHLFE: 0x8a87c68
> 2007/03/19 12:18:14 ZEBRA: zebra message comes from socket [17]
> 2007/03/19 12:18:14 ZEBRA: zebra message received [ZEBRA_MPLS_FTN_ADD] 11
> 2007/03/19 12:18:14 ZEBRA: zebra message comes from socket [17]
> 2007/03/19 12:18:14 ZEBRA: zebra message received [ZEBRA_MPLS_FTN_ADD] 11
> 2007/03/19 12:18:14 ZEBRA: zebra message comes from socket [17]
> 2007/03/19 12:18:14 ZEBRA: zebra message received [ZEBRA_MPLS_FTN_ADD] 11
> whole log can be found here:
> http://www-user.tu-chemnitz.de/~smarco/MPLS/E2_no_label_binding121814.log
>=20
>=20
> Different reaction where the binding works properly:
>=20
> ...
> >2007/03/19 12:07:44 LDP: found pending NHLFE: 0x9ccb2e8
> 2007/03/19 12:07:44 ZEBRA: netlink_parse_info: mpls-netlink-listen type (=
29), seq=3D1, pid=3D4294963188
> 2007/03/19 12:07:44 ZEBRA: netlink_parse_info: mpls-netlink-nhlfe packet =
comes from mpls-netlink-listen
> 2007/03/19 12:07:44 ZEBRA: zebra message comes from socket [18]
> 2007/03/19 12:07:44 ZEBRA: zebra message received [ZEBRA_MPLS_FTN_ADD] 11
> 2007/03/19 12:07:44 ZEBRA: netlink_route_multipath() (single hop): RTM_DE=
LROUTE 172.16.30.0/24, type IPv4=20
> 2007/03/19 12:07:44 ZEBRA: netlink_route_multipath() (single hop): nextho=
p via 10.0.5.1 if 2
> 2007/03/19 12:07:44 ZEBRA: netlink_talk: netlink-cmd type RTM_DELROUTE(25=
), seq=3D7
> 2007/03/19 12:07:44 ZEBRA: netlink_parse_info: netlink-cmd ACK: type=3DRT=
M_DELROUTE(25), seq=3D7, pid=3D0
> 2007/03/19 12:07:44 ZEBRA: netlink_parse_info: netlink-listen type RTM_DE=
LROUTE(25), seq=3D7, pid=3D4294963190
> 2007/03/19 12:07:44 ZEBRA: netlink_parse_info: netlink-cmd packet comes f=
rom netlink-listen
> 2007/03/19 12:07:44 ZEBRA: rib_process: Adding route, select 0x9763798
> 2007/03/19 12:07:44 ZEBRA: netlink_route_multipath() (single hop): RTM_NE=
WROUTE 172.16.30.0/24, type IPv4=20
> 2007/03/19 12:07:44 ZEBRA: netlink_route_multipath() (single hop): nextho=
p via 10.0.5.1 if 2
> 2007/03/19 12:07:44 ZEBRA: netlink_route_multipath() (single hop): MPLS i=
nfo 00000009
> 2007/03/19 12:07:44 ZEBRA: netlink_talk: netlink-cmd type RTM_NEWROUTE(24=
), seq=3D8
> 2007/03/19 12:07:44 ZEBRA: netlink_parse_info: netlink-cmd ACK: type=3DRT=
M_NEWROUTE(24), seq=3D8, pid=3D0
> >2007/03/19 12:07:44 LDP: route 172.16.30.0/24
> >2007/03/19 12:07:44 LDP:        num nexthop 0
> >2007/03/19 12:07:44 LDP:        nexthop 10.0.5.1
> >2007/03/19 12:07:44 LDP:        add
> 2007/03/19 12:07:44 ZEBRA: netlink_parse_info: netlink-listen type RTM_NE=
WROUTE(24), seq=3D8, pid=3D4294963190
> 2007/03/19 12:07:44 ZEBRA: netlink_parse_info: netlink-cmd packet comes f=
rom netlink-listen
>=20
> Here, the label binding appears unter "ip route show" command.
> whole log: http://www-user.tu-chemnitz.de/~smarco/MPLS/E3_120744_label_bi=
nding_and_zebra_crash121437.log
>=20
> The marked operations never happen at the non-working links.
>=20
> LDPd sometimes closes because of I/O errors, but there are no messages
> in the logfile. Zebra crashes when recieving a zebra_mpls_xc_add
> message (can be found two times in the above logfile)
>=20
> 2007/03/19 12:14:37 ZEBRA: zebra message received [ZEBRA_MPLS_XC_ADD] 11
> ZEBRA: Received signal 11 at 1174302877 (si_addr 0xe, PC 0x80537b1); abor=
ting...
> Program counter: /usr/sbin/zebra[0x80537b1]
>=20
> My conf-files can also be found in die MPLS directory http://www-user.tu-=
chemnitz.de/~smarco/MPLS/
>=20
> Regards,
> Marco
>=20
>=20
>=20
> > Hello everybody:
>=20
> > I've migrated my PCs from FC4 to FC5 with all the RPMs for the
> > 1.955 version. The problem must be that I'm forgetting something or
> > doing something wrong cause I've notice that Julien or Marco were at
> > the same situacion and they both are able to run LDP.
>=20
> > This is what I do, it's a simple scenario with two LSRs:
>=20
> > 1. First of all I load "mpls4" and activate ip forwarding.
> > 2. I launch the daemonds by "zebra/ospfd/ldpd -d -A 127.0.0.1".
> >    Without specifying the config files (though I tried it also with the=
 .conf files and even
> >    starting them as services ("service ... start")).
> > 3. Then I entered vtysh to type by here ALL the config.
> >    -First, the OSPF networks: router ospf, network ... area 0.
> >    -I wait to the new routes to be discovered and then I configured ldp.
> >    -mpls ldp, and in the corresponding interface of each LSR to the MPL=
S link:
> >     mpls ip and mpls labelspace 0.
>=20
> > The OSPF routes are discovered correctly, and the NHLFE and ILM
> > entries, created properly, but I'm not able to send labelled packets
> > through the mpls link I'm trying to set up.
>=20
> > If someone working with FC5 and LDP running could tell me his method sh=
ould be very useful.
>=20
> > Thanks in advance,
> > Gonzalo.
>=20
>=20
>=20
>=20
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>=20
>=20
>=20
>=20
>=20
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--=20
James R. Leu
jl...@mi...