On Mon, Jun 07, 2010 at 06:19:10PM +0200, Rolf Sommerhalder wrote: > Thanks Claudio for your speedy reply. > > > Have a look at the route -n show -mpls output and check the input counter > for label 20. > > It happily counts and confirms what tcpdump shows on the ingress interface: > > [r...@p2:root]# route -n show -mpls > Routing tables > > MPLS: > In label Out label Op Gateway Flags Refs Use > Mtu Prio Interface > 3 - LOCAL 127.0.0.1 UGT 0 0 > 33200 56 lo0 > 16 - LOCAL 10.7.0.254 UGT 0 0 > - 56 udav0 > 17 - POP 1.1.2.1 UGT 0 0 > - 56 vr2 > 18 - POP 1.1.2.1 UGT 0 5 > - 56 vr2 > 19 19 SWAP 1.1.2.1 UGT 0 0 > - 56 vr2 > 20 - POP 2.2.1.2 UGT 0 7526 > - 56 vr0 <== > 21 - POP 2.2.1.2 UGT 0 0 > - 56 vr0 > 22 - POP 2.2.1.2 UGT 0 0 > - 56 vr0 > 23 23 SWAP 1.1.2.1 UGT 0 0 > - 56 vr2 > 24 - LOCAL 7.0.0.2 UGT 0 1 > 33200 56 lo1 > 25 17 SWAP 1.2.3.3 UGT 0 0 > - 56 vr1 > 26 26 SWAP 1.1.2.1 UGT 0 0 > - 56 vr2 > 27 26 SWAP 2.2.1.2 UGT 0 0 > - 56 vr0 > > Also, I have re-checked the counters of all other routes as well as > the traffic out of all other interface on this P router, but the > packets do not appear on a "wrong" interface. >
Yeah, the packets are dropped in the POP case of mpls_input.c that's how far I got until now. I started with a fix but my magic is not strong enough for now. Need to add some printfs to figure out where the packets are dropped now. > > Setup looks fine. I use OSPF as IGP but I now Michele is using RIP in his > setup. > > For a cross-check, I will move from RIP to OSPF and report again if it > made any difference. > Does not make a difference I have the same issue. > > Please consider using IP blocks that are available for testing and not > publicly assigned ones. > > But it so much more convenient with short addresses which reflect the > topology, although there is actually named running as well. As a > precaution against leakage into the wild Internet, I had added those > public ranges temporarily to the RFC1918 egress filter on my pf lab > firewall :-) > I just brought it up because of the bad traffic flowing through the newly assigned 1/8. I use 10/8 as my playground and 192.168/16 for the VRFs. Works nicely. -- :wq Claudio
