[mpls-linux-general] Problems pinging vom Ingress to Egress

[Josef P. <jo...@pe...>]

Hi to all,

I've tried jLeu's uml testbed and wanted to come into it with the first
simple example of an mpls LSP.

UML1:eth1 ----- eth1:UML2
ip: 11.0.1.1	ip: 11.0.1.2

before entering the MPLS Commands the ipv4 ping from UML1 to UML2 and vice
versa works normally.

If I setup the LSP only in one Direction for example from uml1 to uml2 (I
don't enter the ip route add . command on uml2 ) everthing works fine.
But I also want to have the ping replies encapsulated..

After set up the route to the back lsp in uml2  I can't ping the other uml
and vice versa...


The following comands I've entered

UML1:
mplsadm2 -A -O 0;
mplsadm2 -O 0x2 -o push:gen:16:set:eth1:ipv4:11.0.1.2
ip route add 11.0.1.2/32 via 11.0.1.2 spec_nh 0x8847 0x2
mplsadm2 -A -I gen:17:0
mplsadm2 -L eth1:0



UML2:
mplsadm2 -A -O 0
mplsadm2 -O 0x2 -o push:gen:17:set:eth1:ipv4:11.0.1.1
ip route add 11.0.1.1/32 via 11.0.1.1 spec_nh 0x8847 0x2
mplsadm2 -A -I gen:16:0;
mplsadm2 -L eth1:0

-----------
ip route show UML1:
11.0.1.2 via 11.0.1.2 dev eth1 spec_nh 0x8847 0x00000002 
11.0.1.0/24 dev eth1  proto kernel  scope link  src 11.0.1.1 
10.0.0.0/8 dev eth0  proto kernel  scope link  src 10.14.2.105 


ip route show UML2:
11.0.1.1 via 11.0.1.1 dev eth1 spec_nh 0x8847 0x00000002 
11.0.2.0/24 dev eth2  proto kernel  scope link  src 11.0.2.2 
11.0.3.0/24 dev eth3  proto kernel  scope link  src 11.0.3.2 
11.0.1.0/24 dev eth1  proto kernel  scope link  src 11.0.1.2 
10.0.0.0/8 dev eth0  proto kernel  scope link  src 10.14.2.205 


Perhaps anyone can find out what I'm doing wrong?

thx, in advance
josef

Josef Perlinger
Student FH-Sbg/TKS 2000
Tel.: +43 664 4024906
ICQ: 166227595
Email: jo...@pe...