[mpls-linux-general] Re:Re: LDP (linux-port)

[Kauder T. <Tho...@ic...>]

Hey Mr Paul,
Thorsten is my first name but never mind :)))

I tried to copy your setup but my system does't support the ip-commands you used.
Didn't work here either.


Using your local loopback device doesn't seem to wise . Try using a dummy.
If your kernel supports loadable modules and dummy network device as such a module try it
with my setup.
I too am using only two computers with only one ethernet device each.
the dummy device is only virtual.

     dummy0 --------- eth0        eth0 --------  dummy0
      <-----| LER 1 |------------------| LER B |------->   
            ---------                  --------

First I set up the Devices.

On Ler 1:
	
	ifconfig eth0 10.0.0.1 netmask 255.255.255.0 broadcast 10.0.0.255 up
	ifconfig dummy0 1.2.3.4

On Ler 2:
	
	ifconfig eth0 10.0.0.2 netmask 255.255.255.0 broadcast 10.0.0.255 up
	ifconfig dummy0 2.3.4.5

Second I add routes to virtual networks.

On Ler 1:
	route add -net 78.1.1.0/24 gw 1.2.3.4
	route add -net 78.1.2.0/24 gw 1.2.3.4

	route add -net 79.1.1.0/24 gw 10.0.0.2
	route add -net 79.1.2.0/24 gw 10.0.0.2

On Ler 2:
	route add -net 79.1.1.0/24 gw 2.3.4.5
	route add -net 79.1.2.0/24 gw 2.3.4.5

	route add -net 78.1.1.0/24 gw 10.0.0.1
	route add -net 78.1.2.0/24 gw 10.0.0.1

Then I make shure the right labelspaces are associated:

on Ler 1 and Ler 2:

	cd {your mpls dir}/utils
	./mplsadm -L eth0:0
you can check if it worked in /proc/net/mpls_labelspace

Then start Ldp on both LERs:

On LER 1:

	./ldp_linux
	add global 10.0.0.1
	set trace 0xFFFFFFFF
	add interface eth0

On LER 2:

	./ldp_linux
	add global 10.0.0.2
	set trace 0xFFFFFFFF
	add interface eth0

Now it should work !!!!

My /proc/net/mpls_* files after that are listed below:

mpls_in:
40004000 gen 16 0 POP DLV
40004400 gen 17 0 POP DLV
40004800 gen 18 0 POP DLV
40004c00 gen 19 0 POP DLV
40005000 gen 20 0 POP DLV
40005400 gen 21 0 POP DLV  

mpls_fec:
40004c02 78.1.1.0/24
40005002 78.1.2.0/24   

mpls_labelspace:
lo      0
eth0    0 

mpls_out:
40004c02 PUSH(gen 19) SET(eth0)
40005002 PUSH(gen 20) SET(eth0)  

mpls_tunnel is of cource empty !!

if that doesn't help you I may ask if you can establish LSPs manually
try the README.example from the utils dir.

Hope it works now
Thorsten