[mpls-linux-general] [mpls example]please help me

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Hello:
        I try to test a example as follows. I want to establish two way =
LSP(from LER1 to LER2 using label 1000, and LER2 to LER1 using label =
1002). When I finish the configuration and using "ping" (from LER1 to =
LER2) to test. I can't see the "ping reply". I guess the LSR's =
configuration has problem. Please tell me my configuration of LSR is =
correct or not? Furthermore tell me how to modify the =
configuration...thanks=20

ps. Thanks for your attention and sorry about my poor English.

                          192.168.101.0/24
                                      |                     =20
                                      |                       =20
                                      |                         =20
 ------eth0   eth0------eth1   v   eth1------ =20
| LER1 |---------| LSR  |-------------| LER2 |
 ------.10   ^   20-----20            30------ =20
               |                                    =20
               |                                    =20
      192.168.100.0/24                       =20
Configuration
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D

LER1
------
mpls nhlfe add key 0 instructions push gen 1000 nexthop eth0 ipv4 =
192.168.100.20
ip route add 192.168.101.30/32 via 192.168.100.20 spec_nh 0x8847 0x2
mpls labelspace add dev eth0 labelspace 0
mpls ilm add label gen 1002 labelspace 0

LSR
-----
mpls nhlfe add key 0 instructions push gen 1000 nexthop eth1 ipv4 =
192.168.101.30
mpls nhlfe add key 0 instructions push gen 1002 nexthop eth0 ipv4 =
192.168.100.10
ip route add 192.168.101.30/32 via 192.168.101.30 spec_nh 0x8847 0x2
ip route add 192.168.100.10/32 via 192.168.100.10 spec_nh 0x8847 0x3
mpls labelspace add dev eth0 labelspace 0
mpls labelspace add dev eth1 labelspace 0
mpls ilm add label gen 1000 labelspace 0
mpls ilm add label gen 1002 labelspace 0=20

LER2
-----
mpls nhlfe add key 0 instructions push gen 1002 nexthop eth1 ipv4 =
192.168.101.20
ip route add 192.168.100.10/32 via 192.168.101.20 spec_nh 0x8847 0x2
mpls labelspace add dev eth0 labelspace 0
mpls ilm add label gen 1000 labelspace 0