[j-nsp] ldp question

[bert.todts@alcatel.be]

I have following topolgy with ldp enabled without any policys.

juniper1--------------router1---------------juniper2
192.168.99.30         192.168.99.60          192.168.99.20

Juniper sends default his loopbacks with  a labelmap msg but is it
normal that juniper1 sends a label map with FEC 192.168.99.20 back to
router1 after it received  this FEC from router1 ? ( the same counts for
juniper2 )
Router 1 will reject this FEC because of next-hop checks but is this the
normal way.
Do I have to add extra filtering ?

Regards,
Bert


Input label database, 192.168.99.30:0--192.168.99.60:0
  Label     Prefix
 262163     192.168.99.20/32

Output label database, 192.168.99.30:0--192.168.99.60:0
  Label     Prefix
 100021     192.168.99.20/32
           3     192.168.99.30/32

ul 28 09:32:46 LDP rcvd TCP PDU 192.168.99.60 -> 192.168.99.30 (none)
Jul 28 09:32:46 ver 1, pkt len 38, PDU len 34, ID 192.168.99.60:0
Jul 28 09:32:46   Msg LabelMap (0x400), len 24, ID 5
Jul 28 09:32:46     TLV FEC (0x100), len 8
Jul 28 09:32:46       Prefix, family 1, 192.168.99.20/32
Jul 28 09:32:46     TLV Label (0x200), len 4
Jul 28 09:32:46       Label 262163
Jul 28 09:32:46 LDP sent TCP PDU 192.2.1.1 -> 192.2.1.2 (none)
Jul 28 09:32:46 ver 1, pkt len 38, PDU len 34, ID 192.168.99.30:0
Jul 28 09:32:46   Msg LabelMap (0x400), len 24, ID 223298
Jul 28 09:32:46     TLV FEC (0x100), len 8
Jul 28 09:32:46       Prefix, family 1, 192.168.99.20/32
Jul 28 09:32:46     TLV Label (0x200), len 4
Jul 28 09:32:46       Label 100021
Jul 28 09:32:46 LDP sent TCP PDU 192.168.99.30 -> 192.168.99.60 (none)
Jul 28 09:32:46 ver 1, pkt len 38, PDU len 34, ID 192.168.99.30:0
Jul 28 09:32:46   Msg LabelMap (0x400), len 24, ID 223299
Jul 28 09:32:46     TLV FEC (0x100), len 8
Jul 28 09:32:46       Prefix, family 1, 192.168.99.20/32
Jul 28 09:32:46     TLV Label (0x200), len 4
Jul 28 09:32:46       Label 100021