[j-nsp] Olive and PING MPLS

[Bit Gossip]

Experts,
in the simple Olive 10.2R1.8 setup described below 'ping mpls' fails
from R1 to R6; by monitoring traffic on R3 I see that R3 receives the
ping mpls, it replies but it doesn't forward it to R6.
Notice that if I replace Olive R6 with a real M7i it works.
Any idea why the LSP-PING stops at R3? and how to fix it?
Thanks,
Luca.


R1(em6)-----(em0)R3(em3)------(em6)R6

R1-lo0.0=10.0.6.1
R3-lo0.0=10.0.3.3
R6-lo0.0=10.0.9.6

Plain ISIS, LDP.

bit at r1> show route table inet.3 

inet.3: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

10.0.3.3/32        *[LDP/9] 00:00:03, metric 1
                    > to 10.0.4.13 via em6.0
10.0.6.4/32        *[LDP/9] 00:00:03, metric 1
                    > to 10.0.4.13 via em6.0, Push 299904
10.0.9.6/32        *[LDP/9] 00:00:03, metric 1
                    > to 10.0.4.13 via em6.0, Push 299856

bit at r1> ping mpls ldp count 1 10.0.9.6/32 detail    
Request for seq 1, to interface 67, label 299856, packet size 80 
Reply for seq 1, return code: Label switched, time: -832.238 ms
        Local transmit time: 2010-08-15 19:43:16 CEST 381.198 ms
        Remote receive time: 2010-08-15 19:43:15 CEST 548.960 ms

--- lsping statistics ---
1 packets transmitted, 0 packets received, 100% packet loss
1 packets received with error status, not counted as received.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

bit at r1> ping mpls ldp count 1 10.0.9.6/32 detail    
Request for seq 1, to interface 67, label 299856, packet size 80 
Reply for seq 1, return code: Label switched, time: -831.534 ms
        Local transmit time: 2010-08-15 19:52:01 CEST 802.255 ms
        Remote receive time: 2010-08-15 19:52:00 CEST 970.721 ms

        Juniper PCAP Flags [Ext, In], PCAP Extension(s) total length 16
          Device Media Type Extension TLV #3, length 1, value: Ethernet
(1)
          Logical Interface Encapsulation Extension TLV #6, length 1,
value: Ethernet (14)
          Device Interface Index Extension TLV #1, length 2, value: 8
          Logical Interface Index Extension TLV #4, length 4, value: 64
        -----original packet-----
        0:1a:4b:91:1:6 > 0:1a:4b:91:3:0, ethertype MPLS unicast
(0x8847), length 98: MPLS (label 299856, exp 7, [S], ttl 255)
        (tos 0x0, ttl   1, id 15341, offset 0, flags [none], proto: UDP
(17), length: 80, optlength: 4 ( RA )) 10.0.6.1.52599 > 127.0.0.1.3503:
[udp sum ok]
        LSP-PINGv1, msg-type: MPLS Echo Request (1), length: 48
          reply-mode: Reply via an IPv4/IPv6 UDP packet (2)
          Return Code: No return code or return code contained in the
Error Code TLV (0)
          Return Subcode: (0)
          Sender Handle: 0x00000000, Sequence: 1
          Sender Timestamp: -10:-37:-1.313816 Receiver Timestamp: no
timestamp
          Target FEC Stack TLV (1), length: 12
            LDP IPv4 prefix subTLV (1), length: 5
              10.0.9.6/32
              0x0000: 0a00 0906 20
            0x0000: 0001 0005 0a00 0906 2000 0000

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


bit at r3> monitor traffic interface em0 no-resolve extensive matching "udp
port 3305" count 1
Address resolution is OFF.
Listening on em0, capture size 1514 bytes

^C
33 packets received by filter
0 packets dropped by kernel

ltosolini at r3> monitor traffic interface em0 no-resolve extensive
matching "udp port 3503" count 1
Address resolution is OFF.
Listening on em0, capture size 1514 bytes

19:52:00.970838 Out
        Juniper PCAP Flags [Ext], PCAP Extension(s) total length 16
          Device Media Type Extension TLV #3, length 1, value: Ethernet
(1)
          Logical Interface Encapsulation Extension TLV #6, length 1,
value: Ethernet (14)
          Device Interface Index Extension TLV #1, length 2, value: 8
          Logical Interface Index Extension TLV #4, length 4, value: 64
        -----original packet-----
        0:1a:4b:91:3:0 > 0:1a:4b:91:1:6, ethertype IPv4 (0x0800), length
74: (tos 0xc0, ttl  64, id 20387, offset 0, flags [none], proto: UDP
(17), length: 60) 10.0.3.3.3503 > 10.0.6.1.50586: [udp sum ok]
        LSP-PINGv1, msg-type: MPLS Echo Reply (2), length: 32
          reply-mode: Reply via an IPv4/IPv6 UDP packet (2)
          Return Code: Label switched at stack-depth 1 (8)
          Return Subcode: (1)
          Sender Handle: 0x00000000, Sequence: 1
          Sender Timestamp: -10:-36:-15.802255 Receiver Timestamp:
-10:-36:-16.970721