Thread: [mpls-linux-general] ldp

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Hi,

I would like to ask your opinion with regard to some
error messages that I'm getting while running
ldp-linux from the ldp-portable package.

- I'm using the last version of the ldp-portable distro
  (copied through CVS from sf.net);
- I've compiled ldp-linux using :
  CC = gcc # not kgcc, where gcc is version 2.91.66
  Also added -DMPLS_LINUX cflag to  Makefile,
  ( /usr/src/ldp-portable/Makefile );
  I had to remove -Werror flag in order to bypass a
  warning related to some function declarations
  from linux-port/ldp_mpls_impl.c ;
- kernel version is 2.4.5 ;
- kernel was compiled after patching with mpls-linux-0.993
 hostname$ dmesg
  -- snip --
  Initializing RT netlink socket
  ...
  MPLS version 0.993 06/05/2001 jl...@mi...
  MPLS Tunnel interface
  -- snip --

I used a basic test config:

  [ machine A running ldp_linux ] ------ [ machine B running ldp_linux ]

After I start ldp_linux and configure it with "add global" & "add interface",
i'm getting the following error messages:
-- snip --
UDP_DATA
recvfrom: Invalid argument
 [ machine A running ldp_linux ] ------ [ machine B running ldp_linux ]

After I start ldp_linux and add global IP & add interface,

I'm getting the following error messages:
-- snip --
UDP_DATA
recvfrom: Invalid argument
Before header decode: size = 0
UDP_DATA
recvfrom: Invalid argument
Before header decode: size = 0
-- snip --

Then, I set trace 0xffffffff, and get the following :
-- snip --

OUT: Failed while decoding HEADER:-2
OUT: Hello Send fired: entity(4)
OUT: Hello Send: entity(4)
OUT: LPD Header : protocolVersion = 1
OUT:    pduLength = 30
OUT:    lsrAddress = 88c9944c
OUT:    labelSpace = 0
OUT: HELLO MSG ***START***:
OUT:    baseMsg : uBit = 0
OUT:              msgType = 100
OUT:              msgLength = 20
OUT:              msgId = 1
OUT:     chpTlv:
OUT:     Tlv:
OUT:     BaseTlv: uBit = 0
OUT:              fBit = 0
OUT:              type = 400
OUT:              length = 4
OUT:     chpTlv data: holdTime = 15
OUT:     chpTlv Flags:  target = 0
OUT:                    request = 0
OUT:                    res = 0
OUT:    Hello msg does not have TrAdr TLV
OUT:     csnTlv:
OUT:     Tlv:
OUT:     BaseTlv: uBit = 0
OUT:              fBit = 0
OUT:              type = 402
OUT:              length = 4
OUT:     csnTlv data: value = 6
OUT: HELLO MSG ***END***:

-- snip --

I've got the same errors when I used the sample config provided
with ldp-portable ;

Any suggestion will be greatly appreciated,
Thanks and Cheers,

-istvan
ps: I've checked with tcpdump and both machines running ldp_linux
    send out hello discovery msgs on mcasts 224.0.0.2, which
    looks ok to me.