[j-nsp] JunOS violating draft-katz-ward-bfd-v4v6-1hop for BFD?

[Josef Buchsteiner]

I will contact development to get this corrected

19:19:50.416721 Out IP (tos 0xc0, ttl 255, id 1770, offset 0, flags [none], length: 52) 11.12.12.2.3784 > 11.12.12.1.3784: BFDv0, length: 24
        Control, Flags: [I Hear You], Diagnostic: Control Detection Time Expired (0x01)
        Detection Timer Multiplier: 3 (300 ms Detection time), BFD Length: 24
        My Discriminator: 0x00000001, Your Discriminator: 0x00000002
          Desired min Tx Interval:     100 ms
          Required min Rx Interval:    100 ms
          Required min Echo Interval:    0 ms
19:19:50.462504  In IP (tos 0xc0, ttl 255, id 14456, offset 0, flags [none], length: 52) 11.12.12.1.3784 > 11.12.12.2.3784: BFDv0, length: 24
        Control, Flags: [I Hear You], Diagnostic: No Diagnostic (0x00)
        Detection Timer Multiplier: 3 (300 ms Detection time), BFD Length: 24
        My Discriminator: 0x00000002, Your Discriminator: 0x00000001
          Desired min Tx Interval:     100 ms
          Required min Rx Interval:    100 ms
          Required min Echo Interval:    0 ms

          
thanks
Josef

Saturday, April 17, 2004, 6:32:47 PM, you wrote:

DR> Hi,

DR> draft-katz-ward-bfd-v4v6-1hop-00.txt says:

DR> 4. Encapsulation

DR> 4.1. BFD for IPv4

DR>    In the case of IPv4, BFD Control packets MUST be transmitted in UDP
DR>    packets with destination port 3784, within an IPv4 packet.  The
DR>    source port MUST be in the range 49152 through 65535. [...]


DR> Yet, I'm seing that BFD between two Junipers use 3784 as source port,
DR> not something in range 49152-65535. Didn't check for 3785:3785 yet.


DR> Best regards,
DR> Daniel
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