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IPv6 Juniper Dynamic LDP Neighbor

Posted: Sun Dec 10, 2023 1:06 am
by danmikrotik
Anyone out there been successful in getting dynamic LDP over IPv6 working between Mikrotik and Juniper?

Juniper shows neighbor but nothing on Mikrotik side. I see old posts with similar issues, just wondering if this is a known issue or if there has been success without defining static neighbors?

Re: IPv6 Juniper Dynamic LDP Neighbor

Posted: Wed Dec 20, 2023 4:46 am
by danmikrotik
Static LDP neighbor works fine.

The only difference between the Mikrotik and Juniper HELLO is Juniper is including an extra parameter: 'Configuration Sequence Number'.

Capture of Juniper HELLO from Mikrotik:
Label Distribution Protocol
    Version: 1
    PDU Length: 50
    LSR ID: x.x.x.x
    Label Space ID: 0
    Hello Message
        0... .... = U bit: Unknown bit not set
        Message Type: Hello Message (0x100)
        Message Length: 40
        Message ID: 0x00000050
        Common Hello Parameters
            00.. .... = TLV Unknown bits: Known TLV, do not Forward (0x0)
            TLV Type: Common Hello Parameters (0x400)
            TLV Length: 4
            Hold Time: 15
            0... .... .... .... = Targeted Hello: Link Hello
            .0.. .... .... .... = Hello Requested: Source does not request periodic hellos
            ..0. .... .... .... = GTSM Flag: Not set
            ...0 0000 0000 0000 = Reserved: 0x0000
        IPv6 Transport Address
            00.. .... = TLV Unknown bits: Known TLV, do not Forward (0x0)
            TLV Type: IPv6 Transport Address (0x403)
            TLV Length: 16
            IPv6 Transport Address: xx:xx:xx:xx::xx
        Configuration Sequence Number
            00.. .... = TLV Unknown bits: Known TLV, do not Forward (0x0)
            TLV Type: Configuration Sequence Number (0x402)
            TLV Length: 4
            Configuration Sequence Number: 30