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Example of BGP update message sent from Junos for a VPLS circuit
https://forum.ivorde.com/example-of-bgp-update-message-sent-from-junos-for-a-vpls-circuit-t14731.html
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Author:  mandrei99 [ Fri Jul 19, 2013 9:24 am ]
Post subject:  Example of BGP update message sent from Junos for a VPLS circuit

Example of BGP update message sent from Junos for a VPLS circuit

Note the use of the BGP extended target communities

Code:
Border Gateway Protocol - UPDATE Message
    Marker: ffffffffffffffffffffffffffffffff
    Length: 88
    Type: UPDATE Message (2)
    Unfeasible routes length: 0 bytes
    Total path attribute length: 65 bytes
    Path attributes
        ORIGIN: IGP (4 bytes)
            Flags: 0x40 (Well-known, Transitive, Complete)
            Type code: ORIGIN (1)
            Length: 1 byte
            Origin: IGP (0)
        AS_PATH: empty (3 bytes)
            Flags: 0x40 (Well-known, Transitive, Complete)
            Type code: AS_PATH (2)
            Length: 0 bytes
            AS path: empty
        LOCAL_PREF: 100 (7 bytes)
            Flags: 0x40 (Well-known, Transitive, Complete)
            Type code: LOCAL_PREF (5)
            Length: 4 bytes
            Local preference: 100
        EXTENDED_COMMUNITIES: (19 bytes)
            Flags: 0xc0 (Optional, Transitive, Complete)
            Type code: EXTENDED_COMMUNITIES (16)
            Length: 16 bytes
            Carried Extended communities
                two-octet AS specific Route Target: 64512:10
                Layer 2 Information: Unknown, Control Flags: none, MTU: 0 bytes
                    Encapsulation: Unknown
                    Control Flags: Control Word not required, Sequenced delivery not required
                    MTU: 0 bytes
        MP_REACH_NLRI (32 bytes)
            Flags: 0x90 (Optional, Non-transitive, Complete, Extended Length)
            Type code: MP_REACH_NLRI (14)
            Length: 28 bytes
            Address family: Layer-2 VPN (25)
            Subsequent address family identifier: VPLS (65)
            Next hop network address (4 bytes)
            Subnetwork points of attachment: 0
            Network layer reachability information (19 bytes)
                RD: 172.16.2.2:10, CE-ID: 11, Label-Block Offset: 9, Label-Block Size: 8, Label Base 262145 (bottom)

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