「BGP」- 扩展团体属性（Extended Community, EXT-COMM）

Border Gateway Protocol - UPDATE Message
    Marker: ffffffffffffffffffffffffffffffff
    Length: 115
    Type: UPDATE Message (2)
    Withdrawn Routes Length: 0
    Total Path Attribute Length: 92
    Path attributes
        ...
        Path Attribute - EXTENDED_COMMUNITIES
            Flags: 0xc0, Optional, Transitive, Complete
                1... .... = Optional: Set
                .1.. .... = Transitive: Set
                ..0. .... = Partial: Not set
                ...0 .... = Extended-Length: Not set
                .... 0000 = Unused: 0x0
            Type Code: EXTENDED_COMMUNITIES (16)
            Length: 32
            Carried extended communities: (4 communities)
                Route Target: 100:100 [Transitive 2-Octet AS-Specific]
                    Type: Transitive 2-Octet AS-Specific (0x00)
                        0... .... = IANA Authority: Allocated on Standard Action, Early Allocation or Experimental Basis
                        .0.. .... = Transitive across AS: Transitive
                    Subtype (AS2): Route Target (0x02)
                    2-Octet AS: 100
                    4-Octet AN: 100
                OSPF Domain Identifier: 0:0 [Transitive 2-Octet AS-Specific]
                    Type: Transitive 2-Octet AS-Specific (0x00)
                        0... .... = IANA Authority: Allocated on Standard Action, Early Allocation or Experimental Basis
                        .0.. .... = Transitive across AS: Transitive
                    Subtype (AS2): OSPF Domain Identifier (0x05)
                    2-Octet AS: 0
                    4-Octet AN: 0
                OSPF Route Type: Area: 0.0.0.1, Type: Router [Transitive Opaque]
                    Type: Transitive Opaque (0x03)
                        0... .... = IANA Authority: Allocated on Standard Action, Early Allocation or Experimental Basis
                        .0.. .... = Transitive across AS: Transitive
                    Subtype (Opaque): OSPF Route Type (0x06)
                    Area ID: 0.0.0.1
                    Route type: Router (1)
                    Options: 0x00 (Metric: Type-1)
                OSPF Router ID: 10.0.61.1:0 [Transitive IPv4-Address-Specific]
                    Type: Transitive IPv4-Address-Specific (0x01)
                        0... .... = IANA Authority: Allocated on Standard Action, Early Allocation or Experimental Basis
                        .0.. .... = Transitive across AS: Transitive
                    Subtype (IPv4): OSPF Router ID (0x07)
                    Router ID: 10.0.61.1
...