| clnp.checksum | Checksum | Unsigned 16-bit integer | |
| clnp.dsap | DA | Byte array | |
| clnp.dsap.len | DAL | Unsigned 8-bit integer | |
| clnp.len | HDR Length | Unsigned 8-bit integer | |
| clnp.nlpi | Network Layer Protocol Identifier | Unsigned 8-bit integer | |
| clnp.pdu.len | PDU length | Unsigned 16-bit integer | |
| clnp.segment | CLNP Segment | No value | CLNP Segment |
| clnp.segment.error | Reassembly error | No value | Reassembly error due to illegal segments |
| clnp.segment.multipletails | Multiple tail segments found | Boolean | Several tails were found when reassembling the packet |
| clnp.segment.overlap | Segment overlap | Boolean | Segment overlaps with other segments |
| clnp.segment.overlap.conflict | Conflicting data in segment overlap | Boolean | Overlapping segments contained conflicting data |
| clnp.segment.toolongsegment | Segment too long | Boolean | Segment contained data past end of packet |
| clnp.segments | CLNP Segments | No value | CLNP Segments |
| clnp.ssap | SA | Byte array | |
| clnp.ssap.len | SAL | Unsigned 8-bit integer | |
| clnp.ttl | Holding Time | Unsigned 8-bit integer | |
| clnp.type | PDU Type | Unsigned 8-bit integer | |
| clnp.version | Version | Unsigned 8-bit integer | |