Table A-77. ISO 9542 ESIS Routeing Information Exchange Protocol (esis)
| Field | Field Name | Type |
|---|---|---|
| esis.chksum | Checksum | Unsigned 16-bit integer |
| esis.htime | Holding Time | Unsigned 16-bit integer |
| esis.length | PDU Length | Unsigned 8-bit integer |
| esis.nlpi | Network Layer Protocol Identifier | Unsigned 8-bit integer |
| esis.res | Reserved(==0) | Unsigned 8-bit integer |
| esis.type | PDU Type | Unsigned 8-bit integer |
| esis.ver | Version (==1) | Unsigned 8-bit integer |