| NARP, NBMA Address Resolution Protocol |
| Description | Glossary | RFCs | Publications | Obsolete RFCs |
| Protocol suite: | TCP/IP. |
| Type: | Transport layer protocol. |
| IP protocol: | 54. |
| Working groups: | rolc, Routing over Large Clouds. |
| MAC header | IP header | NARP header | Data ::: |
NARP header:
| 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Version | Hop count | Checksum | |||||||||||||||||||||||||||||
| Type | Code | reserved | |||||||||||||||||||||||||||||
| Destination IP address | |||||||||||||||||||||||||||||||
| Source IP address | |||||||||||||||||||||||||||||||
| Length | NBMA address ::: | ||||||||||||||||||||||||||||||
Version.
8 bits.
NARP version number. Always set to 1.
Hop count.
8 bits.
Indicates the maximum number of NASs that a request or reply is allowed to
traverse before being discarded.
Checksum.
16 bits.
The standard IP checksum over the entire NARP packet starting with the fixed header.
Type. 8 bits.
NARP packet type.
| Type | Description |
|---|---|
| 1 | Request. |
| 2 | Reply. |
Code. 8 bits.
Request codes:
| Code | Description |
|---|---|
| 1 | NARP Request. |
| 2 | NARP Request for Authoritative Information. |
Reply codes:
| Code | Description |
|---|---|
| 1 | Positive, Non-authoritative Reply. |
| 2 | Positive, Authoritative Reply. |
| 3 | Negative, Non-authoritative Reply. |
| 4 | Negative, Authoritative Reply. |
reserved. 16 bits.
Destination IP address. 32 bits.
Source IP address. 32 bits.
Length. 8 bits.
NAS, NBMA ARP Server.
RFCs:
[RFC 1735] NBMA Address Resolution Protocol (NARP).
| Description | Glossary | RFCs | Publications | Obsolete RFCs |