RIP (`rip`)

Layer: Application and control
Header: variable length
Notes: Routing protocols

Reached from

Lower layer	Selector	Value
`udp`	`dst_port` / `src_port`	520 (0x0208)

Fields

Field	Type	Default	Auto	Description
`command`	`enum(8)`	`2` (response)		RIP command (1 = request, 2 = response).
`version`	`uint(8)`	`2`		RIP version (1 or 2; RIPng uses 1).
`zero`	`uint(16)`	`0`
`entries`	`list<struct>` — rest of the PDU	1 items		Route entries (AFI, route tag, address, mask, next hop, metric).

`command`

Value	Name
1 (0x01)	`request`
2 (0x02)	`response`

`entries`

Each item is a group of the fields below.

Field	Type	Default	Auto	Description
`afi`	`uint(16)`
`route_tag`	`uint(16)`
`address`	`ipv4`
`subnet_mask`	`ipv4`
`next_hop`	`ipv4`
`metric`	`uint(32)`

Constraints

Level	Rule
warning	`version` within 1..2

Sample templates

interop-ripv2-response-route — templates/interop/ripv2-response-route.wpg.yaml
ripv1-request — templates/protocols/routing/ripv1-request.wpg.yaml
ripv2-response — templates/protocols/routing/ripv2-response.wpg.yaml