Struct ospf_parser::OspfHelloPacket

pub struct OspfHelloPacket {
    pub header: Ospfv2PacketHeader,
    pub network_mask: u32,
    pub hello_interval: u16,
    pub options: u8,
    pub router_priority: u8,
    pub router_dead_interval: u32,
    pub designated_router: u32,
    pub backup_designated_router: u32,
    pub neighbor_list: Vec<u32>,
}

The Hello packet

Hello packets are OSPF packet type 1. These packets are sent periodically on all interfaces (including virtual links) in order to establish and maintain neighbor relationships. In addition, Hello Packets are multicast on those physical networks having a multicast or broadcast capability, enabling dynamic discovery of neighboring routers.

All routers connected to a common network must agree on certain parameters (Network mask, HelloInterval and RouterDeadInterval). These parameters are included in Hello packets, so that differences can inhibit the forming of neighbor relationships. A detailed explanation of the receive processing for Hello packets is presented in Section 10.5. The sending of Hello packets is covered in Section 9.5.

Fields

header: Ospfv2PacketHeader

network_mask: u32

hello_interval: u16

options: u8

router_priority: u8

router_dead_interval: u32

designated_router: u32

backup_designated_router: u32

neighbor_list: Vec<u32>

Implementations

impl OspfHelloPacket

pub fn network_mask(&self) -> Ipv4Addr

pub fn designated_router(&self) -> Ipv4Addr

pub fn backup_designated_router(&self) -> Ipv4Addr

Trait Implementations

impl Debug for OspfHelloPacket

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'nom> Parse<&'nom [u8], Error<&'nom [u8]>> for OspfHelloPacket

fn parse_be(orig_i: &'nom [u8]) -> IResult<&'nom [u8], Self>

Parse input as Big-Endian

fn parse_le(orig_i: &'nom [u8]) -> IResult<&'nom [u8], Self>

Parse input as Little-Endian

fn parse(orig_i: &'nom [u8]) -> IResult<&'nom [u8], Self>

Parse input, not knowing the endianness