Documentation
¶
Overview ¶
Package lldp captures and emits IEEE 802.1AB Link Layer Discovery Protocol frames. RX gives cloud-boot-init visibility into the upstream switch (chassis, port, system name) so plans can make rack/port-aware decisions. TX advertises the booting host to the network for inventory purposes.
All wire-level I/O lives in the Linux build (AF_PACKET); other platforms get a no-op stub so the package can still be imported from host tools.
Index ¶
Constants ¶
View Source
const EtherType uint16 = 0x88CC
EtherType is the IEEE-assigned LLDP EtherType.
Variables ¶
This section is empty.
Functions ¶
Types ¶
type Facts ¶
type Facts struct {
ChassisType uint8 // LLDP "chassis ID subtype"
ChassisID string // human form of the chassis ID (MAC if subtype 4)
PortType uint8 // LLDP "port ID subtype"
PortID string // human form of the port ID (iface name if subtype 5)
TTL uint16 // advertised TTL seconds
SystemName string // sysName MIB
SystemDesc string // sysDescr MIB
PortDesc string // ifDescr MIB
Capabilities uint16 // see 802.1AB §8.5.8
MgmtAddr string // first management address (v4 or v6)
}
Facts is the decoded subset of a single LLDPDU we care about.
Source Files
Click to show internal directories.
Click to hide internal directories.