bgp

Documentation

Index

• Constants
• func GenerateRouterID(nodeIPAware utils.NodeIPAware, configRouterID string) (string, error)
• func ParseNextHop(path *gobgpapi.Path) (net.IP, error)
• func ParsePath(path *gobgpapi.Path) (*net.IPNet, net.IP, error)
• func ValidateCommunity(arg string) error

Constants

const (
	CommunityMaxSize     = 32
	CommunityMaxPartSize = 16
)

Functions

func GenerateRouterID

func GenerateRouterID(nodeIPAware utils.NodeIPAware, configRouterID string) (string, error)

GenerateRouterID will generate a router ID based upon the user's configuration (or lack there of) and the node's primary IP address if the user has not specified. If the user has configured the router ID as "generate" then we will generate a router ID based upon fnv hashing the node's primary IP address.

func ParseNextHop

func ParseNextHop(path *gobgpapi.Path) (net.IP, error)

ParseNextHop takes in a GoBGP Path and parses out the destination's next hop from its attributes. If it can't parse a next hop IP from the GoBGP Path, it returns an error.

func ParsePath

func ParsePath(path *gobgpapi.Path) (*net.IPNet, net.IP, error)

ParsePath takes in a GoBGP Path and parses out the destination subnet and the next hop from its attributes. If successful, it will return the destination of the BGP path as a subnet form and the next hop. If it can't parse the destination or the next hop IP, it returns an error.

func ValidateCommunity

func ValidateCommunity(arg string) error

ValidateCommunity takes in a string and attempts to parse a BGP community out of it in a way that is similar to gobgp (internal/pkg/table/policy.go:ParseCommunity()). If it is not able to parse the community information it returns an error.