BgpUpdatePathAttributesMpReachNlri¶

class BgpUpdatePathAttributesMpReachNlri

MP_REACH_NLRI (RFC 4760 Section 3, Type code 14): carries reachable NLRI for a non-IPv4 address family (here IPv6 unicast: AFI=2, SAFI=1) together with that family’s next hop.

Usage diagram¶

Inheritance diagram¶

Extends¶

Name	Type	Description
BgpUpdatePathAttributes	class	(no description)

Fields¶

Name	Type	Description
optionalBit	bool	1 bit, Optional bit. It defines whether the attribute is optional (if set to 1) or well-known (if set to 0).
transitiveBit	bool	1 bit, Transitive bit. It defines whether an optional attribute is transitive (if set to 1) or non-transitive (if set to 0). Transitive bit MUST be set to 1 for well-known attributes
partialBit	bool	1 bit, Partial bit. It defines whether the information contained in the optional transitive attribute is partial (if set to 1) or complete (if set to 0). For well-known attributes and for optional non-transitive attributes, the Partial bit MUST be set to 0.
extendedLengthBit	bool	1 bit, Extended Length bit. It defines whether the Attribute Length is one octet (if set to 0) or two octets (if set to 1).
reserved	unsigned short	4 bit
typeCode	BgpUpdateAttributeTypeCode	1 octet
length	unsigned short	2 octets or just 1 depending on the value of flags.extendedLengthBit
typeCode
optionalBit
transitiveBit
afi	uint16_t	Address Family Identifier (2 = IPv6)
safi	uint8_t	Subsequent Address Family Identifier (1 = unicast)
nextHopLength	uint8_t	length of the next-hop network address in octets (16 for an IPv6 global address)
nextHop	L3Address	next-hop network address (1 reserved octet on the wire, RFC 4760)
nlri	BgpUpdateNlri6[]	Network Layer Reachability Information

Properties¶

Name	Value	Description
packetData

Source code¶

// MP_REACH_NLRI (RFC 4760 Section 3, Type code 14): carries reachable NLRI for a non-IPv4
// address family (here IPv6 unicast: AFI=2, SAFI=1) together with that family's next hop.
class BgpUpdatePathAttributesMpReachNlri extends BgpUpdatePathAttributes
{
    typeCode = MP_REACH_NLRI;
    optionalBit = true;
    transitiveBit = false;
    uint16_t afi;           // Address Family Identifier (2 = IPv6)
    uint8_t safi;           // Subsequent Address Family Identifier (1 = unicast)
    uint8_t nextHopLength;  // length of the next-hop network address in octets (16 for an IPv6 global address)
    L3Address nextHop;      // next-hop network address
    // (1 reserved octet on the wire, RFC 4760)
    BgpUpdateNlri6 nlri[];  // Network Layer Reachability Information
}

File: src/inet/routing/bgpv4/bgpmessage/BgpHeader.msg