Advertising network layer reachability information specifying a quality of service for an identified network flow

A non-transitory computer readable medium comprising computer readable instructions that, when executed, cause a processor of a network device to at least:

• construct a packet filter based on a flow specification and a first quality of service advertised by a destination device for a first network flow, the packet filter to associate a default quality of service with a first incoming packet not associated with any of one or more advertised network flows represented in the packet filter, the one or more advertised network flows including the first network flow;
• set, based on the packet filter, one or more bits of a second incoming packet that belongs to the first network flow to a value representative of the first quality of service;
• and
• cause the second incoming packet to be routed towards the destination device based on the first quality of service.

A method for a network device, the method comprising;

• constructing, by executing an instruction with a processor of the network device, a packet filter based on a flow specification and a first quality of service advertised by a destination device for a first network flow, the packet filter to associate a default quality of service with a first incoming packet not associated with any of one or more advertised network flows represented in the packet filter, the one or more advertised network flows including the first network flow;
• setting, based on the packet filter, one or more bits of a second incoming packet that belongs to the first network flow to a value representative of the first quality of service;
• and
• causing, by executing an instruction with the processor, the second incoming packet to be routed towards the destination device based on the first quality of service.