Route generation method and device

A first network device, comprises:

• a non-transitory memory storing instructions;
• and
• a processor coupled to the non-transitory memory;
• wherein the instructions, when executed by the processor, cause the first network device to:
• receive a first notification packet from a second network device, wherein the first notification packet comprises slice information, and wherein the slice information corresponds to an algorithm, the first notification packet indicates an association relationship between the slice information and an Internet protocol version 6 (IPv6) address prefix of the second network device, the first notification packet comprises a prefix field, the prefix field comprises the IPV6 address prefix of the second network device, the first notification packet further comprises a sub-type-length-value (sub-TLV) field, the prefix field is outside the sub-TLV field, the sub-TLV field includes an segment routing over an IPV6 data plane (SRv6) segment identifier (SID) field;
• and
• storing a forwarding entry according to the association relationship between the slice information and the IPV6 address prefix of the second network device.

A second network device, comprises:

• a non-transitory memory storing instructions;
• and
• a processor coupled to the non-transitory memory;
• wherein the instructions, when executed by the processor, cause the second network device to:
• obtain slice information and an IPV6 address prefix of the second network device, and generate a first notification packet;
• and
• send the first notification packet to a first network device, wherein the first notification packet comprises the slice information, and wherein the slice information corresponds to an algorithm, the first notification packet indicates an association relationship between the slice information and the IPV6 address prefix of the second network device, the first notification packet is constructed to trigger the first network device to enable it to store a forwarding entry according to the association relationship between the slice information and the IPV6 address prefix of the second network device, the first notification packet comprises a prefix field, the prefix field comprises the IPV6 address prefix of the second network device, the first notification packet further comprises a sub-type-length-value (sub-TLV) field, the prefix field is outside the sub-TLV field, the sub-TLV field includes an segment routing over an IPV6 data plane (SRv6) segment identifier (SID) field.

A network slice generation system, wherein the system comprises a first network device and a second network device;

• wherein the first network device configured to execute first code to:
• receive a first notification packet from the second network device, wherein the first notification packet comprises slice information, and wherein the slice information corresponds to an algorithm, the first notification packet indicates an association relationship between the slice information and an Internet protocol version 6 (IPv6) address prefix of the second network device, the first notification packet comprises a prefix field, the prefix field comprises the IPV6 address prefix of the second network device, the first notification packet further comprises a sub-type-length-value (sub-TLV) field, the prefix field is outside the sub-TLV field, the sub-TLV field includes an segment routing over an IPV6 data plane (SRv6) segment identifier (SID) field;
• and
• store a forwarding entry according to the association relationship between the slice information and the IPV6 address prefix of the second network device;
• wherein the second network device configured to execute second code to:
• obtain the slice information and the IPV6 address prefix of the second network device, and generate the first notification packet;
• and
• send the first notification packet to the first network device.