Stateless autoconfiguration of hostnames of network devices

Patent metadata

Field	Value
Publication number	US-9699136-B2
Application number	US-201514643979-A
Country	US
Kind code	B2
Filing date	Mar 10, 2015
Priority date	Jun 7, 2011
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

Techniques are disclosed for dynamically determining or learning hostnames. According to embodiments described herein, a solicitation message is received at a first network device. Based on the solicitation message, a hostname is determined for a second network device that sent the solicitation message. A first network address is also determined for the second network device that sent the solicitation message. A mapping between the hostname and the first network address is stored at the first network device.

First claim

What is claimed is:

1. A method comprising:
in a computer system configured as a router, receiving a solicitation message comprising a first network address of a host device and a hostname of the host device;
in response to receiving the first network address and the hostname in the solicitation message, generating, by the router, a hostname-to-first network address mapping between the first network address and the hostname for the host device;
determining, using the router, that the hostname-to-first network address mapping is unique based on a comparison between the hostname-to-first network address mapping and mapping data stored in the router;
using the router, sending the hostname-to-first network address mapping from the router to a server that provides a network management platform, wherein the server is different from the host device.

2. The method of claim 1 , wherein the solicitation message is received as part of a duplicate address detection (DAD) process for determining whether a tentative address generated by the host device during stateless address autoconfiguration (SLAAC) is already in use by another host device.

3. The method of claim 1 , wherein the solicitation message is generated at the host device in response to receiving an advertisement message from the router that requests the hostname from the host device.

4. The method of claim 1 , further comprising: receiving a second network address for the host device; and mapping the hostname of the host device to the second network address.

5. The method of claim 4 , wherein the hostname of the host device is mapped to both the first network address and the second network address.

6. The method of claim 1 , wherein the first network address is a global Internet Protocol version six (IPv6) address.

7. The method of claim 1 , wherein the server comprises a name server of Domain Name System (DNS).

8. The method of claim 1 , wherein the server comprises a Dynamic Host Configuration Protocol (DHCP) server.

9. The method of claim 1 , wherein the solicitation message is a neighbor solicitation message.

10. The method of claim 1 , wherein the solicitation message is a router solicitation message.

11. A computer system comprising:
one or more processors; and
one or more non-transitory media storing instructions, which, when executed by the one or more processors, cause:
in a computer system configured as a router, receiving a solicitation message comprising a first network address of a host device and a hostname of the host device;
in response to receiving the first network address and the hostname in the solicitation message, generating, by the router, a hostname-to-first network address mapping between the first network address and the hostname for the host device;
determining, using the router, that the hostname-to-first network address mapping is unique based on a comparison between the hostname-to-first network address mapping and mapping data stored in the router;
using the router, sending the hostname-to-first network address mapping from the router to a server that provides a network management platform, wherein the server is different from the host device.

12. The system of claim 11 , wherein the solicitation message is received as part of a DAD process for determining whether a tentative address generated by the host device during SLAAC is already in use by another host device.

13. The system of claim 11 , wherein the solicitation message is generated at the host device in response to receiving an advertisement message from the router that requests the hostname from the host device.

14. The system of claim 11 , further comprising: receiving a second network address for the host device; and mapping the hostname of the host device to the second network address.

15. The system of claim 14 , wherein the hostname of the host device is mapped to both the first network address and the second network address.

16. The system of claim 11 , wherein the first network address is a global IPv6 address.

17. The system of claim 11 , wherein the server comprises a name server of Domain Name System (DNS).

18. The system of claim 11 , wherein the server comprises a DHCP server.

19. The system of claim 11 , wherein the solicitation message is a neighbor solicitation message.

20. The system of claim 11 , wherein the solicitation message is a router solicitation message.

Assignees

• Cisco Tech Inc

Inventors

• Asati Rajiv
• Droms Ralph

Classifications

• H04L61/2015

  Electricity · mapped topic

• H04L61/2092

  Electricity · mapped topic

• H04L61/2076

  Electricity · mapped topic

• H04L61/1511 Primary

  Electricity · mapped topic

• H04L41/0883

  Semiautomatic configuration, e.g. proposals from system · CPC title