Network entities on ring networks

Patent metadata

Field	Value
Publication number	US-10516625-B2
Application number	US-201615333167-A
Country	US
Kind code	B2
Filing date	Oct 24, 2016
Priority date	Oct 24, 2016
Publication date	Dec 24, 2019
Grant date	Dec 24, 2019

Abstract

Examples described herein relate to a network entity on a ring network. In an example, a method includes receiving a first packet by a first network entity via a ring network. It is determined from the first packet that the ring network has a plurality of management entities each claiming a respective network entity. Based on the ring network having the plurality of management entities each claiming the respective network entity, the first network entity is transitioned from an unclaimed state to a dummyclaim state, and the first network entity is isolated from a portion of the ring network.

First claim

What is claimed is:

1. A method, comprising:
receiving, by a first network entity via a ring network which comprises a plurality of network entities, a first packet identifying a first management entity which claims a first sender of the first packet; and
in response to receiving, by the first network entity via the ring network, a second packet which identifies a second management entity, wherein the second management entity claims a second sender of the second packet and is different from the first management entity;
starting a timer for an interval of time;
determining that the ring network has a plurality of management entities each claiming a respective network entity; and
based on the ring network having the plurality of management entities each claiming the respective network entity:
transitioning the first network entity from an unclaimed state to a dummyclaim state; and
isolating the first network entity from a remainder of the ring network.

2. The method of claim 1 , wherein isolating the first network entity comprises:
the first network entity rejecting a third packet received via the ring network from a second network entity based on the second network entity being in a claimed state or in a dummyclaim state.

3. The method of claim 1 , wherein the first network entity is associated with a first enclosure, and wherein isolating the first network entity comprises:
the first network entity rejecting a third packet received via the ring network from a second network entity based on the second network entity being associated with a second enclosure which is different from the first enclosure and further based on the second network entity being in a claimed state or in a dummyclaim state; and
the first network entity accepting a fourth packet received via the ring network from a third network entity based on the third network entity being associated with a third enclosure which is the same as the first enclosure.

4. The method of claim 1 , wherein isolating the first network entity comprises the first network entity accepting a third packet received via the ring network from a second network entity based on the second network entity being in an unclaimed state.

5. The method of claim 1 , further comprising:
rejecting a third packet from the first network entity by a second network entity based on the first network entity being in the dummyclaim state and based on the second network entity being in a state from a group consisting of:
the dummyclaim state and a claimed state.

6. The method of claim 1 , wherein determining that the ring network has the plurality of management entities comprises comparing a first claiming entity associated with the first packet with a second claiming entity associated with a third packet received by the first network entity via the ring network.

7. The method of claim 1 , wherein subsequent to transitioning the first network entity from the unclaimed state to the dummyclaim state, the method further comprises:
determining, by the first network entity, from a third packet and one of the second packet and a fourth packet, that the ring network no longer includes the plurality of management entities each claiming the respective network entity; and
in response to the determining the ring network no longer includes the plurality of management entities each claiming the respective network entity, transitioning the first network entity from the dummyclaim state to the unclaimed state.

8. The method of claim 1 , wherein the first packet is from a group consisting of:
a continuity check protocol packet and an owner selection protocol packet.

9. The method of claim 1 , wherein the first network entity includes an uplink to a customer network, and wherein the method further comprises:
based on the ring network having the plurality of management entities each claiming the respective network entity, disabling the uplink of the first network entity.

10. A network entity comprising:
a network switch including:
a first ring link port coupled to a ring network; and
a second ring link port coupled to the ring network; and
a processing resource coupled to a management port of the network switch, wherein the processing resource is to:
receive, via the first ring link port, a first packet identifying a first claiming management entity which claims a first sender of the first packet; and
in response to receiving, via the first ring link port, a second packet which identifies a second claiming management entity, wherein the second management entity claims a second sender of the second packet and is different from the first claiming management entity:
start a timer for an interval of time; and
determine that the ring network has a plurality of claiming management entities; and
based on the plurality of claiming management entities:
send a third packet with an identifier of a claiming management entity to which the network entity is not communicatively coupled; and
reject a fourth packet based on a sender of the third packet being claimed by a management entity of the plurality of claiming management entities.

11. The network entity of claim 10 , wherein the processing resource is to, based on the plurality of claiming management entities, reject a fifth packet based on a sender of the fifth packet having determined that the ring network has a plurality of claiming management entities.

12. The network entity of claim 10 , wherein the processing resource is to, based on the plurality of claiming management entities, accept a fifth packet based on a sender of the fifth packet being unclaimed.

13. The network entity of claim 10 , wherein the processing resource is to, based on the plurality of claiming management entities:
determine from a fifth packet that the ring network no longer includes the plurality of claiming management entities; and
in response to the ring network no longer including the plurality of claiming management entities, accept a sixth packet based on a sender of the sixth packet being claimed.

14. The network entity of claim 10 , wherein the processing resource is to determine that that the ring network has the plurality of claiming management entities based on a claiming device identifier of the first packet being different from a claiming device identifier of a fifth packet received via the ring network.

15. A non-transitory computer-readable memory resource storing instructions that, when executed, cause a processing resource to:
receive a first data packet via a ring network which comprises a plurality of network entities, wherein the first data packet has a first claiming management entity associated therewith; and
in response to receiving a second data packet via the ring network, wherein the second data packet has a second claiming management entity associated therewith, wherein the second claiming management entity is different from the first claiming management entity:
start a timer for an interval of time; and
based on the first claiming management entity being different from the second claiming management entity:
transition a network entity from an unclaimed state to a dummyclaim state; and
prevent a flow of data packets through the ring network.

16. The non-transitory computer-readable memory resource of claim 15 storing instructions that cause the processing resource to:
in the dummyclaim state, reject a first data packet received via the ring network based on a sender of the first data packet being in a claimed state.

17. The non-transitory computer-readable memory resource of

Assignees

• Hewlett Packard Entpr Dev Lp

Inventors

• Murray Christopher

Classifications

• H04L49/102 Primary

  using shared medium, e.g. bus or ring · CPC title

• H04L45/28

  using route fault recovery · CPC title

• H04L12/427

  with decentralised control · CPC title

• H04L45/22

  Alternate routing · CPC title