Explicit control of aggregation links via IS-IS

Patent metadata

Field	Value
Publication number	US-10164872-B2
Application number	US-201515507879-A
Country	US
Kind code	B2
Filing date	Sep 3, 2015
Priority date	Sep 5, 2014
Publication date	Dec 25, 2018
Grant date	Dec 25, 2018

Abstract

A process is implemented by a network device for enabling the provisioning of explicit trees in a network by reporting link aggregation group (LAG) configuration information to a path computation element (PCE). The network device implements a LAG module and an intermediate system-intermediate system (IS-IS) module that includes an IS-IS path control and reservation module (ISIS-PCR). The process includes reporting LAG configuration by the LAG module to the IS-IS module within the network device, sending a link state protocol data unit (PDU) (LSP) with the LAG configuration in a LAG sub type length value (TLV) by the ISIS-PCR, receiving, by the IS-IS module, an explicit tree that specifies at least one virtual local area network (VLAN) identifier (VID) to an aggregation link of the LAG assignment, and translating, by the ISIS-PCR module, the explicit tree into a LAG configuration, the LAG configuration specifying a conversation to aggregation link assignment.

First claim

The invention claimed is:

1. A method implemented by a network device for enabling the provisioning of explicit trees in a network by reporting link aggregation group (LAG) configuration information to a path computation element (PCE), the network device implementing a LAG module and an intermediate system intermediate system (IS-IS) module including an IS-IS path control and reservation module (ISIS-PCR), the method comprising:
reporting LAG configuration by the LAG module to the IS-IS module within the network device;
sending a link state protocol data unit (PDU) (LSP) with the LAG configuration in a LAG sub type length value (TLV) by the ISIS-PCR;
receiving, by the IS-IS module, an explicit tree that specifies at least one virtual local area network (VLAN) identifier (VID) to aggregation link of the LAG assignment; and
translating, by the ISIS-PCR module, the explicit tree into a LAG configuration, the LAG configuration specifying a conversation to aggregation link assignment.

2. The method of claim 1 , wherein the LAG configuration reported to the IS-IS module includes port information and characteristics of each of the links of the LAG.

3. The method of any of claim 1 , wherein the LSP is sent into the network with a LAG sub-type length value (TLV) identifying links of the LAG to enable inclusion of the links in a topology of the network.

4. The method of claim 1 , wherein the explicit tree is received from the PCE in another LSP that includes a Topology sub-type length value (TLV) that identifies hops of the explicit tree and a VID to link assignment.

5. The method of claim 1 , further comprising:
configuring the LAG by providing the conversation to aggregation link assignment to the aggregation layer.

6. A non-transitory computer readable medium having instructions stored therein defining a method to be implemented by a network device for enabling the provisioning of explicit trees in a network by reporting link aggregation group (LAG) configuration information to a path computation element (PCE), the network device implementing a LAG module and an intermediate system intermediate system (IS-IS) module including an IS-IS path control and reservation module (ISIS-PCR), the instructions when executed by a processor of the network device causing a set of operations to be performed comprising:
reporting LAG configuration by the LAG module to the IS-IS module within the network device;
sending a link state protocol data unit (PDU) (LSP) with the LAG configuration in a LAG sub type length value (TLV) by the ISIS-PCR;
receiving, by the IS-IS module, an explicit tree that specifies at least one virtual local area network (VLAN) identifier (VID) to aggregation link of the LAG assignment; and
translating, by the ISIS-PCR module, the explicit tree into a LAG configuration, the LAG configuration specifying a conversation to aggregation link assignment.

7. The non-transitory computer readable medium of claim 6 , wherein the LAG configuration reported to the IS-IS module includes port information and characteristics of each of the links of the LAG.

8. The non-transitory computer readable medium of claim 6 , wherein the LSP is sent into the network with a LAG sub-type length value (TLV) identifying links of the LAG to enable inclusion of the links in a topology of the network.

9. The non-transitory computer readable medium of claim 6 , wherein the explicit tree is received from the PCE in another LSP that includes a Topology sub-type length value (TLV) that identifies hops of the explicit tree and a VID to link assignment.

10. The non-transitory computer readable medium of claim 6 , having further instructions stored therein which when executed cause operations to be performed further comprising:
configuring the LAG by providing the conversation to aggregation link assignment to the aggregation layer.

11. A network device to implement a method for enabling the provisioning of explicit trees in a network by reporting link aggregation group (LAG) configuration information to a path computation element (PCE), the network device implementing a LAG module and an intermediate system intermediate system (IS-IS) module including an IS-IS path control and reservation module (ISIS-PCR), the network device comprising:
a non-transitory computer-readable medium having stored therein an intermediate system to intermediate system module including an IS-IS path control and reservation (ISIS-PCR) module and a LAG module; and
a processor coupled to the non-transitory computer-readable medium, the processor configured to execute the IS-IS module and the LAG module, the LAG module configured to report LAG configuration by the LAG module to the IS-IS module within the network device, the ISIS-PCR module configured to send a link state protocol data unit (PDU) (LSP) with the LAG configuration in a LAG sub type length value (TLV), the IS-IS module configured to receive an explicit tree that specifies at least one virtual local area network (VLAN) identifier (VID) to aggregation link of the LAG assignment, and the ISIS-PCR module further configured to translate the explicit tree into a LAG configuration, the LAG configuration specifying a conversation to aggregation link assignment.

12. The network device of claim 11 , wherein the LAG configuration reported to the IS-IS module includes port information and characteristics of each of the links of the LAG.

13. The network device of claim 11 , wherein the LSP is sent into the network with a LAG sub-type length value (TLV) identifying links of the LAG to enable inclusion of the links in a topology of the network.

14. The network device of claim 11 , wherein the explicit tree is received from the PCE in another LSP that includes a Topology sub-type length value (TLV) that identifies hops of the explicit tree and a VID to link assignment.

15. The network device of claim 11 , wherein the ISIS-PCR module is further configured to configure the LAG by providing the conversation to aggregation link assignment to the aggregation layer.

16. A computing device configured to execute a plurality of virtual machines for implementing network function virtualization (NFV), wherein a virtual machine from the plurality of virtual machines is configured to execute a method for enabling the provisioning of explicit trees in a network by reporting link aggregation group (LAG) configuration information to a path computation element (PCE), the computing device comprising:
a non-transitory computer-readable medium having stored therein an intermediate system to intermediate system module including an IS-IS path control and reservation (ISIS-PCR) module and a LAG module; and
a processor coupled to the non-transitory computer-readable medium, the processor configured to execute the virtual machine, the virtual machine to execute the IS-IS module and the LAG module, the LAG module configured to report LAG configuration by the LAG module to the IS-IS module within the network device, the ISIS-PCR module configured to send a link state protocol data unit (PDU) (LSP) with the LAG configuration in a LAG sub type length value (TLV), the IS-IS module configured to receive an explicit tree that specifies at least one virtual local area network (VLAN) identifier (VID) to aggregation link of the LAG assignment, and the ISIS-PCR module further configured to translate the explicit tree into a LAG configuration, the LAG configuration specifying a conversation to aggregation link assignment.

17. The computing device of claim 16 , wherein the LAG configuration reported to the IS-IS module includes p

Assignees

• Ericsson Telefon Ab L M

Inventors

• Saltsidis Panagiotis
• Farkas János

Classifications

• Y02D50/30

  Cross-Sectional Technologies · mapped topic

• H04L47/76

  using dynamic resource allocation, e.g. in-call renegotiation requested by the user or requested by the network in response to changing network conditions · CPC title

• H04L47/41

  by acting on aggregated flows or links · CPC title

• H04L47/125

  by balancing the load, e.g. traffic engineering · CPC title

• H04L45/245 Primary

  Link aggregation, e.g. trunking · CPC title