No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

S12700 V200R011C10 MIB Reference

This document provides the function overview, relationships between tables, description of single objects, description of MIB tables, and description of alarm objects.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
HUAWEI-STACK-MIB

HUAWEI-STACK-MIB

Function Overview

HUAWEI-STACK-MIB, a private MIB of Huawei, provide the monitoring and management functions for CSS devices.

Root object:

iso(1).org(3).dod(6).internet(1).private(4).enterprises(1).huawei(2011).huaweiMgmt(5).hwDatacomm(25).huaweiStackMIB(183)

Relationship Between Tables

None.

Description of Single Objects

hwCssEnable

OID

Object Name

Syntax

Max Access

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.1.1

hwCssEnable

EnabledStatus

Read-only

This object indicates whether the CSS function is enabled on a device:
  • 1: enabled
  • 2: disabled

This object is implemented as defined in the corresponding MIB files.

Description of MIB Tables

hwCssMemberInfoTable

This table describes member information about a CSS system.

The index of this table is hwCssMemberFrameId.

OID

Object Name

Syntax

Max Access

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.2.1.1

hwCssMemberFrameId

Integer32

read-only

This object indicates the current chassis ID. The value ranges from 1 to 255.

The current value is 1 or 2.

1.3.6.1.4.1.2011.5.25.183.3.2.1.2

hwCssMemberConfigFrameId

Integer32

read-write

This object indicates the configured chassis ID. The value ranges from 0 to 255.

The value 0 is invalid and used only when the S12700 standby chassis has no MPU installed.

The current value is 0 to 2.

1.3.6.1.4.1.2011.5.25.183.3.2.1.3

hwCssMemberPriority

Integer32

read-only

This object indicates the current priority. The value ranges from 0 to 255.

  • The value 0 is invalid and used only when the S12700 standby chassis has no MPU installed.

  • This value is the default priority 1 if CSS is not enabled on the switch.

This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.2.1.4

hwCssMemberConfigPriority

Integer32

read-write

This object indicates the configured priority. The value ranges from 0 to 255.

The value 0 is invalid and used only when the S12700 standby chassis has no MPU installed.

This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.2.1.5

hwCssMemberMasterForce

INTEGER

read-only

This object indicates the current status of the forcibly specified master switch:
  • 1: enabled
  • 2: disabled
  • 255: unknown(The value 255 is invalid and used only when the S12700 standby chassis has no MPU installed.)

This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.2.1.6

hwCssMemberConfigMasterForce

INTEGER

read-write

This object indicates whether the function of specifying the master switch is enabled:
  • 1: enabled
  • 2: disabled
  • 255: unknown(The value 255 is invalid and used only when the S12700 standby chassis has no MPU installed.)

This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.2.1.7

hwCssMemberConfigEnable

INTEGER

read-write

This object indicates whether the CSS function is enabled:
  • 1: enabled
  • 2: disabled
  • 255: unknown(The value 255 is invalid and used only when the S12700 standby chassis has no MPU installed.)

This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.2.1.8

hwCssMemberRole

INTEGER

read-only

This object indicates the roles in a CSS:
  • 1: master
  • 2: standby
  • 3: slave
  • 4: single
  • 10: unknown, indicating that the CSS function is not enabled on a switch.
The current value is:
  • 1: master
  • 2: standby
  • 4: single
  • 10: unknown

Creation Restriction

No entry can be created in this table.

Modification Restriction

Only the read-write objects can be modified.

Deletion Restriction

The entries in this table cannot be deleted.

Access Restriction

The entries in this table can be read without restriction.

hwCssPortInfoTable

This table describes the CSS port status in CSS card connection mode.

The indexes of this object are hwCssPortFrameId, hwCssPortSlotId, hwCssPortCardId, hwCssPortPortId, and hwCssPortName.

OID

Object Name

Syntax

Max Access

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.4.1.1

hwCssPortFrameId Integer32 not-accessible This object indicates the chassis ID of a CSS port. The value ranges from 1 to 8. The current value is 1 or 2.

1.3.6.1.4.1.2011.5.25.183.3.4.1.2

hwCssPortSlotId Integer32 not-accessible This object indicates the slot ID of a CSS port. The value ranges from 1 to 18. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.4.1.3

hwCssPortCardId Integer32 not-accessible This object indicates the subcard ID of a CSS port. The value is 0 or 1. The current value is 1.

1.3.6.1.4.1.2011.5.25.183.3.4.1.4

hwCssPortPortId Integer32 not-accessible This object indicates the CSS port ID. The value ranges from 0 to 8. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.4.1.5

hwCssPortName OCTET STRING read-only This object indicates the name of a CSS port. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.4.1.6

hwCssPortSpeed OCTET STRING read-only This object indicates the rate of a CSS port. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.4.1.7

hwCssPortOperStatus INTEGER read-only This object indicates the physical status of a CSS port.
  • 0: down
  • 1: up
This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.4.1.8

hwCssPortAdminStatus INTEGER read-only This object indicates the management status of a CSS port.
  • 0: undoshutdown
  • 1: shutdown
This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.4.1.9

hwCssPortInOctets Counter64 read-only This object indicates the total number of bytes received on a CSS port. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.4.1.10

hwCssPortInUcastPkts Counter64 read-only This object indicates the total number of unicast packets received on a CSS port. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.4.1.11

hwCssPortInMcastPkts Counter64 read-only This object indicates the total number of multicast packets received on a CSS port. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.4.1.12

hwCssPortInBcastPkts Counter64 read-only This object indicates the total number of broadcast packets received on a CSS port. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.4.1.13

hwCssPortInDiscards Counter64 read-only This object indicates the number of dropped packets that are received on a CSS port. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.4.1.14

hwCssPortInErrors Counter64 read-only This object indicates the number of error packets received on a CSS port. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.4.1.15

hwCssPortInCRCErrors Counter64 read-only This object indicates the number of CRC error packets received on a CSS port. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.4.1.16

hwCssPortOutOctets Counter64 read-only This object indicates the total number of bytes sent on a CSS port. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.4.1.17

hwCssPortOutUcastPkts Counter64 read-only This object indicates the number of unicast packets sent on a CSS port. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.4.1.18

hwCssPortOutMcastPkts Counter64 read-only This object indicates the number of multicast packets sent on a CSS port. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.4.1.19

hwCssPortOutBcastPkts Counter64 read-only This object indicates the number of broadcast packets sent on a CSS port. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.4.1.20

hwCssPortOutDiscards Counter64 read-only This object indicates the number of dropped packets sent on a CSS port. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.4.1.21

hwCssPortOutErrors Counter64 read-only This object indicates the number of error packets sent on a CSS port. This object is implemented as defined in the corresponding MIB file.

Creation Restriction

No entry can be created in this table.

Modification Restriction

The entries in this table cannot be modified.

Deletion Restriction

The entries in this table cannot be deleted.

Access Restriction

The entries in this table can be read without restriction.

hwCssLinkInfoTable

This table describes the CSS link status in CSS card connection mode.

The indexes of this object are hwCssLinkLocFrameId, hwCssLinkLocSlotId, hwCssLinkLocCardId, and hwCssLinkLocPortId.

OID

Object Name

Syntax

Max Access

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.5.1.1

hwCssLinkLocFrameId Integer32 not-accessible This object indicates the local chassis ID of a CSS link. The value ranges from 1 to 8. The current value is 1 or 2.

1.3.6.1.4.1.2011.5.25.183.3.5.1.2

hwCssLinkLocSlotId Integer32 not-accessible This object indicates the local slot ID of a CSS link. The value ranges from 1 to 18. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.5.1.3

hwCssLinkLocCardId Integer32 not-accessible This object indicates the local subcard ID of a CSS link. The value is 0 or 1. The current value is 1.

1.3.6.1.4.1.2011.5.25.183.3.5.1.4

hwCssLinkLocPortId Integer32 not-accessible This object indicates the local port ID of a CSS link. The value ranges from 1 to 8. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.5.1.5

hwCssLinkLocPortName OCTET STRING read-only This object indicates the local port name of a CSS link. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.5.1.6

hwCssLinkRemFrameId Integer32 read-only This object indicates the remote chassis ID of a CSS link. The value ranges from 1 to 8. The current value is 1 or 2.

1.3.6.1.4.1.2011.5.25.183.3.5.1.7

hwCssLinkRemSlotId Integer32 read-only This object indicates the remote slot ID of a CSS link. The value ranges from 1 to 18. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.5.1.8

hwCssLinkRemCardId Integer32 read-only This object indicates the remote subcard ID of a CSS link. The value is 0 or 1. The current value is 1.

1.3.6.1.4.1.2011.5.25.183.3.5.1.9

hwCssLinkRemPortId Integer32 read-only This object indicates the remote port ID of a CSS link. The value ranges from 1 to 8. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.5.1.10

hwCssLinkRemPortName OCTET STRING read-only This object indicates the remote port name of a CSS link. This object is implemented as defined in the corresponding MIB file.

1.3.6.1.4.1.2011.5.25.183.3.5.1.11

hwCssLinkSpeed OCTET STRING read-only This object indicates the rate of a CSS link. This object is implemented as defined in the corresponding MIB file.

Creation Restriction

No entry can be created in this table.

Modification Restriction

The entries in this table cannot be modified.

Deletion Restriction

The entries in this table cannot be deleted.

Access Restriction

The entries in this table can be read without restriction.

Description of Alarm Objects

hwCssLinkDown

OID

Object Name

Bound Variable

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.3.2.1

hwCssLinkDown

  • hwCssTrapFrameId1
  • hwCssTrapSlotId1
  • hwCssTrapPortId1

This object indicates that the CSS port goes Down.

This object is implemented as defined in the corresponding MIB file.

hwCssLinkUp

OID

Object Name

Bound Variable

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.3.2.2

hwCssLinkUp

  • hwCssTrapFrameId1
  • hwCssTrapSlotId1
  • hwCssTrapPortId1

This object indicates that the CSS port goes Up.

This object is implemented as defined in the corresponding MIB file.

hwCssSwitchOver

OID

Object Name

Bound Variable

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.3.2.3

hwCssSwitchOver

  • hwCssTrapFrameId1

This object indicates that an active/standby switchover occurs in the CSS.

This object is implemented as defined in the corresponding MIB file.

hwCssConnectError

NOTE:

Only S12710 supports this object.

OID

Object Name

Bound Variable

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.3.2.4

hwCssConnectError

  • hwCssTrapFrameId1
  • hwCssTrapSlotId1
  • hwCssTrapPortId1
  • hwCssTrapFrameId2
  • hwCssTrapSlotId2
  • hwCssTrapPortId2
  • hwCssTrapFrameId3
  • hwCssTrapSlotId3
  • hwCssTrapPortId3

This object indicates that the CSS cables are incorrectly connected.

This object is implemented as defined in the corresponding MIB file.

hwCssSplit

OID

Object Name

Bound Variable

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.3.2.5

hwCssSplit

None

This object indicates that the CSS system is divided.

This object is implemented as defined in the corresponding MIB file.

hwCssEstablish

OID

Object Name

Bound Variable

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.3.2.6

hwCssEstablish

None

This object indicates that the CSS system is created.

This object is implemented as defined in the corresponding MIB file.

hwCssFastUpgradeFail

OID

Object Name

Bound Variable

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.3.2.7

hwCssFastUpgradeFail

None

This object indicates that upgrading a CSS fails.

This object is implemented as defined in the corresponding MIB file.

hwCssPortUpDownAlarm

OID

Object Name

Bound Variable

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.3.2.11

hwCssPortUpDownAlarm

hwCssTrapErrorPortId

This object indicates that a CSS port flaps between Up and Down states.

This object is implemented as defined in the corresponding MIB file.

hwCssPortCrcErrorAlarm

OID

Object Name

Bound Variable

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.3.2.12

hwCssPortCrcErrorAlarm

hwCssTrapErrorPortId

This object indicates that a CRC error has occurred on a CSS port.

This object is implemented as defined in the corresponding MIB file.

hwCssPortErrorDown

OID

Object Name

Bound Variable

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.3.2.13

hwCssPortErrorDown

hwCssTrapErrorPortId

This object indicates that a CSS port has changed to Error-down state.

This object is implemented as defined in the corresponding MIB file.

hwCssPortErrorDownRecover

OID

Object Name

Bound Variable

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.3.2.14

hwCssPortErrorDownRecover

hwCssTrapErrorPortId

This object indicates that a CSS port has changed from Error-down state to Up state.

This object is implemented as defined in the corresponding MIB file.

hwCssPhyVs08ConnectError

OID

Object Name

Bound Variable

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.3.2.15

hwCssPhyVs08ConnectError

  • hwStackLocalIfName
  • hwStackPeerIfName
  • hwStackConnectMethod

This object indicates that CSS ports are incorrectly connected.

This object is implemented as defined in the corresponding MIB file.

hwCssStandbyError

OID

Object Name

Bound Variable

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.3.2.16

hwCssStandbyError

None

All MPUs in the standby chassis are set, and the CSS starts to run in standby (no MPU) state.

This object is implemented as defined in the corresponding MIB file.

hwCssStandbyErrorRestore

OID

Object Name

Bound Variable

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.3.2.17

hwCssStandbyErrorRestore

None

The CSS exits from the standby (no MPU) state.

This object is implemented as defined in the corresponding MIB file.

hwCssPortStateError

OID

Object Name

Bound Variable

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.3.2.18

hwCssPortStateError

hwCssTrapErrorPortId

The status of a CSS port is abnormal.

This object is implemented as defined in the corresponding MIB file.

hwCssPhyCardConnectError

NOTE:

Only S12710 supports this object.

OID

Object Name

Bound Variable

Description

Implemented Specifications

1.3.6.1.4.1.2011.5.25.183.3.3.2.19

hwCssPhyCardConnectError

  • hwStackLocalIfName
  • hwStackPeerIfName
  • hwStackConnectErrReason

CSS ports are incorrectly connected.

This object is implemented as defined in the corresponding MIB file.

Objects Not Supported by the Device

The functions of the following objects are not supported on the device. Therefore, do not use these objects to maintain the device.

Table 111-1  List of objects not supported by the device

Object OID

Object Name

Table to Which the Object Belongs

1.3.6.1.4.1.2011.5.25.183.1.1 hwStackRun A single object
1.3.6.1.4.1.2011.5.25.183.1.2 hwStackTopoType A single object
1.3.6.1.4.1.2011.5.25.183.1.3 hwStackMacAddressSwitchTime A single object
1.3.6.1.4.1.2011.5.25.183.1.4 hwStackSystemMac A single object
1.3.6.1.4.1.2011.5.25.183.1.5 hwStackIsStackDevice A single object
1.3.6.1.4.1.2011.5.25.183.1.6 hwStackReservedVlanId A single object
1.3.6.1.4.1.2011.5.25.183.1.7 hwStackClearUnsupportCfg A single object
1.3.6.1.4.1.2011.5.25.183.1.20 hwStackMemberInfoTable A table
1.3.6.1.4.1.2011.5.25.183.1.20.1.1 hwMemberCurrentStackId A table object
1.3.6.1.4.1.2011.5.25.183.1.20.1.2 hwMemberStackPriority A table object
1.3.6.1.4.1.2011.5.25.183.1.20.1.3 hwMemberStackRole A table object
1.3.6.1.4.1.2011.5.25.183.1.20.1.4 hwMemberStackMacAddress A table object
1.3.6.1.4.1.2011.5.25.183.1.20.1.5 hwMemberStackDeviceType A table object
1.3.6.1.4.1.2011.5.25.183.1.20.1.6 hwMemberConfigStackId A table object
1.3.6.1.4.1.2011.5.25.183.1.20.1.7 hwMemberStackObjectId A table object
1.3.6.1.4.1.2011.5.25.183.1.21 hwStackPortTable A table
1.3.6.1.4.1.2011.5.25.183.1.21.1.1 hwStackPortStackId A table object
1.3.6.1.4.1.2011.5.25.183.1.21.1.2 hwStackPortId A table object
1.3.6.1.4.1.2011.5.25.183.1.21.1.3 hwStackPortName A table object
1.3.6.1.4.1.2011.5.25.183.1.21.1.4 hwStackNeighborInfo A table object
1.3.6.1.4.1.2011.5.25.183.1.21.1.5 hwStackPortStatus A table object
1.3.6.1.4.1.2011.5.25.183.1.22.1 hwStackLinkUp An alarm object
1.3.6.1.4.1.2011.5.25.183.1.22.2 hwStackLinkDown An alarm object
1.3.6.1.4.1.2011.5.25.183.1.22.3 hwStackStandbyChange An alarm object
1.3.6.1.4.1.2011.5.25.183.1.22.4 hwStackSwitchOver An alarm object
1.3.6.1.4.1.2011.5.25.183.1.22.5 hwStackSystemRestart An alarm object
1.3.6.1.4.1.2011.5.25.183.1.22.6 hwStackStackMemberAdd An alarm object
1.3.6.1.4.1.2011.5.25.183.1.22.7 hwStackStackMemberLeave An alarm object
1.3.6.1.4.1.2011.5.25.183.1.22.8 hwStackStackMacChange An alarm object
1.3.6.1.4.1.2011.5.25.183.1.22.9 hwStackLogicStackPortLinkErr An alarm object
1.3.6.1.4.1.2011.5.25.183.1.22.10 hwStackPhyStackPortLinkErr An alarm object
1.3.6.1.4.1.2011.5.25.183.1.22.11 hwPhyStackPortIsDown An alarm object
1.3.6.1.4.1.2011.5.25.183.1.30 hwStackUpgradeTable A table
1.3.6.1.4.1.2011.5.25.183.1.30.1.1 hwStackUpgradeIndex A table object
1.3.6.1.4.1.2011.5.25.183.1.30.1.2 hwStackUpgradeGrpType A table object
1.3.6.1.4.1.2011.5.25.183.1.30.1.3 hwStackUpgradeGrpValue A table object
1.3.6.1.4.1.2011.5.25.183.1.30.1.4 hwStackUpgradeFileType A table object
1.3.6.1.4.1.2011.5.25.183.1.30.1.5 hwStackUpgradeFileInfo A table object
1.3.6.1.4.1.2011.5.25.183.1.30.1.6 hwStackUpgradeFtpIp A table object
1.3.6.1.4.1.2011.5.25.183.1.30.1.7 hwStackUpgradeFtpUserName A table object
1.3.6.1.4.1.2011.5.25.183.1.30.1.8 hwStackUpgradeFtpPassword A table object
1.3.6.1.4.1.2011.5.25.183.1.30.1.9 hwStackUpgradeServerPort A table object
1.3.6.1.4.1.2011.5.25.183.1.30.1.10 hwStackUpgradeFileSize A table object
1.3.6.1.4.1.2011.5.25.183.1.30.1.11 hwStackUpgradeTransmitProtocol A table object
1.3.6.1.4.1.2011.5.25.183.1.30.1.51 hwStackUpgradeRowStatus A table object
1.3.6.1.4.1.2011.5.25.183.1.31 hwStackUpgradeResultTable A table
1.3.6.1.4.1.2011.5.25.183.1.31.1.1 hwStackUpgradeResultIndex A table object
1.3.6.1.4.1.2011.5.25.183.1.31.1.2 hwStackUpgradeResultMemberId A table object
1.3.6.1.4.1.2011.5.25.183.1.31.1.3 hwStackUpgradeResult A table object
1.3.6.1.4.1.2011.5.25.183.1.31.1.4 hwStackUpgradeResultInProcess A table object
1.3.6.1.4.1.2011.5.25.183.1.31.1.5 hwStackUpgradeResultFailReason A table object
1.3.6.1.4.1.2011.5.25.183.3.3.2.8 hwCssPhyCsuConnectError An alarm object
1.3.6.1.4.1.2011.5.25.183.3.3.2.9 hwCssLpuInvalidLicense An alarm object
1.3.6.1.4.1.2011.5.25.183.3.3.2.10 hwCssPortConfigureFailed An alarm object
Translation
Download
Updated: 2019-09-23

Document ID: EDOC1000178122

Views: 783649

Downloads: 36

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next