OID reference

lcsMSTIPortsTable

1.3.6.1.4.1.2356.14.2.18.6.2

Description

A table of MSTI ports.

Full description and source information

Identification

Identifier and names

Parent: 1.3.6.1.4.1.2356.14.2.18.6 (lcsMSTIPorts)
Node code: 2
Node name: lcsMSTIPortsTable
Category: SNMP management object
Numeric OID: 1.3.6.1.4.1.2356.14.2.18.6.2
URN notation: urn:oid:1.3.6.1.4.1.2356.14.2.18.6.2

ASN.1, OID-IRI and named path variants

ASN.1 notation

{1 3 6 1 4 1 2356 14 2 18 6 2}

{iso(1) identified-organization(3) dod(6) internet(1) private(4) enterprise(1) lancom-systems(2356) lcosSX(14) lcsConfiguration(2) lcsSpanningTree(18) lcsMSTIPorts(6) lcsMSTIPortsTable(2)}
{iso(1) identified-organization(3) dod(6) internet(1) private(4) enterprise(1) elsa(2356) lcosSX(14) lcsConfiguration(2) lcsSpanningTree(18) lcsMSTIPorts(6) lcsMSTIPortsTable(2)}
{iso(1) identified-organization(3) dod(6) internet(1) private(4) enterprise(1) lancomSystems(2356) lcosSX(14) lcsConfiguration(2) lcsSpanningTree(18) lcsMSTIPorts(6) lcsMSTIPortsTable(2)}
{iso(1) identified-organization(3) dod(6) internet(1) private(4) enterprises(1) lancom-systems(2356) lcosSX(14) lcsConfiguration(2) lcsSpanningTree(18) lcsMSTIPorts(6) lcsMSTIPortsTable(2)}
{iso(1) identified-organization(3) dod(6) internet(1) private(4) enterprises(1) elsa(2356) lcosSX(14) lcsConfiguration(2) lcsSpanningTree(18) lcsMSTIPorts(6) lcsMSTIPortsTable(2)}
{iso(1) identified-organization(3) dod(6) internet(1) private(4) enterprises(1) lancomSystems(2356) lcosSX(14) lcsConfiguration(2) lcsSpanningTree(18) lcsMSTIPorts(6) lcsMSTIPortsTable(2)}
{iso(1) identified-organization(3) dod(6) internet(1) private(4) ldap-enterprise(1) lancom-systems(2356) lcosSX(14) lcsConfiguration(2) lcsSpanningTree(18) lcsMSTIPorts(6) lcsMSTIPortsTable(2)}
{iso(1) identified-organization(3) dod(6) internet(1) private(4) ldap-enterprise(1) elsa(2356) lcosSX(14) lcsConfiguration(2) lcsSpanningTree(18) lcsMSTIPorts(6) lcsMSTIPortsTable(2)}
{iso(1) identified-organization(3) dod(6) internet(1) private(4) ldap-enterprise(1) lancomSystems(2356) lcosSX(14) lcsConfiguration(2) lcsSpanningTree(18) lcsMSTIPorts(6) lcsMSTIPortsTable(2)}
{iso(1) identified-organization(3) dod(6) internet(1) private(4) vendor-objects(1) lancom-systems(2356) lcosSX(14) lcsConfiguration(2) lcsSpanningTree(18) lcsMSTIPorts(6) lcsMSTIPortsTable(2)}
{iso(1) identified-organization(3) dod(6) internet(1) private(4) vendor-objects(1) elsa(2356) lcosSX(14) lcsConfiguration(2) lcsSpanningTree(18) lcsMSTIPorts(6) lcsMSTIPortsTable(2)}
{iso(1) identified-organization(3) dod(6) internet(1) private(4) vendor-objects(1) lancomSystems(2356) lcosSX(14) lcsConfiguration(2) lcsSpanningTree(18) lcsMSTIPorts(6) lcsMSTIPortsTable(2)}
{iso(1) org(3) dod(6) internet(1) private(4) enterprise(1) lancom-systems(2356) lcosSX(14) lcsConfiguration(2) lcsSpanningTree(18) lcsMSTIPorts(6) lcsMSTIPortsTable(2)}
{iso(1) org(3) dod(6) internet(1) private(4) enterprise(1) elsa(2356) lcosSX(14) lcsConfiguration(2) lcsSpanningTree(18) lcsMSTIPorts(6) lcsMSTIPortsTable(2)}
{iso(1) org(3) dod(6) internet(1) private(4) enterprise(1) lancomSystems(2356) lcosSX(14) lcsConfiguration(2) lcsSpanningTree(18) lcsMSTIPorts(6) lcsMSTIPortsTable(2)}
{iso(1) org(3) dod(6) internet(1) private(4) enterprises(1) lancom-systems(2356) lcosSX(14) lcsConfiguration(2) lcsSpanningTree(18) lcsMSTIPorts(6) lcsMSTIPortsTable(2)}
Additional combinations skipped.

OID-IRI notation

/1/3/6/1/4/1/2356/14/2/18/6/2
/ISO/Identified-Organization/6/1/4/1/2356/14/2/18/6/2
/ISO/3/6/1/4/1/2356/14/2/18/6/2

Named path variants

/iso/identified-organization/dod/internet/private/enterprise/ELSA/lcosSX/lcsConfiguration/lcsSpanningTree/lcsMSTIPorts/lcsMSTIPortsTable
/iso/identified-organization/dod/internet/private/enterprise/lancom-systems/lcosSX/lcsConfiguration/lcsSpanningTree/lcsMSTIPorts/lcsMSTIPortsTable
/iso/identified-organization/dod/internet/private/enterprise/elsa/lcosSX/lcsConfiguration/lcsSpanningTree/lcsMSTIPorts/lcsMSTIPortsTable
/iso/identified-organization/dod/internet/private/enterprise/lancomSystems/lcosSX/lcsConfiguration/lcsSpanningTree/lcsMSTIPorts/lcsMSTIPortsTable
/iso/identified-organization/dod/internet/private/enterprises/ELSA/lcosSX/lcsConfiguration/lcsSpanningTree/lcsMSTIPorts/lcsMSTIPortsTable
/iso/identified-organization/dod/internet/private/enterprises/lancom-systems/lcosSX/lcsConfiguration/lcsSpanningTree/lcsMSTIPorts/lcsMSTIPortsTable
/iso/identified-organization/dod/internet/private/enterprises/elsa/lcosSX/lcsConfiguration/lcsSpanningTree/lcsMSTIPorts/lcsMSTIPortsTable
/iso/identified-organization/dod/internet/private/enterprises/lancomSystems/lcosSX/lcsConfiguration/lcsSpanningTree/lcsMSTIPorts/lcsMSTIPortsTable
/iso/identified-organization/dod/internet/private/ldap-enterprise/ELSA/lcosSX/lcsConfiguration/lcsSpanningTree/lcsMSTIPorts/lcsMSTIPortsTable
/iso/identified-organization/dod/internet/private/ldap-enterprise/lancom-systems/lcosSX/lcsConfiguration/lcsSpanningTree/lcsMSTIPorts/lcsMSTIPortsTable
/iso/identified-organization/dod/internet/private/ldap-enterprise/elsa/lcosSX/lcsConfiguration/lcsSpanningTree/lcsMSTIPorts/lcsMSTIPortsTable
/iso/identified-organization/dod/internet/private/ldap-enterprise/lancomSystems/lcosSX/lcsConfiguration/lcsSpanningTree/lcsMSTIPorts/lcsMSTIPortsTable
/iso/identified-organization/dod/internet/private/vendor-objects/ELSA/lcosSX/lcsConfiguration/lcsSpanningTree/lcsMSTIPorts/lcsMSTIPortsTable
/iso/identified-organization/dod/internet/private/vendor-objects/lancom-systems/lcosSX/lcsConfiguration/lcsSpanningTree/lcsMSTIPorts/lcsMSTIPortsTable
/iso/identified-organization/dod/internet/private/vendor-objects/elsa/lcosSX/lcsConfiguration/lcsSpanningTree/lcsMSTIPorts/lcsMSTIPortsTable
/iso/identified-organization/dod/internet/private/vendor-objects/lancomSystems/lcosSX/lcsConfiguration/lcsSpanningTree/lcsMSTIPorts/lcsMSTIPortsTable
Additional combinations skipped.

SNMP properties

Value type: SEQUENCE OF LCSMSTIPortsEntry
Maximum access defined by MIB: not-accessible
Status in MIB: current

Properties come from available MIB definitions. Actual device support and access can differ. See source records below for original files and qualifications.

Published definition

The displayed source records contain one distinct definition. Compare its source records.

lcsMSTIPortsTable OBJECT-TYPE
   SYNTAX      SEQUENCE OF LCSMSTIPortsEntry
   MAX-ACCESS  not-accessible
   STATUS      current
   DESCRIPTION
       "A table of MSTI ports."
    ::= { lcsMSTIPorts 2 }

Meaning

Descriptions

1 unique

Identical descriptions are grouped. Different wording and device-specific notes are retained.

A table of MSTI ports.

Sources for this description

LANCOM official release MIBsLANCOM MIB copies (LibreNMS/Observium Community)

See 1 matching source record

Evidence

Source records

1 records

Matching descriptions are grouped; open a group to compare definitions and supporting files.

Records for description 1LANCOM official release MIBs, LANCOM MIB copies (LibreNMS/Observium Community)1 record · 23 sources

Description 1

lcsMSTIPortsTable · currentLANCOM official release MIBs, LANCOM MIB copies (LibreNMS/Observium Community)23 sources

Status in source: current.

Names: lcsMSTIPortsTable

Technical details

{
  "smi_kind": "OBJECT-TYPE",
  "definition": [
    "lcsMSTIPortsTable",
    "OBJECT-TYPE",
    "SYNTAX",
    "SEQUENCE",
    "OF",
    "LCSMSTIPortsEntry",
    "MAX-ACCESS",
    "not-accessible",
    "STATUS",
    "current",
    "DESCRIPTION",
    "\"A table of MSTI ports.\"",
    "::=",
    "{",
    "lcsMSTIPorts",
    "2",
    "}"
  ],
  "syntax_tree": [
    [
      "conceptualTable",
      [
        "row",
        "LCSMSTIPortsEntry"
      ]
    ],
    null,
    [
      "MaxAccessPart",
      "not-accessible"
    ],
    [
      "Status",
      "current"
    ],
    [
      "DESCRIPTION",
      "A table of MSTI ports."
    ],
    null,
    null,
    null,
    null
  ]
}

LANCOM official release MIBs · Publisher's source file: LC-GS-2412-4.30.0224-RU5.mib

Module: LCOS-SX-MIB

See published definition above

Module imports

{'IF-MIB': ['ifIndex'], 'RMON-MIB': ['OwnerString'], 'SNMPv2-TC': ['DisplayString', 'MacAddress', 'TEXTUAL-CONVENTION', 'RowStatus'], 'SNMPv2-SMI': ['enterprises', 'MODULE-IDENTITY', 'OBJECT-TYPE', 'NOTIFICATION-TYPE', 'Unsigned32', 'Integer32', 'Counter32', 'Counter64', 'IpAddress'], 'SNMPv2-CONF': ['MODULE-COMPLIANCE', 'OBJECT-GROUP', 'NOTIFICATION-GROUP'], 'Q-BRIDGE-MIB': ['dot1qTpFdbAddress', 'dot1qFdbId', 'dot1qTpFdbPort'], 'INET-ADDRESS-MIB': ['InetAddress', 'InetAddressType', 'InetPortNumber'], 'SNMP-FRAMEWORK-MIB': ['SnmpAdminString']}

· Download LC-GS-2412-4.30.0224-RU5.mib

Same file in LC-GS-3152X-4.30.0224-RU5.mib.

Same file in LC-GS-3126X-4.30.0224-RU5.mib.

Same file in LC-GS-3252P-4.30.0224-RU5.mib.

Same file in LC-GS-3652XUP-4.30.0224-RU5.mib.

LANCOM official release MIBs · Publisher's source file: LC-GS-2412-4.30.0302-RU6.mib

Module: LCOS-SX-MIB

Same published definition

Module imports

{'IF-MIB': ['ifIndex'], 'RMON-MIB': ['OwnerString'], 'SNMPv2-TC': ['DisplayString', 'MacAddress', 'TEXTUAL-CONVENTION', 'RowStatus'], 'SNMPv2-SMI': ['enterprises', 'MODULE-IDENTITY', 'OBJECT-TYPE', 'NOTIFICATION-TYPE', 'Unsigned32', 'Integer32', 'Counter32', 'Counter64', 'IpAddress'], 'SNMPv2-CONF': ['MODULE-COMPLIANCE', 'OBJECT-GROUP', 'NOTIFICATION-GROUP'], 'Q-BRIDGE-MIB': ['dot1qTpFdbAddress', 'dot1qFdbId', 'dot1qTpFdbPort'], 'INET-ADDRESS-MIB': ['InetAddress', 'InetAddressType', 'InetPortNumber'], 'SNMP-FRAMEWORK-MIB': ['SnmpAdminString']}

· Download LC-GS-2412-4.30.0302-RU6.mib

Same file in LC-GS-3628X-4.30.0302-RU6.mib.

Same file in LC-GS-2426-4.30.0302-RU6.mib.

Same file in LC-XS-3550YUP-4.30.0302-RU6.mib.

Same file in LC-GS-2412P-4.30.0302-RU6.mib.

LANCOM official release MIBs · Publisher's source file: LC-GS-2412-4.30.0434-RU7.mib

Module: LCOS-SX-MIB

Same published definition

Module imports

{'IF-MIB': ['ifIndex'], 'RMON-MIB': ['OwnerString'], 'SNMPv2-TC': ['DisplayString', 'MacAddress', 'TEXTUAL-CONVENTION', 'RowStatus'], 'SNMPv2-SMI': ['enterprises', 'MODULE-IDENTITY', 'OBJECT-TYPE', 'NOTIFICATION-TYPE', 'Unsigned32', 'Integer32', 'Counter32', 'Counter64', 'IpAddress'], 'SNMPv2-CONF': ['MODULE-COMPLIANCE', 'OBJECT-GROUP', 'NOTIFICATION-GROUP'], 'Q-BRIDGE-MIB': ['dot1qTpFdbAddress', 'dot1qFdbId', 'dot1qTpFdbPort'], 'INET-ADDRESS-MIB': ['InetAddress', 'InetAddressType', 'InetPortNumber'], 'SNMP-FRAMEWORK-MIB': ['SnmpAdminString']}

· Download LC-GS-2412-4.30.0434-RU7.mib

Same file in LC-GS-3510XP-4.30.0438-RU8.mib.

Same file in LC-GS-3628XP-4.30.0434-RU7.mib.

Same file in LC-GS-3126X-4.30.0438-RU8.mib.

Same file in LC-GS-3528X-4.30.0438-RU8.mib.

LANCOM official release MIBs · Publisher's source file: LC-GS-2412-4.30.0502-RU10.mib

Module: LCOS-SX-MIB

Same published definition

Module imports

{'IF-MIB': ['ifIndex'], 'RMON-MIB': ['OwnerString'], 'SNMPv2-TC': ['DisplayString', 'MacAddress', 'TEXTUAL-CONVENTION', 'RowStatus'], 'SNMPv2-SMI': ['enterprises', 'MODULE-IDENTITY', 'OBJECT-TYPE', 'NOTIFICATION-TYPE', 'Unsigned32', 'Integer32', 'Counter32', 'Counter64', 'IpAddress'], 'SNMPv2-CONF': ['MODULE-COMPLIANCE', 'OBJECT-GROUP', 'NOTIFICATION-GROUP'], 'Q-BRIDGE-MIB': ['dot1qTpFdbAddress', 'dot1qFdbId', 'dot1qTpFdbPort'], 'INET-ADDRESS-MIB': ['InetAddress', 'InetAddressType', 'InetPortNumber'], 'SNMP-FRAMEWORK-MIB': ['SnmpAdminString']}

· Download LC-GS-2412-4.30.0502-RU10.mib

Same file in LC-GS-3528X-4.30.0502-RU10.mib.

Same file in LC-XS-3510YUP-4.30.0502-RU10.mib.

Same file in LC-GS-3126X-4.30.0502-RU10.mib.

Same file in LC-GS-3126XP-4.30.0502-RU10.mib.

LANCOM official release MIBs · Publisher's source file: LC-GS-3126X-4.00.0219-SU3.mib
Module: LCOS-SX-MIB

Same published definition
Module imports
```
{'IF-MIB': ['ifIndex'], 'RMON-MIB': ['OwnerString'], 'SNMPv2-TC': ['DisplayString', 'MacAddress', 'TEXTUAL-CONVENTION', 'RowStatus'], 'SNMPv2-SMI': ['enterprises', 'MODULE-IDENTITY', 'OBJECT-TYPE', 'NOTIFICATION-TYPE', 'Unsigned32', 'Integer32', 'Counter32', 'Counter64', 'IpAddress'], 'SNMPv2-CONF': ['MODULE-COMPLIANCE', 'OBJECT-GROUP', 'NOTIFICATION-GROUP'], 'INET-ADDRESS-MIB': ['InetAddress', 'InetAddressType'], 'SNMP-FRAMEWORK-MIB': ['SnmpAdminString']}
```
Source data warning: The publisher uses a lowercase row/type name. Preserve this literal type reference and every numeric OID; do not silently change its spelling.
· Download LC-GS-3126X-4.00.0219-SU3.mib
Same file in LC-GS-3152X-4.00.0212-RU2.mib.
Same file in LC-GS-3528X-4.00.0219-SU3.mib.
Same file in LC-GS-3152XSP-4.00.0212-RU2.mib.
Same file in LC-GS-3528XP-4.00.0212-RU2.mib.

LANCOM official release MIBs · Publisher's source file: LC-GS-3126X-4.00.0261-RU4.mib

Module: LCOS-SX-MIB

Same published definition

Module imports

{'IF-MIB': ['ifIndex'], 'RMON-MIB': ['OwnerString'], 'SNMPv2-TC': ['DisplayString', 'MacAddress', 'TEXTUAL-CONVENTION', 'RowStatus'], 'SNMPv2-SMI': ['enterprises', 'MODULE-IDENTITY', 'OBJECT-TYPE', 'NOTIFICATION-TYPE', 'Unsigned32', 'Integer32', 'Counter32', 'Counter64', 'IpAddress'], 'SNMPv2-CONF': ['MODULE-COMPLIANCE', 'OBJECT-GROUP', 'NOTIFICATION-GROUP'], 'INET-ADDRESS-MIB': ['InetAddress', 'InetAddressType'], 'SNMP-FRAMEWORK-MIB': ['SnmpAdminString']}

· Download LC-GS-3126X-4.00.0261-RU4.mib

Same file in LC-GS-3528X-4.00.0261-RU4.mib.

Same file in LC-GS-3152X-4.00.0261-RU4.mib.

Same file in LC-GS-3510XP-4.00.0261-RU4.mib.

Same file in LC-GS-3152XP-4.00.0261-RU4.mib.

LANCOM official release MIBs · Publisher's source file: LC-GS-3126X-4.00.0305-RU5.mib

Module: LCOS-SX-MIB

Same published definition

Module imports

{'IF-MIB': ['ifIndex'], 'RMON-MIB': ['OwnerString'], 'SNMPv2-TC': ['DisplayString', 'MacAddress', 'TEXTUAL-CONVENTION', 'RowStatus'], 'SNMPv2-SMI': ['enterprises', 'MODULE-IDENTITY', 'OBJECT-TYPE', 'NOTIFICATION-TYPE', 'Unsigned32', 'Integer32', 'Counter32', 'Counter64', 'IpAddress'], 'SNMPv2-CONF': ['MODULE-COMPLIANCE', 'OBJECT-GROUP', 'NOTIFICATION-GROUP'], 'INET-ADDRESS-MIB': ['InetAddress', 'InetAddressType'], 'SNMP-FRAMEWORK-MIB': ['SnmpAdminString']}

· Download LC-GS-3126X-4.00.0305-RU5.mib

Same file in LC-GS-3528X-4.00.0333-RU6.mib.

Same file in LC-GS-3152XSP-4.00.0333-RU6.mib.

Same file in LC-GS-3152XP-4.00.0333-RU6.mib.

Same file in LC-GS-3152XSP-4.00.0305-RU5.mib.

LANCOM official release MIBs · Publisher's source file: LC-GS-3126X-4.00.0349-RU7.mib

Module: LCOS-SX-MIB

Same published definition

Module imports

{'IF-MIB': ['ifIndex'], 'RMON-MIB': ['OwnerString'], 'SNMPv2-TC': ['DisplayString', 'MacAddress', 'TEXTUAL-CONVENTION', 'RowStatus'], 'SNMPv2-SMI': ['enterprises', 'MODULE-IDENTITY', 'OBJECT-TYPE', 'NOTIFICATION-TYPE', 'Unsigned32', 'Integer32', 'Counter32', 'Counter64', 'IpAddress'], 'SNMPv2-CONF': ['MODULE-COMPLIANCE', 'OBJECT-GROUP', 'NOTIFICATION-GROUP'], 'INET-ADDRESS-MIB': ['InetAddress', 'InetAddressType'], 'SNMP-FRAMEWORK-MIB': ['SnmpAdminString']}

· Download LC-GS-3126X-4.00.0349-RU7.mib

Same file in LC-GS-3510XP-4.00.0349-RU7.mib.

Same file in LC-GS-3528X-4.00.0349-RU7.mib.

Same file in LC-GS-3152P-4.00.0349-RU7.mib.

Same file in LC-GS-3152XP-4.00.0349-RU7.mib.

LANCOM official release MIBs · Publisher's source file: LC-GS-3126X-4.00.0414-RU8.mib

Module: LCOS-SX-MIB

Same published definition

Module imports

{'IF-MIB': ['ifIndex'], 'RMON-MIB': ['OwnerString'], 'SNMPv2-TC': ['DisplayString', 'MacAddress', 'TEXTUAL-CONVENTION', 'RowStatus'], 'SNMPv2-SMI': ['enterprises', 'MODULE-IDENTITY', 'OBJECT-TYPE', 'NOTIFICATION-TYPE', 'Unsigned32', 'Integer32', 'Counter32', 'Counter64', 'IpAddress'], 'SNMPv2-CONF': ['MODULE-COMPLIANCE', 'OBJECT-GROUP', 'NOTIFICATION-GROUP'], 'Q-BRIDGE-MIB': ['dot1qTpFdbAddress', 'dot1qFdbId', 'dot1qTpFdbPort'], 'INET-ADDRESS-MIB': ['InetAddress', 'InetAddressType'], 'SNMP-FRAMEWORK-MIB': ['SnmpAdminString']}

· Download LC-GS-3126X-4.00.0414-RU8.mib

Same file in LC-GS-3126XP-4.00.0414-RU8.mib.

Same file in LC-GS-3152P-4.00.0414-RU8.mib.

Same file in LC-GS-3152X-4.00.0414-RU8.mib.

Same file in LC-GS-3152XP-4.00.0414-RU8.mib.

LANCOM official release MIBs · Publisher's source file: LC-GS-3126X-4.00.0501-RU9.mib

Module: LCOS-SX-MIB

Same published definition

Module imports

{'IF-MIB': ['ifIndex'], 'RMON-MIB': ['OwnerString'], 'SNMPv2-TC': ['DisplayString', 'MacAddress', 'TEXTUAL-CONVENTION', 'RowStatus'], 'SNMPv2-SMI': ['enterprises', 'MODULE-IDENTITY', 'OBJECT-TYPE', 'NOTIFICATION-TYPE', 'Unsigned32', 'Integer32', 'Counter32', 'Counter64', 'IpAddress'], 'SNMPv2-CONF': ['MODULE-COMPLIANCE', 'OBJECT-GROUP', 'NOTIFICATION-GROUP'], 'Q-BRIDGE-MIB': ['dot1qTpFdbAddress', 'dot1qFdbId', 'dot1qTpFdbPort'], 'INET-ADDRESS-MIB': ['InetAddress', 'InetAddressType'], 'SNMP-FRAMEWORK-MIB': ['SnmpAdminString']}

· Download LC-GS-3126X-4.00.0501-RU9.mib

Same file in LC-GS-3528XP-4.00.0501-RU9.mib.

Same file in LC-GS-3152XSP-4.00.0501-RU9.mib.

Same file in LC-GS-3152XP-4.00.0501-RU9.mib.

Same file in LC-GS-3152P-4.00.0501-RU9.mib.

Browse all 23 supporting sources

Registration

Registration authorities

First Registration Authority (inferred from ancestor 1.3.6.1.4.1.2356)

Udo Brocker

Direct children (1)

OID	Name	Direct children	Descendants	Description
1.3.6.1.4.1.2356.14.2.18.6.2.1	lcsMSTIPortsEntry	4	4

Siblings (1)

OID	Name	Direct children	Descendants	Description
1.3.6.1.4.1.2356.14.2.18.6.1	lcsMSTIAggregatedPortsTable	1	4