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Configuration Guide - Ethernet Switching

S7700 and S9700 V200R012C00

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, VLANs, VLAN aggregation, MUX VLAN, VLAN termination, Voice VLAN, VLAN mapping, QinQ, GVRP, VCMP, STP/RSTP/MSTP, VBST, SEP, RRPP, ERPS, LBDT, HVRP, and Layer 2 protocol transparent transmission.
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A VLANIF Interface Goes Down

A VLANIF Interface Goes Down

Fault Symptom

A VLANIF interface goes Down.

Common Causes and Solutions

Table 4-10 describes common causes and solutions.

Table 4-10  Common causes and solutions for the VLANIF interface going down

Common Cause

Solution

The VLAN corresponding to the VLANIF interface is not created.

Run the vlan vlan-id command to create a VLAN corresponding to the VLANIF interface.

The interface is not added to the VLAN.

NOTE:
  • The port trunk pvid vlan vlan-id command only configures the PVID on a trunk interface, but does not add a trunk interface to a VLAN.
  • The port hybrid pvid vlan vlan-id command only configures the PVID on a hybrid interface, but does not add a hybrid interface to a VLAN.
Run the following commands as required.
  • Run the port default vlan vlan-id [ step step-number [ increased | decreased ] ] command in the interface view to add an access interface to a VLAN.
  • Run the port trunk allow-pass vlan { { vlan-id1 [ to vlan-id2 ] }&<1-10> | all } command in the interface view to add a trunk interface to a VLAN.
  • You can add a hybrid interface to a VLAN in tagged or untagged mode. Run the port hybrid tagged vlan { { vlan-id1 [ to vlan-id2 ] }&<1-10> | all } command to add a hybrid interface to a VLAN in tagged mode, or run the port hybrid untagged vlan { { vlan-id1 [ to vlan-id2 ] }&<1-10> | all } command to add a hybrid interface to a VLAN in untagged mode.

The physical status of all interfaces added to the VLAN is Down.

A VLANIF interface only goes Up when at least one interface in the VLAN is Up.

No IP address is assigned to the VLANIF interface.

Run the ip address command in the VLANIF interface view to assign an IP address to the VLANIF interface.

The VLANIF interface is shut down.

Run the undo shutdown command in the VLANIF interface view to start the VLANIF interface.

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Updated: 2019-01-18

Document ID: EDOC1100038843

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