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Configuration Guide - Ethernet Switching

CloudEngine 8800, 7800, 6800, and 5800 V200R003C00

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, VLANs, MUX VLAN, Voice VLAN, VLAN mapping, QinQ, GVRP, VCMP, STP/RSTP/MSTP, VBST, SEP, RRPP, ERPS, LBDT, and Layer 2 protocol transparent transmission.
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Configuring Layer 3 Sub-interfaces for Inter-VLAN Communication

Configuring Layer 3 Sub-interfaces for Inter-VLAN Communication

Context

Users belong to different VLANs and are located on different network segments can communicate with each other by configuring Layer 3 sub-interfaces.

NOTE:

To implement communication between VLANs, hosts in each VLAN must use the IP address of the corresponding Layer 3 sub-interface as the gateway address.

NOTE:

The CE6810LI does not support configuring Layer 3 sub-interfaces.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The interface view is displayed.

  3. On an Ethernet interface, run undo portswitch

    The interface is switched to Layer 3 mode.

    By default, an Ethernet interface works in Layer 2 mode.

    The mode switching function takes effect when the interface only has attribute configurations (for example, shutdown and description configurations). Alternatively, if configuration information supported by both Layer 2 and Layer 3 interfaces exists (for example, mode lacp and lacp system-id configurations), no configuration that is not supported after the working mode of the interface is switched can exist. If unsupported configurations exist on the interface, delete the configurations first and then run the undo portswitch command.

    NOTE:

    If many Ethernet interfaces need to be switched to Layer 3 mode, run the undo portswitch batch interface-type { interface-number1 [ to interface-number2 ] } &<1-10> command in the system view to switch these interfaces to Layer 3 mode in batches.

  4. Run quit

    Return to the system view.

  5. Run interface interface-type interface-number.subinterface-number

    The Layer 3 sub-interface view is displayed.

  6. Run ip address ip-address { mask | mask-length } [ sub ]

    The IP address of the Layer 3 sub-interface is set.

  7. Run dot1q termination vid pe-vid

    The VLANs allowed by the dot1q Layer 3 sub-interface are specified.

    Each Layer 3 sub-interface can terminate only one VLAN tag.

    Layer 3 sub-interfaces of different main interfaces can be associated with the same VLAN ID. However, different Layer 3 sub-interfaces of the same main interface cannot be associated with the same VLAN ID.

  8. Run commit

    The configuration is committed.

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Updated: 2019-05-08

Document ID: EDOC1100004351

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