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Configuration Guide - Interface Management

CloudEngine 12800 and 12800E V200R003C00

This document describes the interface management configuration, including basic interface configuration, Ethernet interface configuration, and logical interface configuration.

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Configuring Interface Split

Configuring Interface Split

Context

The interface split function allows a high-bandwidth physical interface on the card to be configured as multiple independent low-bandwidth interfaces. With the interface split function, interfaces on a card can connect to various types of interfaces on the remote device, allowing for flexible networking and lowering hardware costs.

Interface Split Types and Precautions

Table 2-7 and Table 2-8 show interface split types and precautions of 40GE and 100GE interfaces on CloudEngine 12800 and 12800E Series switches. For details about cables used on converted interfaces, see "Indicators and Ports" of the corresponding card in the CloudEngine 12800 and 12800E Series Switches Hardware Description.

The interface view is not changed after an interface is split. For example, if 40GE x/y/n is split into four 10GE interfaces, the view of the converted interfaces is still the 40GE interface view, and the converted interfaces are numbered 40GE x/y/n:1, 40GE x/y/n:2, 40GE x/y/n:3, and 40GE x/y/n:4.

When configuring interface split, pay attention to the following points:
  • After configuring or canceling interface split on an interface, the interface will not exist and the original configuration on the interface will be lost. If you run the rollback configuration command to roll back the configuration to that before the interface split, the original configuration on the interface will not be restored, and you need to manually perform the configuration again. Therefore, exercise caution when deciding to roll back the configuration.

  • If a 40GE or 100GE interface has been added to a stack interface or allocated to an Admin-VS, the 40GE or 100GE interface cannot be split. An interface can be split only after it returns to the Admin-VS. If you configure interface split on an interface and allocate a converted interface to a VS, the configuration of the converted interface is not affected.
  • If a 40GE interface is not split and is connected to four 10GE interfaces on the remote device using a 1-to-4 cable, the 40GE interface cannot go Up and the interface indicator is off. The four 10GE interfaces on the remote device may go Up and the interface indicators are steady on. However, the interfaces cannot work properly. After interface split is correctly configured, the interfaces can work properly.

NOTE:

It is recommended that you use the Interface Split Query Tool when configuring the interface split function. This tool provides details about interface split types supported by CE series switches, cables used on converted interfaces, configuration procedure, and precautions.

Table 2-7 Interface split configuration on 40GE interfaces

Card Type

Interface Split Type

Description

CE-L02LQ-EC/CE-L06LQ-EC/CE-L36LQ-EG

4*10GE

-

CE-L12LQ-EF

4*10GE

After interface split is enabled on a CE-L12LQ-EF card, the twelve 40GE interfaces on the card are split into forty-eight 10GE interfaces. If the CE-L12LQ-EF card is replaced by a 48*10G card and the dimension numbering rule is used, converted 10GE interfaces on the original card and 10GE interfaces on the new card are numbered in different ways. Therefore, the configurations on the converted 10GE interfaces are not automatically delivered to 10GE interfaces on the new card. If the interface sequence numbering rule is used, converted 10GE interfaces on the original card and 10GE interfaces on the new card are numbered in the same way. Therefore, the configurations on the converted 10GE interfaces are automatically delivered to 10GE interfaces on the new card.

CE-L24LQ-EA/EC/EC1

4*10GE

If a CE-L24LQ-EA card with effective 40GE interface split configuration is replaced by another CE-L24LQ-EA card, the original interface split configuration takes effect on corresponding interfaces of the new card and the service configuration on the converted 10GE interfaces is retained. The switch automatically delivers the configuration to the new card without manual intervention. However, the new card takes a longer time to start than other cards.

CE-L48XS-FDA

2*10GE

The two 40GE interfaces must be split simultaneously so that converted 10GE interfaces can work properly.

CE-L24LQ-FD/CE-L36LQ-FD

4*10GE (Install a 40GE medium.)

-

CEL24XSEGA-E/CEL48XSEGA-E/CEL36LQ-E

4*10GE (Install a 40GE medium.)

-

Table 2-8 Interface split configuration on 100GE interfaces

Card Type

Interface Split Type

Description

CE-L04CF-EF/EC

  • 10*10GE
  • 8*10GE
  • 2*40GE
  • 1*40GE

After a minimum of one 100GE interface is split into ten 10GE interfaces, the extended TCAM resources on the CE-L04CF-EF card cannot be used.

CE-L08CC-EC

  • 3*40GE
  • 12*10GE

-

CE-L12CF-EG

  • 2*40GE
  • 8*10GE

If a 100GE interface of the CE-L12CF-EG card connects to a CFP-100G-LR4 optical module, the 100GE interface cannot be split into eight 10GE interfaces.

CE-L36CQ-FG, CE-L16CQ-FD, CE-L36CQ-FD, CE-L12CQ-FD

4*25GE

After a 100GE interface is split into four 25GE interfaces and has a 40GE medium installed, the four 25GE interfaces automatically work as four 10GE interfaces.

CE-L48XS-FDA

4*25GE

After a 100GE interface is split into four 25GE interfaces, a 40GE medium cannot be installed on the interface; otherwise, the four 25GE interfaces do not go Up.

CE-L36LQ-FD/CE-L24LQ-FD

4*25GE (Configure the port mode 100ge command and install a 100GE medium.)

After a 100GE interface is split into four 25GE interfaces and has a 40GE medium installed, the four 25GE interfaces automatically work as four 10GE interfaces.

CEL16CQEG-E

4*10GE (Install a 40GE medium.)

Configure the split-type to 4*10GE.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run port split dimension interface { interface-type interface-number1 [ to interface-type interface-number2 ] } &<1-18> [ split-type split-type ]

    Interface split is configured.

    By default, an interface is not split.

    In versions earlier than V100R003C00, converted interfaces are numbered using only the interface sequence numbering rule. In V100R003C00 and later versions, converted interfaces are numbered using only the dimension numbering rule.
    • If the system software is upgraded from a version earlier than V100R003C00 to V100R003C00 or a later version, the original converted interfaces still work properly. To configure interface split again, you must run the port split refresh command to update the interface numbering rule first.
    • If the system software version is downgraded from V100R003C00 or a later version to a version earlier than V100R003C00, the interface split configuration will be lost.
    NOTE:

    after the port split command is run, an interface is split, is in Offline state, and supports service configurations. Converted interfaces go Up after the card restarts and the configurations delivered when the split interface is in Offline state take effect.

  3. Run commit

    The configuration is committed.

  4. Run quit

    Return to the user view.

  5. Run save

    The current configuration is saved.

  6. Run reset slot slot-id

    The card is restarted to make the numbering rule of converted interfaces take effect.

    NOTE:

    This step is required for cards that do not support dynamic interface split.

Verifying the Configuration

Run the display port split [ slot slot-id ] command to check interface split information.

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Updated: 2019-05-05

Document ID: EDOC1100004195

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