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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 the Interface Rate

Configuring the Interface Rate

Context

You can configure the Ethernet interface rate in either auto-negotiation or non-auto-negotiation mode.

  • In auto-negotiation mode, the interface rate is negotiated by the interfaces on two ends of a link.

    • If the negotiated interface rate does not comply with the actual requirement, you can manually configure the rate.

      As shown in Figure 2-1, the network adapter rates on Server1, Server2, and Server3 that form a server cluster are all 1000 Mbit/s, and the rate of GE1/0/4 connecting the server cluster to external networks is also 1000 Mbit/s. If the auto-negotiation rate is not specified on the device, the rates negotiated by GE1/0/1, GE1/0/2, and GE1/0/3 with their connected servers are all 1000 Mbit/s. When the servers send data at the rate of 1000 Mbit/s concurrently, the outbound interface GE1/0/4 may be blocked. In this case, you can configure the auto-negotiation rate to 100 Mbit/s for GE1/0/1, GE1/0/2, and GE1/0/3, preventing the outbound interface from being blocked.

      Figure 2-1 Networking diagram for configuring the interface auto-negotiation rate

  • When the peer device does not support auto-negotiation, you can configure the local device to work in non-auto negotiation mode and configure the interface rate, ensuring communication between the local and peer devices.
NOTE:
  • For the interface rate supported by Ethernet interfaces, see Interface Query Tool.

  • When you configure the Ethernet interface rate, ensure that the same interface rate is configured for the two ends.

Procedure

  • In the auto-negotiation mode
    1. Run system-view

      The system view is displayed.

    2. Run interface interface-type interface-number

      The Ethernet interface view is displayed.

    3. Configuring the interface rate

      • GE electrical interface

        Run speed auto { 10 | 100 | 1000 }*

        The rate auto-negotiation function is configured for the GE electrical interface.

      • 10GE electrical interface

        Run speed auto { 100 | 1000 | 10000 }*

        The rate auto-negotiation function is configured for the 10GE electrical interface.

    4. Run commit

      The configuration is committed.

  • In the non-auto-negotiation mode
    1. Run system-view

      The system view is displayed.

    2. Run interface interface-type interface-number

      The Ethernet interface view is displayed.

    3. (Optional) Run negotiation disable

      The Ethernet interface is configured to work in non-auto-negotiation mode.

      If the interface work in auto-negotiation mode, perform this step, otherwise, skip this step.

    4. Configuring the interface rate

      • GE electrical interface and GE or 10GE optical interface where a GE copper module is installed

        Run speed { 10 | 100 | 1000 }

        The rate of the GE electrical interface is configured.

      • 10GE electrical interface

        Run speed { 100 | 1000 | 10000 }

        The rate of the 10GE electrical interface is configured.

      • 10GE optical interface

        1. Run quit

          Return to the system view.

        2. Run port mode 25ge interface { interface-type interface-number [ to { interface-type interface-number } ] } &<1-18>

          The 10GE interface is configured to work at the rate of 25 Gbit/s.

        NOTE:

        Only 10GE optical interfaces on the CE-L48XS-FD1 card support this command. If a 25GE medium whose rate cannot be adjusted is installed on a 10GE interface, the interface goes Up only after this command is run. If a 25GE medium whose rate can be adjusted is installed on a 10GE interface, the interface works at the rate of 10 Gbit/s by default. After the port mode 25ge command is run, the working rate of the interface is switched to 25 Gbit/s.

      • 25GE optical interface

        Run port mode 10g

        The 25GE optical interface is configured to work at the rate of 10 Gbit/s.

        NOTE:

        A QSFP28 interface can be split into four 25GE interfaces. If a 100GE 1-to-4 medium whose rate can be adjusted is installed on the QSFP28 interface, the four 25GE interfaces work at the rate of 10 Gbit/s after this command is run. If a 40GE 1-to-4 medium whose rate can be adjusted is installed on the QSFP28 interface, the four 25GE interfaces automatically work at the rate of 10 Gbit/s without the need of running this command.

      • 40GE optical interface

        1. Run quit

          Return to the system view.

        2. Run port mode 100ge interface { interface-type interface-number [ to { interface-type interface-number } ] } &<1-18>

          The 40GE interface is configured to work at the rate of 100 Gbit/s.

        NOTE:

        Only 40GE optical interfaces on the CEL36LQ-E series cards, CE-L36LQ-FD and CE-L24LQ-FD cards support this command. If a 100GE medium is installed on a 40GE optical interface, the interface goes Up only after this command is run.

      • 100GE QSFP28 optical interface

        Run speed 40000

        The rate of the 100GE optical interface is configured.

        For the CE12800E, QSFP28 optical interfaces do not support the speed 40000 command. For other switches, only when the QSFP28 high-speed cable is installed, the speed 40000 command is supported.

    5. Run commit

      The configuration is committed.

    By default, an Ethernet interface works at its maximum rate.

Verifying the Configuration

Run the display interface [ interface-type [ interface-number ] ] command in any view or the display this interface command in the interface view to check the current interface status. For details, check the Speed field in the command output.

Translation
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Updated: 2019-05-05

Document ID: EDOC1100004195

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