No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

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.
Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Configuring a DFS Group

Configuring a DFS Group

Context

A Dynamic Fabric Service (DFS) group is used for device pairing. A DFS group needs to be bound to an IP address so that DFS master and backup devices can exchange Dual-Active Detection (DAD) packets. The bound IP address is used for communication with the remote end.

When a device is dual-homed to PEs on an Ethernet, a VXLAN, or an IP network, you need to bind the DFS group to an IP address. Ensure that IP addresses have been configured for Layer 3 interfaces on the two PEs and the two PEs can communicate. If the device is connected to a VPN network, you also need to bind the DFS group to a VPN instance. Ensure that the VPN instance has been created on the device.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run dfs-group dfs-group-id

    A DFS group is created and its view is displayed, or the view of an existing DFS group is displayed.

  3. Bind the DFS group to an IP address based on the actual scenario.

    When a device is dual-homed to PEs on an Ethernet, a VXLAN, or an IP network, bind the DFS group to an IP address. Run either of the following commands. The commands cannot be configured simultaneously.

    • Run source ip ip-address [ vpn-instance vpn-instance-name ]

      The DFS group is bound to an IPv4 address and a VPN instance.

    • Run source ipv6 ipv6-address [ vpn-instance vpn-instance-name ]

      The DFS group is bound to an IPv6 address and a VPN instance.

  4. (Optional) Run priority priority

    The priority of the DFS group is set.

    The priority of a DFS group is used for master/backup negotiation between two devices. A larger value indicates a higher priority of the device. The device with a higher priority is the master device.

    If the priorities of two devices are the same, the device with a smaller MAC address is the master device.

    By default, the priority of a DFS group is 100.

  5. (Optional) Run m-lag up-delay value [ auto-recovery interval interval-time ]

    The delay for the M-LAG member interface to report the Up event is set.

    To ensure the revertive switching performance, the default delay for the M-LAG member interface to report the Up event is 120s, and the automatic recovery interval is not configured in scenarios such as switch restart or peer-link fault recovery.

  6. (Optional) Run set lacp system-id switch-delay { switch-delay-time | immediately }

    The delay in switching the LACP M-LAG system ID is set.

    By default, the LACP M-LAG system ID is not switched. The immediately parameter indicates that the LACP M-LAG system ID is switched immediately. When the value of the switch-delay-time parameter is 0, the LACP M-LAG system ID is not switched.

  7. (Optional) Run authentication-mode hmac-sha256 password password

    The authentication mode and password of DFS group synchronization packets are configured.

    By default, the authentication mode of DFS group synchronization packets is not configured.

  8. (Optional) Run dfs-master led enable

    The stack status indicator is enabled to display the DFS group master and backup status.

    By default, the stack status indicator does not display the DFS group master and backup status.

    After the stack status indicator is enabled to display the DFS group master and backup status, the stack status indicator on the DFS master device is steady on and that on the DFS backup device is off.

  9. (Optional) Run dual-active detection error-down { delay delay-time | disable }

    Disables or delays the action of changing interfaces excluding the management interface, peer-link interface, and stack interface on the backup device to Error-Down state when the peer-link fails but the DAD heartbeat status is normal.

    By default, interfaces excluding the management interface, peer-link interface, and stack interface on the backup device change to Error-Down state when the peer-link fails but the DAD heartbeat status is normal.

    When an access device is single-homed to M-LAG master and backup devices using Layer 3 access mode, traffic forwarding on the backup device is not affected in a dual-active scenario where the peer-link fails but the DAD heartbeat status is normal. To prevent packet loss, you can run the dual-active detection error-down command to disable or delay the action of changing interfaces excluding the management interface, peer-link interface, and stack interface on the backup device to Error-Down state when the peer-link fails but the DAD heartbeat status is normal.

    When an access device is connected to M-LAG master and backup devices using M-LAG dual-homing access mode or Layer 2 access mode, you cannot disable or delay the Error-Down action.

  10. Run commit

    The configuration is committed.

Translation
Download
Updated: 2019-05-08

Document ID: EDOC1100004351

Views: 117561

Downloads: 290

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next