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

S2700, S3700, S5700, S6700, S7700, and S9700 Series Switches Interoperation and Replacement Guide

This document provides typical configuration examples for interoperation between Huawei switches and mainstream IP phones, firewalls, routers, Microsoft NLB servers, multi-NIC servers, Cisco switches, and SolarWinds.
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).
Interoperation and Replacement Solution 1: Huawei Switches Transparently Transmit Cisco PVST and STP BPDUs

Interoperation and Replacement Solution 1: Huawei Switches Transparently Transmit Cisco PVST and STP BPDUs

Overview

Huawei switches transparently transmit Cisco PVST and STP BPDUs to remove loops between Cisco switches or on themselves.

Networking Requirements

In Figure 5-15, all switches are Cisco switches. Layer 3 switches establish a virtual switching system (VSS) to implement connectivity. Two aggregation switches establish a port channel in manual mode to provide link redundancy. They are configured with OSPF and establish OSPF relationships with core switches to receive and transmit routes, and are configured with the Hot Standby Router Protocol (HSRP) to implement virtual gateway backup. Switches are enabled with PVST to remove loops.

Huawei switches need to replace the two aggregation switches, without changing the network plan.

Figure 5-15  Networking where Huawei switches transparently transmit Cisco PVST and STP BPDUs

Configuration Roadmap

  1. Configure OSPF on Huawei switches to establish OSPF relationships with core switches to receive and transmit routes.

  2. Configure link aggregation in manual mode on Huawei switches to implement load balancing.

  3. Configure VRRP on Huawei switches to interwork with and replace HSRP on Cisco switches. VRRP implements virtual gateway backup.

  4. Configure Huawei switches to transparently transmit Cisco PVST and STP BPDUs to remove loops between Cisco switches or on themselves.

    1. Disable STP on Huawei switches.

    2. Configure Huawei switches to transparently transmit Cisco PVST and STP BPDUs.

  5. Configure service forwarding on Huawei switches based on the original network plan.

Procedure

During migration, connect Huawei switches in bypass mode and establish OSPF routes. Migrate services on access switches to Huawei switches one by one.

  1. Check the configuration of Cisco switches before the replacement.

    1. Run the show running-config command to check the spanning tree configuration on Cisco switches.

    2. Run the show spanning-tree summary command to check spanning tree parameters and status information on Cisco switches.

    Cisco switches use PVST to calculate spanning trees.

  2. Power on two Huawei switches, and connect links between them and their uplinks. Configure addresses for downlink interfaces of core switches, and configure addresses for uplink interfaces and loopback addresses on Huawei switches. Complete the configuration on Huawei switches, and shut down VLANIF 10 and VLANIF 20 on HuaweiA and HuaweiB. Retain the configuration of Cisco switches.

    1. Disable STP on HuaweiA and HuaweiB.

      # Configure HuaweiA.

      <HUAWEI> system-view
      [HUAWEI] sysname HuaweiA
      [HuaweiA] stp disable
      

      # Configure HuaweiB.

      <HUAWEI> system-view
      [HUAWEI] sysname HuaweiB
      [HuaweiB] stp disable
      
    2. Configure Huawei switches to transparently transmit Cisco PVST and STP BPDUs.

      # Configure HuaweiA.

      [HuaweiA] interface eth-trunk 1
      [HuaweiA-Eth-Trunk1] l2protocol-tunnel PVST+ enable
      [HuaweiA-Eth-Trunk1] l2protocol-tunnel STP enable
      [HuaweiA-Eth-Trunk1] quit
      [HuaweiA] interface gigabitethernet 0/0/1
      [HuaweiA-GigabitEthernet0/0/1] l2protocol-tunnel PVST+ enable
      [HuaweiA-GigabitEthernet0/0/1] l2protocol-tunnel STP enable
      [HuaweiA-GigabitEthernet0/0/1] quit
      [HuaweiA] interface gigabitethernet 0/0/2
      [HuaweiA-GigabitEthernet0/0/2] l2protocol-tunnel PVST+ enable
      [HuaweiA-GigabitEthernet0/0/2] l2protocol-tunnel STP enable
      [HuaweiA-GigabitEthernet0/0/2] quit
      

      # Configure HuaweiB.

      [HuaweiB] interface eth-trunk 1
      [HuaweiB-Eth-Trunk1] l2protocol-tunnel PVST+ enable
      [HuaweiB-Eth-Trunk1] l2protocol-tunnel STP enable
      [HuaweiB-Eth-Trunk1] quit
      [HuaweiB] interface gigabitethernet 0/0/1
      [HuaweiB-GigabitEthernet0/0/1] l2protocol-tunnel PVST+ enable
      [HuaweiB-GigabitEthernet0/0/1] l2protocol-tunnel STP enable
      [HuaweiB-GigabitEthernet0/0/1] quit
      [HuaweiB] interface gigabitethernet 0/0/2
      [HuaweiB-GigabitEthernet0/0/2] l2protocol-tunnel PVST+ enable
      [HuaweiB-GigabitEthernet0/0/2] l2protocol-tunnel STP enable
      [HuaweiB-GigabitEthernet0/0/2] quit
      
  3. Migrate services of the backup uplink of CiscoD to HuaweiB and shut down VLANIF 20, as shown in Figure 5-16.

    Figure 5-16  Migration process 1
  4. Disconnect the cable between CiscoA and CiscoD, shut down VLANIF 20 on CiscoA and CiscoB, and enable VLANIF 20 on Huawei switches.

  5. Test services on CiscoD. When verifying that services on CiscoD are normal, migrate services on the link between CiscoD and CiscoA to HuaweiA. The migration of the access switch is completed, as shown in Figure 5-17.

    Figure 5-17  Migration process 2
  6. Perform the preceding steps to migrate services on downstream access switches one by one. Figure 5-18 shows the network where migration is completed.

    Figure 5-18  Network where migration is completed
  7. Check the configuration of Huawei switches after the replacement.

    1. Run the display l2protocol-tunnel group-mac { all | protocol-type | user-defined-protocol protocol-name } command to check whether Huawei switches can transparently transmit Cisco PVST and STP BPDUs.

    2. Run the show spanning-tree summary command to check spanning tree status information on Cisco switches.

    3. Verify services on user-side devices and check whether the replacement is successful.

Huawei switches transparently transmit Cisco PVST and STP BPDUs to implement spanning tree negotiation between Cisco switches, so Huawei switches broadcast received PVST and STP BPDUs in VLANs. As a result, P2P negotiation between two switches is changed to P2MP negotiation, affecting spanning tree convergence. Solution 1 causes slow spanning tree convergence and easily results in temporary loops.

Translation
Download
Updated: 2019-05-15

Document ID: EDOC1000114005

Views: 176827

Downloads: 8148

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