C-H Model Networking

Latest reply: Nov 7, 2018 01:43:18 295 1 0 0

Interworking and Replacement Solution 1: C-H Model Networking

Overview

In the C-H model, a Cisco switch directly connects to a Huawei S series switch that has no downstream Cisco switch connected.

When VTP is enabled on the Cisco switch to synchronize VLAN information, the Huawei S series switch cannot process VTP packets. Therefore, a VLAN needs to be configured manually on the Huawei S series switch.

Configuration Notes
  • This example applies to Huawei S series switches of all versions.
  • If switchport dynamic auto or switchport dynamic desirable is configured on the Cisco switch interface before the Cisco switch interface is directly connects to the Huawei S series switch, change it to switchport mode trunk to prevent DTP negotiation failure.
Networking Requirements

In Figure 2-56, a Huawei S series switch directly connects to a Cisco VTP server. The Cisco switch and user hosts connected to the Huawei S series switch need to communicate in VLAN 10.

Figure 2-56  Hybrid networking of the C-H model 
imgDownload?uuid=acfad7c6e278471ebd25cca
Configuration Roadmap

The configuration roadmap is as follows:

  1. Check the configuration of the Cisco switch.
  2. Create a VLAN manually on the Huawei S series switch and add interfaces to the VLAN.

Procedure

  1. Check the Cisco VTP server configuration. The display depends on the device configuration.

    # Run the show running-config command to check the interface configuration.

    !
    hostname VTP_Sever
    !
    interface GigabitEthernet5/1
     switchport trunk encapsulation dot1q
     switchport mode trunk
    !
    interface GigabitEthernet5/2
     switchport trunk encapsulation dot1q
     switchport mode trunk
    !
    interface GigabitEthernet5/3
     switchport trunk encapsulation dot1q
     switchport mode trunk
    !

    If the interface configuration is incorrect, perform the following operations to configure the interface.

    VTP_Sever# configure terminal
    VTP_Sever(config)# interface gigabitethernet 5/1
    VTP_Sever(config-if)# switchport trunk encapsulation dot1q  //Configure an encapsulation mode; otherwise, the link type of an interface cannot be set to trunk.
    VTP_Sever(config-if)# switchport mode trunk  //Configure the interface connected to the switch as a trunk interface. The interface joins all VLANs by default.
    VTP_Sever(config-if)# exit
    VTP_Sever(config)# interface gigabitethernet 5/2
    VTP_Sever(config-if)# switchport trunk encapsulation dot1q
    VTP_Sever(config-if)# switchport mode trunk
    VTP_Sever(config-if)# exit
    VTP_Sever(config)# interface gigabitethernet 5/3
    VTP_Sever(config-if)# switchport trunk encapsulation dot1q
    VTP_Sever(config-if)# switchport mode trunk
    VTP_Sever(config-if)# exit
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Jessica_Tian
Created Nov 7, 2018 01:43:18 Helpful(0) Helpful(0)

thanks for your sharing !
  • x
  • convention:

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