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[Enterprise SONiC] Config load Follow

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andyyl_chen 陳英倫
  • Updated

This command reads the specified JSON file and writes it to the config database for addition and replacement as running settings.

Tested model & firmware version:

  • Switch model name:

       AS7326-56X

  • Edgecore SONiC version: 

202006.4

202012.2

202111.3

Restriction:

  • Running "config load" without specifying a file path will write the startup-config file (/etc/sonic/config_db.json) to the database

Config load specified file

 

This config example is based on 202111.3.(It might be different then other release)

Step1. Check the running settings of the VLAN interface.

admin@sonic:~$ sudo show runningconfiguration all
{
    omitted...
   "VLAN": {
        "Vlan10": {
            "vlanid": "10"
        }
    },
    "VLAN_INTERFACE": {
        "Vlan10": {},
        "Vlan10|192.168.10.10/24": {}
    },
    "VLAN_MEMBER": {
        "Vlan10|Ethernet0": {
            "tagging_mode": "tagged"
        },
        "Vlan10|Ethernet3": {
            "tagging_mode": "untagged"
        }
    }
}

Step2. Create a JSON file(vlan_interface.json) to modify following:

  • VLAN IP interface: 192.168.10.10/24 to 192.168.20.10/24
  • Ethernet0 set to untagged member
  • Remove Ethernet3 from Vlan10 member
  • Add Ethernet48 to Vlan10 member as tagged.
admin@sonic:~$ vi vlan_interface.json
admin@sonic:~$ vi vlan_interface.json
{
     "VLAN": {
        "Vlan10": {
            "vlanid": "10"
        }
    },
    "VLAN_INTERFACE": {
        "Vlan10|192.168.10.10/24": null,
        "Vlan10|192.168.20.10/24": {}
    },
    "VLAN_MEMBER": {
        "Vlan10|Ethernet0": {
            "tagging_mode": "untagged"
        },
        "Vlan10|Ethernet3": null,
        "Vlan10|Ethernet48": {
        "tagging_mode": "tagged"
        }
    }
}

 

Step3. Run "config load" to apply information to the running configuration.

admin@sonic:~$ sudo config load vlan_interface.json

Load config from the file(s) vlan_interface.json ? [y/N]: y

Running command: /usr/local/bin/sonic-cfggen -j vlan_interface.json --write-to-db

Step 4. Check the running configuration

202006 branch:

admin@sonic:~$ show runningconfiguration all
{
    omitted...
    "VLAN": {
        "Vlan10": {
            "vlanid": "10"
        }
    },
    "VLAN_INTERFACE": {
        "Vlan10": {},
        "Vlan10|192.168.20.10/24": {}
    },
    "VLAN_MEMBER": {
        "Vlan10|Ethernet0": {
            "tagging_mode": "untagged"
        },
        "Vlan10|Ethernet48": {
            "tagging_mode": "tagged"
        }
    }
}

Step5. Check startup configuration, it won't be modified.

admin@sonic:~$ sudo cat /etc/sonic/config_db.json
{
    omitted...
    "VLAN": {
        "Vlan10": {
            "vlanid": "10"
        }
    },
    "VLAN_INTERFACE": {
        "Vlan10": {},
        "Vlan10|192.168.10.10/24": {}
    },
    "VLAN_MEMBER": {
        "Vlan10|Ethernet0": {
            "tagging_mode": "tagged"
        },
        "Vlan10|Ethernet3": {
            "tagging_mode": "untagged"
        }
    }
}

Step6. Save the running configuration to startup configuration and checking.

admin@sonic:~$ sudo config save -y
admin@sonic:~$ sudo cat /etc/sonic/config_db.json
{
    omitted...
    "VLAN": {
        "Vlan10": {
            "vlanid": "10"
        }
    },
    "VLAN_INTERFACE": {
        "Vlan10": {},
        "Vlan10|192.168.20.10/24": {}
    },
    "VLAN_MEMBER": {
        "Vlan10|Ethernet0": {
            "tagging_mode": "untagged"
        },
        "Vlan10|Ethernet48": {
            "tagging_mode": "tagged"
        }
    }
}

 

 

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