Management and front port IPv4/IPv6 Address

Example 1: Configure IP address on management port "eth0"

Reference model:

• Switch model name: AS7326-56X
• Edgecore SONiC version: SONiC.Edgecore-SONiC_20200722_070543_ec201911_141

Default setting:

1. DHCP address on management port"eth0"

Procedure :

Steps 1. Configure IP address on management port "eth0" 

admin@sonic:~$ sudo config interface ip add eth0 188.188.97.16/16 188.188.1.1
admin@sonic:~$ sudo config interface ip add eth0 2001::8/64 2001::1

Steps 2. Check IP address 

admin@sonic:~$ show ip interfaces  
Interface    Master   IPv4 address/mask   Admin/Oper   BGP Neighbor  Neighbor
----------- -------- ------------------- ------------ -------------- ---------
Loopback0             10.1.0.1/32         up/up        N/A         N/A
docker0               240.127.1.1/24      up/down      N/A         N/A
eth0                  188.188.97.16/16    up/up        N/A         N/A 
lo                    127.0.0.1/8         up/up        N/A         N/A 

admin@sonic:~$  show ipv6 interfaces  
Interface    Master   IPv6 address/mask                       Admin/Oper  BGP Neighbor   Neighbor IP
----------- -------- --------------------------------------- ------------ -------------- -------------
Bridge                fe80::4020:6aff:fee4:b0a3%Bridge/64     up/down      N/A            N/A
Ethernet0             fe80::ba6a:97ff:fee2:479c%Ethernet0/64  up/up        N/A            N/A
Ethernet1             fe80::ba6a:97ff:fee2:479c%Ethernet1/64  up/up        N/A            N/A
Ethernet48            fe80::ba6a:97ff:fee2:479c%Ethernet48/64 up/up        N/A            N/A
Ethernet52            fe80::ba6a:97ff:fee2:479c%Ethernet52/64 up/up        N/A            N/A
Loopback0             fe80::243e:e6ff:fee7:5ca1%Loopback0/64  up/up        N/A            N/A
eth0                  2001::8/64                              up/up        N/A            N/A
                      fe80::ba6a:97ff:fee2:479c%eth0/64
lo                    ::1/128                                 up/up        N/A            N/A

admin@sonic:~$ show management_interface address
Management IP address = 188.188.97.16/16
Management Network Default Gateway = 188.188.1.1
Management IP address = 2001::8/64
Management Network Default Gateway = 2001::1

Note: The "show management_interface address" command and "BGP Neighbor information" do not support in ecSONiC-201904 version.

Steps 3. Save the setting to config_db.json

admin@sonic:~$ sudo config save -y

Steps 4. Check IP address setting on config_db.json

admin@sonic:/etc/sonic$ sudo vi config_db.json 
{ 
   ...omitted 
   "MGMT_INTERFACE": {
       "eth0|188.188.97.16/16": {
           "gwaddr": "188.188.1.1"
        },
        "eth0|2001::8/64": {
            "gwaddr": "2001::1"
        }
     }, 
     ...omitted
}

Example 2: Configure IP address on front port (aka physical interface).

Procedure :

Caution: Please make sure the port name is correct. Otherwise it does not work.

Since there's no warming messages for wrong command.

Steps 1. Configure IP address on front port. i.e Ethernet0

admin@sonic:~$ sudo config interface ip add Ethernet0 192.168.1.1/24        
admin@sonic:~$ sudo config interface ip add Ethernet0 2002::1/64 

Steps 2. Check IP address 

admin@sonic:~$ show ip interfaces 
Interface    IPv4 address/mask    Admin/Oper
-----------  -------------------  ------------
Ethernet0    192.168.1.1/24       up/down
docker0      240.127.1.1/24       up/down
eth0         188.188.97.32/16     up/up
lo           127.0.0.1/8          up/up
             10.1.0.1/32
             
admin@sonic:~$  show ipv6 interfaces 
Interface    IPv6 address/mask                       Admin/Oper
-----------  --------------------------------------  ------------
Bridge       fe80::f4f6:a4ff:fe97:3c88%Bridge/64     up/up
Ethernet0    2002::1/64                              up/down
dummy        fe80::90cd:eff:fe7b:359f%dummy/64       up/up
eth0         fe80::aa2b:b5ff:fe9d:d7db%eth0/64       up/up
lo           ::1/128                                 up/up

Steps 3. Save the setting to config_db.json

admin@sonic:~$ sudo config save -y

Steps 4. Check IP address setting on config_db.json

admin@sonic:/etc/sonic$ sudo vi config_db.json
{
    ...omitted
    "INTERFACE": {
        "Ethernet0|192.168.1.1/24": {},
        "Ethernet0|2002::1/64": {},
    ...omitted
    },
    ...omitted
}