Network

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Display traffic

nload -i 10000000 -o 10000000 p6p1
netstat -anp | grep <port>


Local network configuring using nmtui - example

              ┌───────────────────────────┤ Edit Connection ├───────────────────────────┐
              │                                                                         │
              │         Profile name localport1______________________________           │
              │               Device E8:EA:6A:40:2F:50 (enp0s20u6)___________           │
              │                                                                         │
              │ ═ ETHERNET                                                    <Show>    │
              │                                                                         │
              │ ╤ IPv4 CONFIGURATION <Manual>                                 <Hide>    │
              │ │          Addresses 192.168.0.11_____________ <Remove>                 │
              │ │                    <Add...>                                           │
              │ │            Gateway _________________________                          │
              │ │        DNS servers <Add...>                                           │
              │ │     Search domains <Add...>                                           │
              │ │                                                                       │
              │ │            Routing (No custom routes) <Edit...>                       │
              │ │ [X] Never use this network for default route                          │
              │ │ [X] Ignore automatically obtained routes                              │
              │ │ [X] Ignore automatically obtained DNS parameters                      │
              │ │                                                                       │
              │ │ [X] Require IPv4 addressing for this connection                       │
              │ └                                                                       │
              │                                                                         │
              │ ═ IPv6 CONFIGURATION <Automatic>                              <Show>    │
              │                                                                         │
              │ [X] Automatically connect                                               │
              │ [X] Available to all users                                              │
              │                                                                         │
              │                                                           <Cancel> <OK> │


Bond two network ports together, links to the switch (example for clonfarm21)

nmcli connection add type bond con-name enp_bond ifname enp_bond bond.options mode=802.3ad
nmcli connection add type ethernet ifname ens7np0 master enp_bond
nmcli connection add type ethernet ifname ens2np0 master enp_bond
nmcli connection show

Last command will show follwoing:

NAME                UUID                                  TYPE      DEVICE   
enp_bond            969dc408-bb43-49e0-8c29-62965f70f4c7  bond      enp_bond 
ens10f0             f333ab08-b67a-41c9-9108-7658af3435d0  ethernet  ens10f0  
ens2np0             85e7f4bd-5daf-3095-b207-bdcaf14d903c  ethernet  ens2np0  
ens7np0             5abd79b1-22e9-4210-9262-fc2dbbda51f7  ethernet  ens7np0  
lo                  bcf93a26-5114-45c5-b586-9288dfefbb33  loopback  lo       
bond-slave-ens2np0  7961787a-f51f-459d-9bf8-0add8a528679  ethernet  --       
bond-slave-ens7np0  aa376ad3-fd9f-44a2-8154-04685ce2da72  ethernet  --       
ens10f1             0c14d2dd-c3bc-4d3d-8c7d-04cded521498  ethernet  --       
usb0                4fef7067-fb03-4115-ac62-c95a91979384  ethernet  --

Now, set bond method to 'manual', and set IP address:

nmcli connection modify enp_bond ipv4.method manual ipv4.address 129.57.69.11/24

Set Routing if needed.

You can use 'nmtui' as well to program all above.

Finally, disactivate both ens2np0 and ens7np0, and activate enp_bond; using 'nmtui', or command 'nmcli connection down/up <connection>'.


NOTE: in our case, enp_bond inheritate mac from ens2np0, but IP from ens7np0; only ens7np0 was registered on jnet.

To delete bond, run following command:

nmcli connection delete enp_bond


Bond two network ports together, links to Maroc electronics (example for clondaq9)

nmcli connection add type bond con-name enp_bond ifname enp_bond bond.options mode=broadcast
nmcli connection add type ethernet ifname enp0s20u5 master enp_bond
nmcli connection add type ethernet ifname enp0s20u6 master enp_bond
nmcli connection show
nmcli connection modify enp_bond ipv4.method manual ipv4.address 192.168.0.2/24

Deactivate individual ports and activate bond:

nmcli connection down localport0
nmcli connection down localport1
nmcli connection up enp_bond

NOTE: localport0 etc are profile names as it is shown in nmtui, and NOT a device names like enp0s20u5 etc.

nmtui screen should looks like this:

        ┌────────────────────────────┤ Edit Connection ├────────────────────────────┐
        │                                                                           │
        │           Profile name enp_bond________________________________           │
        │                 Device enp_bond________________________________           │
        │                                                                           │
        │ ╤ BOND                                                          <Hide>    │
        │ │ Slaves                                                                  │
        │ │ ┌─────────────────────────────────────────────────┐                     │
        │ │ │ bond-slave-enp0s20u6                          ↑ │ <Add>               │
        │ │ │ bond-slave-enp0s20u5                          ▒ │                     │
        │ │ │                                               ▮ │ <Edit...>           │
        │ │ │                                               ▒ │                     │
        │ │ │                                               ▒ │ <Delete>            │
        │ │ │                                               ↓ │                     │
        │ │ └─────────────────────────────────────────────────┘                     │
        │ │                 Mode <Broadcast>                                        │
        │ │      Link monitoring <MII (recommended)>                                │
        │ │ Monitoring frequency 100_______ ms                                      │
        │ │        Link up delay 0_________ ms                                      │
        │ │      Link down delay 0_________ ms                                      │
        │ │   Cloned MAC address ________________________________________           │
        │ └                                                                         │
        │                                                                           │
        │ ╤ IPv4 CONFIGURATION   <Manual>                                 <Hide>    │
        │ │            Addresses 192.168.0.2/24___________ <Remove>                 │
        │ │                      <Add...>                                           │
        │ │              Gateway _________________________                          │
        │ │          DNS servers <Add...>                                           │
        │ │       Search domains <Add...>                                           │
        │ │                                                                         │
        │ │              Routing (No custom routes) <Edit...>                       │
        │ │ [X] Never use this network for default route                            │
        │ │ [X] Ignore automatically obtained routes                                │
        │ │ [X] Ignore automatically obtained DNS parameters                        │
        │ │                                                                         │
        │ │ [X] Require IPv4 addressing for this connection                         │
        │ └                                                                         │
        │                                                                           │
        │ ═ IPv6 CONFIGURATION   <Automatic>                              <Show>    │
        │                                                                           │
        │ [X] Automatically connect                                                 │
        │ [X] Available to all users                                                │
        │                                                                           │
        │                                                             <Cancel> <OK> │
        │                                                                           │