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7.5. Verifying Network Configuration Bonding for Redundancy

Network redundancy is a process when devices are used for backup purposes to prevent or recover from a failure of a specific system. The following procedure describes how to verify the network configuration for bonding in redundancy:
Procedure
  1. Ping the destination IP from the bond interface. For example: 
    ~]# ping -I bond0 DSTADDRping -I bond0 DSTADDRping -I bond0 DSTADDR
    Copy to Clipboard Toggle word wrap
  2. View which interface is in active mode: 
    ~]# cat /sys/class/net/bond0/bonding/active_slave
enp1s0
    Copy to Clipboard Toggle word wrap
    enp1s0 is the active port interface.
  3. Set the active port interface down: 
    ~]# ip link set enp1s0 downip link set enp1s0 downip link set enp1s0 down
    Copy to Clipboard Toggle word wrap
  4. Check if the backup interface is up: 
    ~]# cat /sys/class/net/bond0/bonding/active_slave
enp2s0
    Copy to Clipboard Toggle word wrap
    enp2s0 is now the active port interface.
  5. Check if you can still ping the destination IP from the bond interface: 
    ~]# ping -I bond0 DSTADDRping -I bond0 DSTADDRping -I bond0 DSTADDR
    Copy to Clipboard Toggle word wrap
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