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8.12. Verifying Network Configuration Teaming 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 teaming in redundancy:
Procedure
- Ping the destination IP from the team interface. For example:
~]#
ping -I team0 DSTADDR - View which interface is in
activemode:~]#
enp1s0 is theteamdctl team0 statesetup: runner: activebackup ports: enp1s0 link watches: link summary: up instance[link_watch_0]: name: ethtool link: up down count: 0 enp2s0 link watches: link summary: up instance[link_watch_0]: name: ethtool link: up down count: 0 runner: active port: enp1s0activeinterface. - Temporarily remove the network cable from the host.
Note
There is no method to properly test link failure events using software utilities. Tools that deactivate connections, such asipornmcli, show only the driver’s ability to handle port configuration changes and not actual link failure events. - Check if the
backupinterface is up:~]#
enp2s0 is now theteamdctl team0 statesetup: runner: activebackup ports: enp1s0 link watches: link summary: down instance[link_watch_0]: name: ethtool link: down down count: 1 enp2s0 link watches: link summary: up instance[link_watch_0]: name: ethtool link: up down count: 0 runner: active port: enp2s0activeinterface. - Check if you can still ping the destination IP from the team interface:
~]#
ping -I team0 DSTADDR