Tag :: Refresh

Forced periodic ARP refresh adds support for a mechanism that allows forcing ARP/NDP refresh requests to be sent in periodic intervals independently of ARP/NDP entries' confirmed time in the kernel. By default, when a neighbor entry gets confirmed by various processes such as ARP synchronization between MLAG peers, an ARP refresh request is not sent for at least another duration of ARP aging timeout (or ND cache expiry time for the IPv6 case). This feature provides support for a configuration to force sending refresh requests at the configured ARP/ND aging timeout regardless of the last confirmed time.

The software for Syslog, NTP and SNMP used in EOS resolves hostnames at service start-up. It’s possible that during service operation, the configured host becomes unavailable and the configuration needs to be set to a different host to continue the service. The problem is that such change requires manual restart of the service. Even if the hostname doesn’t change and only the underlying address is updated at the DNS server, the administrator has to manually reset service configuration.