4. Flushing ARP:
After the installation of PePLink Balance in Drop-in Mode, the hosts on both sides of
PePLink Balance will notice a change in MAC addresses. (The installation of PePLink
Balance in Drop-in Mode will effect no change in IP addresses.)
More specifically, LAN hosts find that IP packets from WAN hosts report the MAC address
of PePLink Balance. Similarly, WAN hosts find that the MAC address of PePLink Balance is
reported by the IP packets from LAN hosts.
From a practical perspective, the mentioned change in MAC addresses is communicated,
briefly after the installation of PePLink Balance, to the WAN1 router, the firewall, and
hosts on the LAN via broadcast ARP packets.
The potential issue exists where the broadcast ARP packets do not reach some hosts
and/or routers. Under such circumstances, the ARP table entries of the affected
equipment would not be up to date and, therefore, the affected equipment would not be
able to communicate.
Flushing the ARP table of the affected equipment will likely overcome this issue.
Alternatively, it may also be practical to wait for the ARP table entries to refresh, or to
reboot the affected equipment. (ARP table entries in Windows are refreshed every 5
seconds; other types of equipment may require greater lengths of time to refresh.)
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