Bypass link

A bypass link can be set up at layer-2 (e.g., Mikrotik’s active-backup link bonding, or an active-backup LACP setup) or layer-3 (e.g., OSPF or BGP dynamic routing). Since the links are established directly between the two neighboring nodes, transparently with the BQN in the middle, the link monitoring mechanism should not be electrical (e.g., MII), but based on messages (e.g., ARP or fast LACP).

External bypass device

An external bypass device is connected to the external links and to the BQN. The device will trigger an internal bypass if it detects the BQN is down (monitoring takes place through a USB connection between the BQN server and the bypass device).  It is enabled selecting Normal in Configuration->Interfaces->Bypass. It is also possible to force the bypass from the BQN with the option Forced Bypass in the same screen.

Currently, only Niagara devices are supported.

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