When Eth-Trunk is deployed for the heartbeat links between firewalls, the Eth-Trunk interface can be
configured as a Layer 2 interface as long as the total bandwidth of active links on the Eth-Trunk is
greater than 30% of the bandwidth required by service traffic.
HWTACACS is a centralized information exchange protocol based on the client/server structure. It
uses UDP for transmission and performs authentication, authorization, and accounting for users
accessing the Internet through Point-to-Point Protocol (PPP) or Virtual Private Dial-up Network
(VPDN) and administrative users logging in to devices.
When Eth-Trunk is deployed for the heartbeat links between firewalls, the Eth-Trunk interface can be
configured as a Layer 2 interface as long as the total bandwidth of active links on the Eth-Trunk is
greater than 30% of the bandwidth required by service traffic.