Rear Panel Cabling
You can use one or two connections for HA redundancy support between the two members of an HA node. Using two rear interfaces for sharing redundancy information provides a high level of reliability. As a rule, Mgmt0 should be reserved as the boot/maintenance interface. This leaves Mgmt1 and Mgmt2 available for sharing HA information.

HA-Sharing Ports
Management network ports feature automatic crossover negotiation so that a crossover cable is not necessary for HA cabling.
To cable Acme Packet 6300/6350 in an HA configuration using single rear interface support: