Final answer:
Active / Passive in EtherChannel refers to the roles within the Link Aggregation Control Protocol (LACP), where 'active' initiates negotiation and 'passive' waits for initiation.
Step-by-step explanation:
The reference to Active / Passive in the context of EtherChannel pertains to the Link Aggregation Control Protocol (LACP). LACP is one of the protocols used to create EtherChannels in networking, which allows for the bundling of several physical links into a single logical link for increased bandwidth and redundancy. In LACP, the active mode initiates the negotiation of the EtherChannel, while the passive mode waits for the active side to initiate this process. Thus, when talking about Active or Passive within EtherChannel configurations, it specifically refers to the role a device plays within the LACP protocol.