350-401 Question #885: Real Exam Question with Answer & Explanation

Question

Which of the following are valid Port Aggregation Protocol (PAgP) modes? (Choose two.)

Options

• AOn
• BActive
• CPassive
• DAuto
• EDesirable

Explanation

Port Aggregation Protocol (PAgP) facilitates the automatic negotiation of EtherChannels using two primary modes: Auto and Desirable.

Common mistakes.

• A. The On mode is a static configuration that forces an interface into an EtherChannel without any negotiation protocol like PAgP or LACP.
• B. Active is a negotiation mode specific to Link Aggregation Control Protocol (LACP), not PAgP.
• C. Passive is a negotiation mode specific to Link Aggregation Control Protocol (LACP), not PAgP.

Concept tested. PAgP negotiation modes

Reference. https://www.cisco.com/c/en/us/td/docs/ios/lanswitch/configuration/guide/lsw_c1.html#wp1020084

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