ICND2 -200-101 Study Guide (CCNA)

ICND2 -200-101 Study Guide ( ccna ) SECTION I (21%) LAN Switching Technologies Identify Enhanced Switching Technologies a. Rapid Spanning Tree Protocol (RSTP); IEEE 1) This is ability to by-pass the full 50sec 4-state STP convergence process a) RSTP States: 1. Discarding initial state; no traffic passes through Interface in or out, except STP msgs i. NOTE: This State is different than in (default) PVST, which is called BLOCKING ii. This state also refers to an Interface that is admin disabled (is disabled state for PVST) 2. Learning Switch does not fwd Frames; begins learning MAC of recv d Frames 3. Forwarding final state; traffic passes/fwd s through Interface normally 2) STP goes from Discard > Forward convergence in a few secs (50secs for PVST) 3) NOTE: legacy STP = IEEE 4) Other Port Types for RSTP: a) Alternate port that will take over for the Root Port (RP) if RP link fails b) Backup port that will take over for the Designated Port (DP) if the DP link fails; usually connects to a Hub c) Point-to-Point port connected to another Switch, PC, Router, etc; Port runs Full Duplex 1.

ICND2 -200-101 Study Guide (CCNA) SECTION I (21%) – LAN Switching Technologies 1.1 – Identify Enhanced Switching Technologies a. Rapid Spanning Tree Protocol (RSTP); IEEE 802.1w 1) This is ability to by-pass the full 50sec 4-state STP convergence process

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