WebJul 16, 2009 · RStp has following port roles: root port designated port alternate port back up port Let focus on alternate port role. My book says a switch receiving the 2nd best bpdu on a port, will consider that port as alternate port. WebMar 1, 2024 · RSTP Port Roles Root - Ports on non-root switches with best cost path to root bridge. These ports forward data to the root bridge. Designated - Ports on root and …
Layer 2 Configuration Guide, Cisco IOS XE Dublin 17.11.x (Catalyst …
Web- Root port (RP): A network port that connects to the root bridge or an upstream switch in the spanning-tree topology. There should be only one root port per VLAN on a switch. - Designated port (DP): A network port that receives and forwards BPDU frames to other switches. Designated ports provide connectivity to downstream devices and switches. WebAccording to what I've read on Cisco's website, RSTP only has 3 Port States: DISCARDING, LEARNING & FORWARDING. RSTP does not have a Port State called BLOCKING. … chunky beauty beast drawing
RSTP vs STP: Spanning Tree Types and Differences - LinkedIn
WebSep 17, 2010 · The Backup role is merely providing a defined role for this kind of port (so that each port can have some role assigned) but for shared segments, there is no rapid convergence. Rapid convergence in RSTP can be achieved only on point-to-point links. The 802.1D is defined in these five different port states: 1. disabled 2. listening 3. learning 4. blocking 5. forwarding See the table in the Port Statessection of this document for more information. The state of the port is mixed, whether it blocks or forwards traffic, and the role it plays in the active topology (root … See more This document provides information about the enhancements added by RSTP to the previous 802.1D standard. The 802.1D Spanning Tree Protocol (STP) standard was designed at a … See more This table shows the support of RSTP in Catalyst switches, and the minimum software required for that support. See more Few changes have been introduced by RSTP to the BPDU format. Only two flags, Topology Change (TC) and TC Acknowledgment (TCA), are defined in 802.1D. However, RSTP now uses all six bits of the flag byte … See more Web*RSTP roles: - Root Port: Port closest to the Root Bridge in forwarding state - Designated Port: Of all Switch ports on all switches attached to the same. segment/collision domain, the port that advertises the "best" BPDU. - Alternate Port: This is a port that provides an alternative path to the root bridge. This path is less desirable that the ... chunky beanie knitting pattern