CONFIGURING THE SWITCH

The Spanning Tree Protocols supported by the switch include the following standards:

STP – Spanning Tree Protocol (IEEE 802.1D).

RSTP – Rapid Spanning Tree Protocol (IEEE 802.1w).

STP uses a distributed algorithm to select a bridging device (STP-compliant switch, bridge or router) that serves as the root of the spanning tree network. It selects a root port on each bridging device (except for the root device) which incurs the lowest path cost when forwarding a packet from that device to the root device. Then it selects a designated bridging device from each LAN which incurs the lowest path cost when forwarding a packet from that LAN to the root device. All ports connected to designated bridging devices are assigned as designated ports. After determining the lowest cost spanning tree, it enables all root ports and designated ports, and disables all other ports. Network packets are therefore only forwarded between root ports and designated ports, eliminating any possible network loops.

Once a stable network topology has been established, all bridges listen for Hello BPDUs (Bridge Protocol Data Units) transmitted from the Root Bridge. If a bridge does not get a Hello BPDU after a predefined interval (Maximum Age), the bridge assumes that the link to the Root Bridge is down. This bridge will then initiate negotiations with other bridges to reconfigure the network to reestablish a valid network topology.

RSTP is designed as a general replacement for the slower, legacy STP. RSTP achieves much faster reconfiguration (around one tenth of that required by STP) by reducing the number of state changes before active ports start learning, predefining an alternate route that can be used when a node or port fails, and retaining the forwarding database for ports insensitive to changes in the tree structure when reconfiguration occurs.

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SMC Networks 10/100/1000 SMCGS8P-Smart manual Configuring the Switch

10/100/1000 SMCGS8P-Smart specifications

SMC Networks has long been a reputable name in the networking industry, known for delivering reliable and innovative solutions to meet the demands of modern networking environments. The SMCGS8P-Smart is an impressive addition to their lineup, offering advanced functionality and robust features suitable for small to medium-sized businesses and other network-intensive applications.

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