CANOGA PERKINS 9135 SNMP Managed 10/100/1000 Ethernet Switch - Manual (Page 26)

EdgeAccess Universal Chassis System
Model 9135 10/100/1000 3-10
Menu and Selection Minimum Access Menu and Selection Minimum Access
Host Table / SNMP Settings Menu Port n Details Menu
Read Community Supervisor Clear Counters User
Write Community Supervisor Traps Log Menu
Send Alert Traps Supervisor View Previous Page User
SLIP Port Settings Menu View Next Page User
Interface Supervisor Clear the log Supervisor
Init Modem at Startup Supervisor Fdb Log Menu
Modem Init String Supervisor View Previous Page User
Password Enable Supervisor View Next Page User
SLIP Password Supervisor Ping Menu
SLIP IP Address Supervisor Ping Address User
SLIP Subnet Mask Supervisor Ping Count User
SLIP Port Setup Menu Start Pinging User
Baud Rate Supervisor
Parity Supervisor
Stop Bits Supervisor
Flow Control Supervisor
3.5 Switch Configuration and Spanning Tree
The Switch Configuration menu offers one option, Spanning Tree; see Figure 13.
Switch Configuration
1. Spanning Tree
2. Main Menu
Figure 13. Switch Configuration Menu
Ethernet bridges or switches use the Spanning Tree Protocol (STP), an algorithm that creates a logical
topology that connects all network segments and ensures only one path between any two stations.
When STP is enabled, the 9135 monitors the incoming data packets and periodically sends Bridge
Protocol Data Units (BPDU). STP monitors the incoming BPDUs to detect any loops. If the same
BPDU arrives on two ports, STP blocks one port to remove the loop. Because this tree-like structure
spans all nodes in the network, it is called Spanning Tree. Figure 14 shows a typical STP application.