ccna voice book pdf

ccna voice book pdf.11.6 Certification SummaryThis chapter focuses on basic configuration tasks that are specific to Cisco Catalyst switches. The 2960 switch is introduced, including the meaning of the LED colors and the purpose of the MODE button. The switch boots up by running POST,loading the IOS, and then loading the configuration; if no configuration file is found, the IOS will run the system configuration dialog.To manage the switch remotely, you need at least the IP address associated with the VLAN (configured using the command interface vlan and ip address) and the default gateway address (configured using the command ip default-gateway); to see the MAC address that the switch is informed of, use the command show mac-address- tableOPort security can be used to prevent unauthorized access to the LAN O addresses can be learned dynamically (will not be saved), learned through sticky learning (will be saved), or configured statically. A security violation can result when more than the specified number of MAC addresses are connected to the interface or when the MAC address is connected to a port that does not meet expectations. Violation modes include restrict, protect, and shutdowno port security can only be configured on access (non-trunking) ports, for which the command switchport port.security can be used.117 Two-Minute Sprint.2960 Switch Overview .The 2960 switch supports Fast Ethernet interfaces and Gigabit Ethernet interfaces.. The SYSTEMLED will be amber if the switch fails. . the MODE button is used to modify what the port LED indicates. . If the port LED alternates between amber and green, there is a problem with the port; if it is amber, the port isdisabled: shutdown, STP blocking status, or security violation.Switch startup. When the switch boots, POST is run, IOS is found and loaded, and configuration is found and loaded. -. If the configuration file is not found at startup, you can answer the system configuration dialog questions to give the switch basic configuration.