200-301 ccna exam dumps

200-301 ccna exam dumps.The CDP command output is somewhat complicated because it is not easy to tell if the listed interface is on the local device or on an adjacent device. If you look at the output from left to right, you will see that under the "DeviceID" heading, the host name of the adjacent device is usually displayed. The next heading "Local Interface" refers to the "Local Interface", which is the interface name or interface number of the local device. The interface name or interface number of the neighboring device is displayed under the "PortID" heading on the right side of the command output line.Example 3-1 shows the output of the show cdp neighbors command on SW2 in Figure 3-3. By comparing the shaded portion of the command output with exactly what is shown in Figure 3-3, you can see which device's interface the fields shown in the output correspond to.Example 3-1 Showcdp Command ExampleSW2# showcdp neighbors Capability Codes:R -Router,T -TransBridge,B -SourceRouteBridge S -Switch, HD -Remote,C -Host, I -IGMP, r-Repeater,P -Phone, -CVTA, M-Two-portMacRelayDevice ID Local Intrfce Holdtme Capability Platform Port tb swi MM 154 S I WS-C2960-Barrier SW3 Gig 0/1 170 S I WS-C2960-Gig 0/2 R1 Fas 0/10 134 RSI CISCO2901 Gig 0 /1Enabling CDP can result in exposing security risks. To avoid the risk of attackers gaining access to detailed information about each switch, you can disable CDPO Cisco recommends that you disable CDP on all interfaces if you do not specifically need it. the most likely situations where CDP is needed are interfaces that connect to other Cisco routers, switches, and Cisco IP phones. In addition, CDP can be disabled by using the nocdp enable interface subcommand on each interface (the cdp enable interface subcommand restarts CDP). Correspondingly, the global command no cdp run disables CDP on all switches, while the cdp run global command restarts CDP on all switches.3,Step 2: Isolating Interface Issues Before a Cisco switch can process frames received from or send frames out of an interface, the Cisco switch's interfaces must be in a working state3.2 Fundamentals 57state. Obviously, the troubleshooting steps should start with reviewing the status of each interface, especially those interfaces that have the potential to forward frames, and need to verify that they are enabled and in working condition. This section examines the status of an interface on a CiscoIOS-based switch, lists the root cause of the interface being in a non-operational state, and addresses common problems when transitioning the interface to an operational state. The troubleshooting steps for this task are summarized below. Step 2 To examine interface problems, proceed as follows.a.Determine the status code for each required interface, and if the interface is not in the connected or up/up state, resolve the problem so that the interface is in the connected or up/up state.