200-301 ccna exam cost uk

200-301 ccna exam cost uk.In this example, frames are sent from PC1 (source MAC address 0200.1111.1111) to R1 (destination MAC address 0200.0101.0101)The following are the logical steps of the switch forwarding process. SW1 determines whether the current operating state of interface FaO/11 is an access interface or a trunk based on the forwarding logic summarized in step 1. FaO/11 in this example is an access interface assigned to VLAN3. According to step 2, SW1 adds an entry to the MAC address table, adding MAC address 0200.1111.1111, interface FaO/11, and VLAN3into the table. Then according to step 3,SW1 determines that the input interface FaO/11 is currently in STP forwarding state. Finally, following step 4, SW1 looks for an entry in VLAN3 for MAC address 0200.0101.0101. If SW1 finds aIf SW1 finds an entry with interface GiO/1 listed, SW1 forwards this frame only to the outgoing interface GiO/1. If the output interface (GiO/l) is a trunk connectionport, SW1 adds a VLAN Port Aggregation (Trunking) header with VLAN 3 listed, where the VLAN ID was electrically determined in Step 1.Now make a slight change to the example and consider the case where PC1 sends a broadcast. The process from step 1 to step 3 is the same as above, but in step 4, SW1 floods this frame. However, SW1 only floods this frame to access ports in VLAN 3 and outside trunk ports that support VLAN 3. And because of this restriction, SW1 does not forward a copy of this frame to ports that are not in the STP forwarding state.While these forwarding logics are relatively simple, the troubleshooting process requires the application of most of the LAN-related concepts in ICND1 and ICND2, as well as other aspects of the topic. For example, if PC1 is known to send the frame to SW1 first, it makes sense to check the interface status first to ensure that the interface is in the "1 up and up" state, otherwise the interface will have to be adjusted. In the process of troubleshooting, a large number of individual items actually need to be checked. Therefore, this chapter proposes a troubleshooting methodology for LAN data platforms, which is organized into four main steps, as follows.Step 1 Identify the network diagram using CDP. Step 2 Isolate interface problems. Step 3 Isolate filtering and port security issues.Step 4 Isolate VLAN and port aggregation (Trunking) issues.The next four sections cover each of these four steps by reviewing and explaining the concepts and tools involved. Only some of these specifics are new; most of the others have already been covered in the Cisco CCENT/CCNAICNDl (lOO-lOl) Certification Exam Guide and in Chapters 1 and 2 of this book. The main purpose here is to help you synthesize all of these concepts and apply them to analyze specific cases, the same ability that is required by the exam to spend the least amount of time and achieve a greater chance of success.