200-301 online exam

200-301 online exam.The standard pingl72.16.2.101 command on R1 will not test whether the router can get back on subnet 172.16.1.0/24. A better ping test can test the route back to host A's subnet, and an extended ping from R1 can obtain this better test. The extended ping allows R1's ping command to use the LAN IP address of R1 in subnet 172.16.1.0/24. Next, the response answer message goes back to host A's subnet, as shown in Figure 4-11.As a review, let's look at how the router extended ping command works on the CLI. The standard ping command allows the user to select several additional parameters on the ping command. Whereas the extended ping command allows the user to enter parameters directly for longer commands, it also allows the user to simply issue the ping command by pressing Ether,and then the IOS will ask the user to answer several questions to complete the command, such asExample 4-3 shows this. The example shows the ping command on R1 with the same logic as in Figure 4-11. Figure 4-11 Extended ping command to test the route to 172.16.1.5196 Chapter 4, Part 1 Troubleshooting IPv4 Routing Example 4.3 Testing a Reverse Route Using the Extended ping CommandRl# ping Protocol [ip]: Target IP address:172.16.2.101 Repeatcount [5]: Datagram size [100]: Timeout in seconds [2]: Extended commands [n]:y Source addressor interface:172.16.1.1 Type of service [0]: SetDF bit in IP header? [no]: Validate reply data? [no]: Datapattern [OxABCD]: Loose, Strict, Record, Timestamp, Verbose [none]: Sweep range of sizes [n]: Type escapesequence to abort. Sending 5, 100-byte ICMP Echos to 172.16.2.101, timeout is 2seconds: Packet sent with a source addressof 172.16.1.1 Mill Successrate is100 percent (5/5), round-trip min/avg/max = 1/2/4 msThis particular extended ping command tests the same route to the right of EchoRequest, but it also forces a test of the route to the left of ICMP EchoReply. In that direction, R2 needs a route that matches address 172.16.1.1, which is similar to the route on subnet 172.16.1.0/24 (the same subnet that host A is on).From a troubleshooting perspective, it is useful to use both the standard and extended ping commands. Nevertheless, neither is identical to the ping command created on the host, because the router cannot send packets with the host's IP address, and the extended ping command in Example 4-3 uses the source IP address 172.16.1.1, which is not the IP address of Host A.As a result, both the standard and extended ping commands used in the two examples in this section so far fail to test for certain types of problems, such as: /gjj. dropping packets with the IP address of host A, but the same ACL allows packets to attach to the IP address of the router.Sprawl.LAN switch port security release filter A's packets (based on A's MAC address). The router's IP route matches exactly the 172.16.1.51 address of host A and does not match the 172.16.1.1 address of R1.. There is a problem with the default router settings for Host A. Testing LAN Neighbors Using the Standard ping Command