What is the source IP address 192.168.1.147 in the example What is the destination IP address 192.168.1.1 in the example.Optional activities are designed to enhance understanding or to provide additional practice or both.For example, if the upper layer protocols are TCP and IP and the media access is Ethernet, then the Layer 2 frame encapsulation will be Ethernet II.
In the first part of this lab, you will review the fields contained in an Ethernet II frame. In Part 2, you will use Wireshark to capture and analyze Ethernet II frame header fields for local and remote traffic. It also assumes that Wireshark has been pre-installed on the PC. The screenshots in this lab were taken from Wireshark v2.4.3 for Windows 10 (64bit). A filter has been applied to Wireshark to view the ARP and ICMP protocols only. The session begins with an ARP query for the MAC address of the gateway router, followed by four ping requests and replies. Each address is 48 bits long, or 6 octets, expressed as 12 hexadecimal digits, 0-9,A-F. Determine Ip And Header Information For A Data Packet Frame Serial Number OfA common format is 12:34:56:78:9A:BC.The first six hex numbers indicate the manufacturer of the network interface card (NIC), the last six hex numbers are the serial number of the NIC.The destination address may be a broadcast, which contains all ones, or a unicast. There are numerous upper-layer protocols supported by Ethernet II. The value is computed by the sending machine, encompassing frame addresses, type, and data field. The host with the IP address of 192.168.1.1 (default gateway) will send a unicast reply to the source (PC host). This reply contains the MAC address of the NIC of the default gateway. The ARP broadcast is used to request the MAC address of the host with the IP address contained in the ARP. You will then examine the information that is contained in the frame header fields. The filter does not block the capture of unwanted data; it only filters what to display on the screen. If the box is green, click Apply (the right arrow) to apply the filter. If you selected the correct interface for packet capturing in Step 3, Wireshark should display the ICMP information in the packet list pane of Wireshark, similar to the following example. This line displays the length of the frame; 74 bytes in this example. What is the MAC address of the PC NIC 00:26:b9:dd:00:91 in example What is the default gateways MAC address 14:91:82:9f:6b:8c in example. What type of frame is displayed 0x0800 or an IPv4 frame type. Notice that the data contains the source and destination IPv4 address information.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |