Remember, without Layer 3 devices like routers, only MAC addresses could be used to get packets from device to device. Is this a plausible scenario?
Added by Marina P.
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Step 1: In a network without Layer 3 devices like routers, devices would only be able to communicate with each other using MAC addresses. Show more…
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Problem 3: Data Framing ARP (2.5pts) Consider the following network topology. Assume that routing tables are properly configured, and the network just started (i.e., all caches are empty). Node C: - MAC Address: 00-00-00-00-00-05 - IP Address: 192.168.1.253 Node A: - MAC Address: 00-00-00-00-00-02 - IP Address: 192.168.0.2 Node B: - MAC Address: 00-00-00-00-00-03 - IP Address: 192.168.0.3 Router: - IP Address: 192.168.1.254 - MAC Address: 00-00-00-00-00-04 3.1. Sent by node C Node C sends a UDP packet [src=192.168.1.253, dst=192.168.0.3] (no IP level response). Show destination/source MAC addresses (in form -02, -03, -01, -04, or -05) of Ethernet frames that will result from this (received/sent). For each, highlight if it is ARP (request/response) or actual UDP packet. Only communication between node C and Router should be considered (both directions). Should be 3 frames. 3.2. Sent by the switch Now consider the same UDP packet, but packets received and sent by the switch. The switch has 3 ports and will be self-learning during the exchange (initially switching table is empty). Show MAC addresses for each from the switch received and which port(s) they were forwarded. Remember, switch can send to one or multiple ports, depending on if it has no information or self-learned information from previous exchanges.
Akash M.
A router connects three links (networks). How many of each of the following layers can the router be involved with? a. Physical layer b. Data-link layer c. Network layer
Madhur L.
Consider the network shown below. The IP and MAC addresses are shown for hosts A, B, C, and D, as well as for the router's interfaces. Consider an IP datagram being sent from node B to node D. What is the source MAC address on the frame at point (3)? What is the destination MAC address on the frame at point (3)? What is the source IP address of the datagram at point (3)? What is the destination IP address of the datagram at point (3)? What is the source MAC address on the frame at point (4)? What is the destination MAC address on the frame at point (4)? What is the source IP address of the datagram at point (4)? What is the destination IP address of the datagram at point (4)?
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