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Unformatted text preview: 184.108.40.206.4.1 – internet private enterprise Ans: General Dynamics C4: 576 Cisco: 9 Northern Telecom (NORTEL): 562 IBM: 2 Hewlet Packard: 11 AT&T: 74 5. What is the highest enterprise number that has been assigned? Ans: Securaplane Technologies: 28898 (This is the latest information I can find. It may change as time passes) 6. What is the minimum time for a ARP response on a 1 Gbps Ethernet? ARP Ethernet frame = 512+64 = 576 bits Transmission delay: tx T = 9 10 * 1 576 = 576 ns Assume the distance between sender or receiver to the switch is 100 meters Propagation delay: 8 10 * 2 100 = p T = 500 ns Processing delay: 100 = s T ns (for typical switch) The minimum end-to-end delay = tx T + 2 p T + s T =1676 ns = 1.676 s μ The minimum time for an ARP response since sending out the request = 2*1.676 = 3.352 s μ...
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- Spring '10
- Subroutine, Network switch, ARP, General Dynamics, Northern Telecom