Question
Consider the following IP forwarding table that uses CIDR. IP address bytes are in hexadecimal here, so each hex digit corresponds to four address bits.
Consider the following IP forwarding table that uses CIDR. IP address bytes are in hexadecimal here, so each hex digit corresponds to four address bits. This makes prefixes such as /12 and /20 align with hex-digit boundaries. As a reminder of the hexadecimal numbering, : is used as the separator rather than .
destination | next_hop |
---|---|
81:30:0:0/12 | A |
81:3c:0:0/16 | B |
81:3c:50:0/20 | C |
81:40:0:0/12 | D |
81:44:0:0/14 | E |
For each of the following IP addresses, give the next_hop for each entry in the table above that it matches. If there are multiple matches, use the longest-match rule to identify where the packet would be forwarded.
(i) 81:3b:15:49
(ii) 81:3c:56:14
(iii) 81:3c:85:2e
(iv) 81:4a:35:29
(v) 81:47:21:97
(vi) 81:43:01:c0
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