Week 4 worksheet — IPv4, the network layer and static routing
2 — The Next Hop
What changes at each hop
Fill the following table based on your observations from the
echo request in the three captures.
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Src MAC |
Dst MAC |
Src IP |
Dst IP |
TTL |
| PC1 ↔ SW1 |
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| R1 ↔ R2 |
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| PC2 ↔ SW2 |
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3 — The Error Channel
Locating the source of the error messages
| Failure |
Anything on the wire? |
Reported by |
Type/Code |
| No route locally |
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| No route at a router |
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| Host absent |
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| Port closed |
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| Fragmentation needed |
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| TTL exceeded |
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4 — Inter-VLAN Routing
| Capture |
Source MAC |
Destination MAC |
VLAN id in tag |
Source IP |
Destination IP |
PC1 cable -> |
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PC1 cable <- |
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R1 cable -> |
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R1 cable <- |
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PC3 cable -> |
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PC3 cable <- |
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