Consider hosts X, Y, Z, W and learning bridges B1, B2, B3, with initially empty forwarding tables, as in Figure 3.39.
(a) Suppose X sends to Z. Which bridges learn where X is? Does Y's network interface see this packet?
(b) Suppose Z now sends to X. Which bridges learn where Z is? Does Y's network interface see this packet?
(c) Suppose Y now sends to X. Which bridges learn where Y is? Does Z's network interface see this packet?
(d) Finally, suppose Z sends to Y. Which bridges learn where Z is? Does W's network interface see this packet?
Figure 3.39
![535_d2cb1778-3cb2-40e3-952d-e0dc5fe7fa9d.png](https://secure.tutorsglobe.com/CMSImages/535_d2cb1778-3cb2-40e3-952d-e0dc5fe7fa9d.png)