会社のネットワークトポロジを把握するにはどうすればよいでしょうか?

会社のネットワークトポロジを把握するにはどうすればよいでしょうか?

私は理解できます:

1. 3 floors(A, B, C), there is a WIFI AP with same APN but different BSSID in each floor.
2. Will get different IP different subnet if I connect to different WIFI AP
3. the router's MAC address remains same.

その他の出力:

Aフロア

IP: 10.204.100.12
subnet: 255.255.252.0
router: 10.204.103.254(MAC: for example 11:22:33:44:55:66)

$ traceroute 8.8.8.8
traceroute to 8.8.8.8 (8.8.8.8), 64 hops max, 52 byte packets
 1  10.204.1.178 (10.204.1.178)  1.575 ms  1.500 ms  1.517 ms
 2  10.204.103.254 (10.204.103.254)  63.216 ms  81.889 ms  9.167 ms

Bフロア

IP: 10.204.109.44
subnet: 255.255.252.0
router: 10.204.111.254(same 11:22:33:44:55:66)

$ traceroute 8.8.8.8
traceroute to 8.8.8.8 (8.8.8.8), 64 hops max, 52 byte packets
 1  10.204.1.178 (10.204.1.178)  1.476 ms  1.510 ms  1.465 ms
 2  10.204.111.254 (10.204.111.254)  23.543 ms 31.441 ms  19.712 ms

Cフロア

IP: 10.204.118.132
subnet: 255.255.252.0
router: 10.204.119.254(same 11:22:33:44:55:66)

$ traceroute 8.8.8.8
traceroute to 8.8.8.8 (8.8.8.8), 64 hops max, 52 byte packets
 1  10.204.1.178 (10.204.1.178)  1.743 ms  1.314 ms  1.688 ms
 2  10.204.119.254 (10.204.119.254)  43.321 ms 71.116 ms  59.281 ms

だから、こんな感じかな? ここに画像の説明を入力してください

私が理解できないのは

1. why router with same MAC address can have different IP?
2. what is 10.204.1.178? this is in different subnet, why I can access it?
3. where might 10.204.1.178 be?
4. any other strange thing?

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