一直以爲一個SVI一個MAC地址的，今天看某無線的設計拓撲的，同事問了我這樣一句，我愣了一下想應該是一個vlan接口一個mac地址吧，同事會心的一笑...
於是我搭個簡單的拓撲驗證了一下。
Switch# sh int vlan 2
Vlan2 is up, line protocol is up
Hardware is CPU Interface, address is 0001.96c6.de61 (bia 0001.96c6.de61)
Internet address is 201.101.12.1/24
MTU 1500 bytes, BW 100000 Kbit, DLY 1000000 usec,
Switch# sh int vlan 3
Vlan3 is up, line protocol is up
Hardware is CPU Interface, address is 0001.96c6.de61 (bia 0001.96c6.de61)
Internet address is 202.101.123.1/24
MTU 1500 bytes, BW 100000 Kbit, DLY 1000000 usec,
Switch#sh int vlan 4
Vlan4 is up, line protocol is up
Hardware is CPU Interface, address is 0001.96c6.de61 (bia 0001.96c6.de61)
Internet address is 202.101.122.1/24
MTU 1500 bytes, BW 100000 Kbit, DLY 1000000 usec,
發現他笑對了。所有的SVI地址都一樣..慚愧