一直以为一个SVI一个MAC地址的，今天看某无线的设计拓扑的，同事问了我这样一句，我愣了一下想应该是一个vlan接口一个mac地址吧，同事会心的一笑...
于是我搭个简单的拓扑验证了一下。
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,
发现他笑对了。所有的SVI地址都一样..惭愧
