layer 3 switch

 

Ideas ：

s1 and s2 In between eth trunk , Change the interface to trunk Then I do stp, The following two switches are vlan1 2

And to the company pc Add stp And then there was s1 2 Deficiency of ip Configure and complete dhcp Distribute , Get up after you finish ospf Create a new one vlan rise svi Instead of portswitch

Then write it by default

Between three switches eth trunk

stp

svi

vrrp

dhcp

ospf

eth-trunk part

 

 

 

 

stp part

 

 

 

 

 

 

 

vrrp part

 

 

 

 

 

dhcp part

 

 

use svi Instead of  

ospf part