Top-C3560X-48P-E 2 units:L3 mode, PVST, Downlink port Trunk, HSRP(vlan 10, 20, 30 ...)OS version-15.2(4)E9 Sub-C9300-48P-A several groups:L2 mode, RSTP, Uplink port TRUNKOS version-16.12.4 L3#1int vlan 10ip address 192.168.109.2 255.255.255.0sta...
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