I have to switches one in L3 an the other in L2. Several vlans on the network.
Should i use a trunk connection between them or a etherchannel o port channel?
what is the best way and when to use this options?
thanks in advance for your answer.
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Yes,If you have only one interface for uplink, you need to configure it as a trunk (If you have multiple VLAN’s in your environment).
Something like this (is a minimal config):
!interface GigabitEthernet1/0/24 switchport trunk encapsulation dot1q switchport trunk allowed vlan 10,20,30,40,50 switchport mode trunk!
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