Configure trunk ports on Cisco switch (CISCO PACKET TRACER)

How to configure trunk ports on Cisco switch
Two Trunk Encapsulations:
1. isl: VLANs are tagged by encapsulating each frame using the Cisco ISL protocol.
no longer supported across all Cisco Catalyst switch platforms.
2. dot1q: VLANs are tagged in each frame using the IEEE 802.1Q standard protocol, except for the native VLAN.
Configuring trunk port:
CORE_SW1 and SW21
conf t
interface FastEthernet0/1
switchport trunk encapsulation dot1q
switchport mode trunk
switchport nonegotiate
switchport trunk native vlan 1
switchport trunk allowed vlan 1,300
end
wr
!
Verification:
show interfaces Fa0/1 switchport
show interfaces Fa0/1 trunk
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