Configuration in both Stack Switch A and B
- interface range G1/0/25, G2/0/25
- shutdown !! best practice
- channel-group 12 mode active
- switchport trunk encap dot1q
- switchport mode trunk
- switchport trunk allow vlan 2,3,4
- interface port-channel 12
- switchport trunk encap dot1q
- switchport mode trunk
- switchport trunk allow vlan 2,3,4 !! allow whatever vlan, here
- interface range G1/0/25, G2/0/25
- no shutdown !! do this after configured both sides
Benefits
- Redundancy
- High Bandwidth
Port-channel ID is locally significant.
Ether-channel formation on different "Port-channel ID" is theoretically possible.
Want to see from Cisco, click HERE
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