EtherChannel or other vendors call this Smartgroup, is a port link aggregation technology. In other words, a technology which is used to combine several physical links between switches or routers into one logical connection and treat them as single link.
A connection with a single link.
Add another link to get more than 1 Gbps will not work, because Spanning-tree protocol (STP) will block redundant links to prevent a loop.
Continue reading “EtherChannel – Port Link Aggregation”
Here’s an example of EtherChannel configuration.
|Port fa0/21 to port fa0/21 SW2
||Port fa0/21 to port fa0/21 SW1
|Port fa0/22 to port fa0/22 SW2
||Port fa0/22 to port fa0/22 SW1
|Port fa0/23 to port fa0/23 SW2
||Port fa0/23 to port fa0/23 SW1
|Port fa0/24 to port fa0/24 SW2
||Port fa0/24 to port fa0/24 SW1
|Port fa0/1 to PC1
||Port fa0/1 to PC3
|Port fa0/2 to PC2
||Port fa0/2 to PC4
PC1 : 10.10.10.1/24 – VLAN 10
PC2 : 10.10.20.1/24 – VLAN 20
PC3 : 10.10.10.2/24 – VLAN 10
PC4 : 10.10.20.2/24 – VLAN 20
Continue reading “Configuring an EtherChannel Link”