EtherChannel
The use of EtherChannel technology is a reliable way to ensure seamless port linking between Cisco switches and servers. This innovative port-channel architecture allows for the grouping of multiple Ethernet links into one logical backbone, thereby providing enhanced fault-tolerance and high-speed connectivity. And with its impressive ability to aggregate physical connections, Ether Channel guarantees that your network infrastructure can handle even the most complex traffic demands without compromising performance or reliability. An Ether Channel can be created from between two and eight active Fast, Gigabit or 10-Gigabit Ethernet ports.
Port Aggregation Protocol (PAgP) is a Cisco proprietary protocol.
There are two modes of PAgP:
Auto mode: it passively negotiates PAgP aggregation.
Desirable mode: that actively negotiates PAgP.
Note:
- Both the side ports have the same speed and duplex mode
- Use same Ethernet cable (Cat5e or Cat6 etc.)
Procedure for PAgP Implementation:
- Desirable Mode Configuration
- Auto Mode Configuration
- Verify
Desirable Mode Configuration:
Configure terminal interface range gigabitEthernet 1/0/23-24 channel-group 1 mode desirable channel-protocol pagp switchport trunk encapsulation dot1q switchport mode trunk end
Auto Mode Configuration:
Configure terminal interface range gigabitEthernet 1/0/23-24 channel-group 1 mode auto channel-protocol pagp switchport trunk encapsulation dot1q switchport mode trunk end
Verify:
To verify if the ether channel is formed use following show command:
show etherchannel summary
To verify the ether channel bandwidth use following show command:
show interfaces port-channel 1
his is an example of PAgP, Change the interface no. as per your requirement
Configure terminal interface range gigabitEthernet 1/0/23-24 channel-group 1 mode desirable channel-protocol pagp switchport trunk encapsulation dot1q switchport mode trunk end
Configure terminal interface range gigabitEthernet 1/0/23-24 channel-group 1 mode auto channel-protocol pagp switchport trunk encapsulation dot1q switchport mode trunk end