EtherChannel Configuration in Layer 2 Cisco Devices | LACP Configuration | Technical Hakim
EtherChannel Configuration in Layer 2 Cisco Devices | LACP Configuration | Technical Hakim.
In this video I have shown how to configure Link Aggregation Configuration Protocol [LACP] in cisco switches.
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"EtherChannel in Computer Network": EtherChannel is a port link aggregation technology in which multiple physical port links are grouped into one logical link. It is used to provide high-speed links and redundancy. A maximum of 8 links can be aggregated to form a single logical link.
Here is a topology in which two switches are connected with each other. Each link between the switches is 100mb/s.
Now, suppose if we want to send traffic of more than 100mb/s then we have congestion as the link between the switches is of 100mb/s only and packets will start dropping. Now, to solve this problem, we should have a high-speed link between the switches. To achieve this, we can simply replace the current link with a high-speed link, or we can bundle up more than one link of the same speed of 100mb/s. By forming an EtherChannel, we can bundle up more than one link into a single logical link.
But, as we connect the switches with more than one link, STP (Spanning Tree Protocol) will block the least redundant link. As we have made an EtherChannel, all the links (that are grouped as one logical link k) will be treated as single logical links therefore no link will be blocked and also, it will provide us high-speed link and redundancy in our network.
Criteria – To form an EtherChannel, all ports should have:
Same duplex
Same speed
Same VLAN configuration (i.e., native VLAN and allowed VLAN should be same)
Switch port modes should be the same (access or trunk mode)
EtherChannel protocols – To form an EtherChannel, there are 2 protocols, port aggregation Protocol (PAgP) and link aggregation control protocol (LACP).
Link Aggregation Control Protocol (LACP) –
Link Aggregation Control Protocol is an IEEE protocol, originally defined in 802.3ad, used to form an EtherChannel. This protocol is almost similar to Cisco PAgP. There are different modes in which we can configure the interface. These are named as
ON: In this mode, the interface will be a part of EtherChannel but no negotiation takes place
Active: In this mode, the interface will continuously attempt to convert the other side interface into an EtherChannel.
Passive: In this mode, the interface will become a part of EtherChannel if and only if it is requested by the opposite interface.
Off: No EtherChannel configured on the interface.
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ccna 200-301: configure and verify (layer 2/layer 3) etherchannel (lacp).
Know How to configure Layer 2 and Layer 3 EtherChannel - CCNA 200-301.
In this video I have discussed about Layer 2 and Layer 3 EtherChannels as it relates to Cisco networking and the CCNA (200-301) exam.
Know How to Configure Layer 2 Etherchannel on Cisco - Video 20 GNS3 Labs for CCNA.
This video covers the following objectives in the current ccna exam blueprint:
2.4 Configure and verify (Layer 2/Layer 3) Ether Channel (LACP).
etherchannel requirements
etherchannel vs portchannel
etherchannel modes
etherchannel configuration
PAgP
LACP
Load Balancing
etherchannel / Port- Channel between two switches and Routers.
Configuration and more.
Ether Channel is a link aggregation technology or port-channel architecture used primarily on Cisco switches. It allows grouping of multiple physical Ethernet links to create one logical Ethernet link for the purpose of providing fault-tolerance, load balancing and high-speed links between switches, routers and servers. This provides load balancing, efficient use of all link (since Spanning Tree would block most of them) and more.
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