PAgP Configuration Example

Ether Channel

Etherchannel Configuration

Layer 3 Etherchannel with PAgP

Spanning-Tree blocks redundant links and avoid Layer 2 loops. Etherchannels load balance the traffic between the redundant links and uses the bandwidth more efficient. Sp, how can we configure etherchannel? To understand more clear,  here is a basic Etherchannel Configuration scenario with Cisco PAgP (Port Aggregation Protocol).  You can check PAgP definition on wiki also. We have also done this with LACP before in another Link Aggregation example.

 


 

Here, two switches connected by four cable  from their gigabit ethernet ports. We will bundle four of the physical link into one logical link.

 


 

1. First of all, we must create logical interface with “port-channel” command and assign it an ip address. Before assigning an ip address, it is important to change this port to a Layer 3 port by “no switchport” command.

 

SW1 (config) # interface port-channel 1
SW1 (config-if) # no switchport
SW1 (config-if) # no shutdown
SW1 (config-if) # ip address 192.168.3.1 255.255.255.0
SW1 (config-if) # end

 

Lesson tags: Etherchannel, LAG, Link Aggregation, pagp
Back to: CCNP Enterprise 350-401 ENCOR > EtherChannels

Leave a Reply

Your email address will not be published.

IPCisco is the Winner of 2019 “Best Certification Study Journey” Category! We are also Finalist of 2020 & 2021 in Cisco IT Blog Awards!

Cisco-ITBlogAwards-2019-Winner-IPCisco-k
ITBlogAwards_2020_Badge-Finalist-BestCertStudy-ipcisco
ITBlogAwars-2021-ipcisco

CCNP Enterprise 350-401 ENCOR

Collapse
Expand
IPCisco on Social Media!