Packet Tracer – Troubleshooting EtherChannel
Contents
1. erChannel assignments Verify that the switches are configured as indicated Step 2 Correct port channel assignments Correct any switch ports that are not assigned to the correct EtherChannel port 2013 Cisco and or its affiliates All rights reserved This document is Cisco Public Page 1 of 2 Packet Tracer Troubleshooting EtherChannel Part 3 Identify and Correct Port Channel Protocol Issues Step 1 Identify protocol issues In 2000 the IEEE released 802 3ad LACP which is an open standard version of EtherChannel For compatibility reasons the network design team chose to use LACP across the network All ports that participate in EtherChannel need to actively negotiate the link as LACP as opposed to PAgP Verify that the physical ports are configured as indicated Step 2 Correct Protocol issues Correct any switch ports that are not negotiating using LACP 2013 Cisco and or its affiliates All rights reserved This document is Cisco Public Page 2 of 22. fafi CISCO Cisco Networking Academy Mind Wide Open EE gt ee Packet Tracer Troubleshooting EtherChannel Topology S1 7 FO 23 FO 23 J i Port Channel 3 Fo 24 Foy 24 Gi 1 G1 2 G1 1 FO 21 LACP FO 21 Fo 22 Port Channel 5 Port Channel 6 Port Channel 1 Port Channel 2 Fo 21 Fo 21 Fo 22 FO 22 G1 1 G1 2 G1 1 F023 F0 23 Port Channel 4 a3 FQ 24 FO 24 S4 Objectives Part 1 Examine the Physical Layer and Correct Switch Port Mode Issues Part 2 Identify and Correct Port Channel Assignment Issues Part 3 Identify and Correct Port Channel Protocol Issues Background Four switches were recently configured by a junior technician Users are complaining that the network is running slow and would like you to investigate Part 1 Examine the Physical Layer and Correct Switch Port Mode Issues Step 1 Look for access ports Examine the switches When physical ports are assigned to an EtherChannel port they behave as one Each pair will either be operational or down They will not be mixed with one port green and the other port orange Step 2 Set ports to trunking mode a Verify that all physical ports in the topology are set to trunking Correct any that are in access mode b Correct any EtherChannel ports that are not set to trunking mode Part 2 Identify and Correct Port Channel Assignment Issues Step 1 Examine port channel assignments The topology illustrates physical ports and their Eth
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