Step 2:
Configure the PC hosts.
Step 3:
Erase the startup and VLAN configurations and reload the switches.
Step 4:
Load switch configurations.
Load the following configurations into the appropriate switch. All switches have the same passwords. The
privileged EXEC password is
class
. The password for console and vty access is
cisco
. As all switches are
Cisco devices, the network administrator decided to use
Cisco’s
PAgP on all port channels configured with
EtherChannel. Switch S2 is the root bridge for all VLANs in the topology.
Switch S1 Configuration:
hostname S1
interface range f0/1-24, g0/1-2
shutdown
exit
enable secret class
no ip domain lookup
line vty 0 15
password cisco
login
line con 0
password cisco
logging synchronous
login
exit
Lab
–
Troubleshooting EtherChannel
© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public.
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vlan 10
name User
vlan 99
Name Management
interface range f0/1-2
switchport mode trunk
channel-group 1 mode active
switchport trunk native vlan 99
no shutdown
interface range f0/3-4
channel-group 2 mode desirable
switchport trunk native vlan 99
no shutdown
interface f0/6
switchport mode access
switchport access vlan 10
no shutdown
interface vlan 99
ip address 192.168.1.11 255.255.255.0
interface port-channel 1
switchport trunk native vlan 99
switchport mode trunk
interface port-channel 2
switchport trunk native vlan 99
switchport mode access
Switch S2 Configuration:
hostname S2
interface range f0/1-24, g0/1-2
shutdown
exit
enable secret class
no ip domain lookup
line vty 0 15
password cisco
login
line con 0
password cisco
logging synchronous
login
exit
vlan 10
name User
vlan 99
name Management
spanning-tree vlan 1,10,99 root primary
Lab
–
Troubleshooting EtherChannel
© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public.
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interface range f0/1-2
switchport mode trunk
channel-group 1 mode desirable
switchport trunk native vlan 99
no shutdown
interface range f0/3-4
switchport mode trunk
channel-group 3 mode desirable
switchport trunk native vlan 99
interface vlan 99
ip address 192.168.1.12 255.255.255.0
interface port-channel 1
switchport trunk native vlan 99
switchport trunk allowed vlan 1,99
interface port-channel 3
switchport trunk native vlan 99
switchport trunk allowed vlan 1,10,99
switchport mode trunk
Switch S3 Configuration:
hostname S3
interface range f0/1-24, g0/1-2
shutdown
exit
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- Fall '15
- IP address, Network switch, Cisco IOS, trunk native vlan
