troubleshooting Question

Configuring trunk ports on a Cisco Catalyst 9300

Avatar of Steve Bantz
Steve BantzFlag for United States of America asked on
NetworkingCisco
7 Comments2 Solutions802 ViewsLast Modified:
I have four Cisco 9300 switches that are stacked and serving as access layer switches.  Each switch in the stack has a 1GB network module that I had planned on using to create a linked aggregate trunk to our two Dell Force 10 core switches. The core switches are a master/slave arrangement so everything physically connected to the master is also physically connected to the slave for fault tolerance.

I wanted to make sure that I have this configured correctly in my lab environment.  This stack is replacing a Cisco 4506 chassis that currently has two trunk ports that are just regular 1GB ports on two switch blades in the chassis.

On the 9300 switch, I have the following set to define the port channel and then assigning the channel to the interfaces serving as trunks.

interface Port-channel30
 description *** TRUNK TO DELL FORCE 10 CORE SWITCHES ***
 switchport mode trunk


then on the interfaces:  _1 is the master and _2 is the slave core switch

interface GigabitEthernet1/1/1
 description *** TRUNK TO FORCE 10 4820_1 ***
 switchport mode trunk
 channel-group 30 mode active

interface GigabitEthernet2/1/1
 description *** TRUNK TO FORCE 10 4820_2 ***
 switchport mode trunk
 channel-group 30 mode active

interface GigabitEthernet3/1/1
 description *** TRUNK TO FORCE 10 4820_1 ***
 switchport mode trunk
 channel-group 30 mode active

interface GigabitEthernet4/1/1
 description *** TRUNK TO FORCE 10 4820_2 ***
 switchport mode trunk
 channel-group 30 mode active


My question is, is this the correct way to do this and am I missing anything?  Would I be better off creating two different port channels and assigning one to the trunk ports connecting to the master and another connecting to the slave core switch?  What I am trying to achieve is a 2GB trunk port to the core switch master and slave for fault tolerance.
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