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Occasional Contributor II

Cisco 3750E Stack & Aruba 3400 Controller -- Port Channel Issue

Hello. The issue I am having is when I put one port of an Aruba controller in a Port channel I can't ping the default gateway. I only have this one port connected to the switch to try and rule out any other issues. Once I take the one port out of the Aruba port channel and put it just pure trunked I can ping the default gateway. My laptop on the same network can ping the controller in both scenarios. Also once I do this, I lose all remote access to the controller (web/ssh).

Cisco Port Config:

 

description Wireless Controller Port 1

switchport trunk encapsulation dot1q

switchport mode trunk

switchport nonegotiate

flowcontrol receive on

channel-group 30 mode on

 

interface Port-channel30

description Port Channel for Wireless Controller

switchport trunk encapsulation dot1q

switchport mode trunk

switchport nonegotiate

flowcontrol receive on

spanning-tree portfast trunk

 

Aruba Side

interface gigabitethernet 1/1

description "GE1/1" trusted trusted vlan 1-4094

switchport mode trunk

switchport trunk allowed vlan 1-4094

 

interface port-channel 0

add gigabitethernet 1/1

trusted vlan 1-4093

switchport mode trunk

switchport trunk native vlan 70

switchport trunk allowed vlan 1-4094

spanning-tree portfast

 

ArubaOS 6.1.3.1

Guru Elite

Re: Cisco 3750E Stack & Aruba 3400 Controller -- Port Channel Issue

 Try this on the Aruba Controller:

 

interface port-channel 0

trusted.

 


*Answers and views expressed by me on this forum are my own and not necessarily the position of Aruba Networks or Hewlett Packard Enterprise.*
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Occasional Contributor II

Re: Cisco 3750E Stack & Aruba 3400 Controller -- Port Channel Issue

Adding the trusted to the port channel now allowes me to remotely get into the controller, but I still can't ping the default gateway.

Guru Elite

Re: Cisco 3750E Stack & Aruba 3400 Controller -- Port Channel Issue

What is the default gateway?  Can you see it in your ARP table?

 


*Answers and views expressed by me on this forum are my own and not necessarily the position of Aruba Networks or Hewlett Packard Enterprise.*
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Occasional Contributor II

Re: Cisco 3750E Stack & Aruba 3400 Controller -- Port Channel Issue

Nothing in arp. 

Guru Elite

Re: Cisco 3750E Stack & Aruba 3400 Controller -- Port Channel Issue

Are you pinging From:

 

A client on the LAN, the controller or a router?

What device is the default gateway in this situation?

 

 


*Answers and views expressed by me on this forum are my own and not necessarily the position of Aruba Networks or Hewlett Packard Enterprise.*
ArubaOS 8.3 User Guide
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Occasional Contributor II

Re: Cisco 3750E Stack & Aruba 3400 Controller -- Port Channel Issue

When in port channel:

  Pinging from Cisco switch to controller = fail

  Pinging from controller to cisco switch = fail.

  Pinging from laptop in same subnet = is good

 

When in plain trunked port:

  everything works.

 

Cisco switch provides the default gateway.

Guru Elite

Re: Cisco 3750E Stack & Aruba 3400 Controller -- Port Channel Issue


bettism wrote:

When in port channel:

  Pinging from Cisco switch to controller = fail

  Pinging from controller to cisco switch = fail.

  Pinging from laptop in same subnet = is good

 

When in plain trunked port:

  everything works.

 

Cisco switch provides the default gateway.


Can you clear the ARP table on all devices and try again?

 


*Answers and views expressed by me on this forum are my own and not necessarily the position of Aruba Networks or Hewlett Packard Enterprise.*
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Aruba Employee

Re: Cisco 3750E Stack & Aruba 3400 Controller -- Port Channel Issue

A suggestion.

 

On the Cisco side:

 

interface xxxxx

 channel-protocol lacp
 channel-group 30 mode active

 

On the Aruba side:

 

interface gigabitethernet  1/1

 lacp group 0 mode passive

Occasional Contributor II

Re: Cisco 3750E Stack & Aruba 3400 Controller -- Port Channel Issue

Still no luck.  I have clear arp tables on both devices and no avail.

 

I did change everything over to LACP and still no luck.

 

interface gigabitethernet  1/1        

description "GE1/1"        

trusted        

trusted vlan 1-4094        

speed 1000        

duplex full        

lacp group 0 mode passive

 

interface port-channel 7        

trusted        

trusted vlan 1-4094        

switchport mode trunk        

switchport access vlan 70        

switchport trunk native vlan 70

 

Cisco:

 

sh eth sum

30     Po30(SU)        LACP      Gi1/0/39(P)

 

 

interface GigabitEthernet1/0/39  

description Wireless Controller Port 1

switchport trunk encapsulation dot1q  

switchport mode trunk  

switchport nonegotiate  

speed 1000  

duplex full  

channel-group 30 mode active

end

 

 

 

 

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