Cisco 2960X Etherchannel with LACP

[TorontoCam]

I have a port channel created using two fiber interfaces that connects two switches together. In addition to slow data across switches, when one link goes down we loose connection between devices.

Port config (same on both switches)

Complete SW configs attached.

interface GigabitEthernet1/0/27
 description Tie to AYRSLS-SW1 Gi1/0/27
 switchport trunk allowed vlan 1,100-109
 switchport mode trunk
 srr-queue bandwidth share 1 30 35 5
 priority-queue out
 mls qos trust cos
 auto qos trust
 channel-protocol lacp
 channel-group 1 mode active
!
interface GigabitEthernet1/0/28
 description Tie to AYRSLS-SW1 Gi1/0/28
 switchport trunk allowed vlan 1,100-109
 switchport mode trunk
 srr-queue bandwidth share 1 30 35 5
 priority-queue out
 mls qos trust cos
 auto qos trust
 channel-protocol lacp
 channel-group 1 mode active

[Reza Sharifi]

What is the output of sh etherchannel summary"?

Also, any errors in the physical interface?

Is the cpu running ok?

Have you tried a different protocol like PAGP or mode on?

HTH

[TorontoCam]

AYRSLS-SW1#sh etherchannel summary
Number of channel-groups in use: 1
Number of aggregators:           1

Group  Port-channel  Protocol    Ports
------+-------------+-----------+-----------------------------------------------
1      Po1(SU)         LACP      Gi1/0/27(P) Gi1/0/28(P)

CPU utilization for five seconds: 24%/0%; one minute: 24%; five minutes: 24%

Haven't tried another protocol yet.

[Reza Sharifi]

Ok, Portchannel looks good and so it CPU. Can you try mode "on" (no protocols) and test the redundancy again? Once more option, can you change one side of the connection from active to passive and test?

HTH

[TorontoCam]

Switching to passive on one end doesn't make a difference. If I shut an individual port, the link remains /wout packet loss.

The etherchannel /w lacp runs across two fiber interfaces.

One thing I noticed is that if I unplug a fiber cable, the link light remains on. The switch says the port is still connected. That's probably why the trunk is not working as expected.

Any ideas why the interface would show as connected (/w link light) if the cable is removed from the SFP?

[mattjones03]

Hi,

What is the current IOS running on the Cisco Catalyst 2960X switches?

[TorontoCam]

c2960x-universalk9-mz.152-2.E6

[Jewgeni Uschegow · Accepted solution]

Hi,

try to do port-channel load-balance src-dst-mac.

[TorontoCam]

That fixed the transfer speed issues across the switches!
SFP / interface still shows connected when fiber unplugged though.