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Flow control preventing LACP etherchannel 6880X to 3850

roger perkin
Beginner
Beginner

I am trying to setup a L2 etherchannel between 6880X and a 3850 stack using 10G SFP's 

I am getting this error 

CANNOT_BUNDLE2: Te2/2/13 is not compatible with Te1/2/13 and will be suspended (flow control receive of Te2/2/13 is unknown, Te1/2/13 is on)

What is the optimum setting for flow control in this situation? 

I have read that switch to switch flow control has limited benefits?

http://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/24330-185.html

The best use is on access ports to end hosts where the host output buffer is potentially as large as the virtual memory

Thanks

Roger

2 Replies 2

Reza Sharifi
Hall of Fame Expert Hall of Fame Expert
Hall of Fame Expert

Usually below output for flow control is default.

input flow-control is on, output flow-control is off

What is the output of "sh int te1/2/13" and 2/2/13?

HTH

Hi,

I have the same issue. But I'm trying to configure etherchannel between C6500 and Nexus

Te2/1/20 is not compatible with Te1/1/20 and will be suspended (Operational flow control receive of Te2/1/20 is on, Te1/1/20 is disagree)

TenGigabitEthernet1/1/20 is up, line protocol is up (connected)
Full-duplex, 10Gb/s, media type is 10Gbase-CU3M
  input flow-control is off, output flow-control is off

TenGigabitEthernet2/1/20 is up, line protocol is up (connected)
  Full-duplex, 10Gb/s, media type is 10Gbase-CU3M
  input flow-control is on, output flow-control is off

And I can't switch input flow-control on, on the Te1/1/20 or switch off on the Te2/1/20.

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