Cisco 5672 interface vfc or int vfc-port-channel do not bind Etherchannal (port-channel)

[Beacon Bits]

Hi All,

I created a Etherchannel on 5672 with two interfaces in them for upstream to our new Nexus c93180 for FCoE. But 5672 does not bind Etherchannel into the int vfc 93. The error says:

"ERROR: fcoe_mgr: VFC cannot be bound to Port Channel as it has more than one member (err_id 0x4207002C)"

then..

I created int vfc-port-channel993 and tried to bind the same port-channel993 but it created error again, though cisco docmentation clearly says about binding the port-channel in single vfc interface or vfc-port-channel. The error says on int vfc-port-channel:

"Error: vfc-po993: Bind to port-channel993 failed: VFC cannot be bound to Port Channel as it has more than one member"                                                 ^
VFC interface creation failed at '^' marker. "

It seems to me that it's some sort of a bug but I can't find any help or bug informtation.

Any help would be appreciated!

Thanks!

Regards,

Shai

[Kirk J]

Greetings.

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/operations/fcoe/513_n1_1/ops_fcoe/fcoe_vpc_config_example.html

Note To run FCoE over a vPC topology, the port channel can only have a single member interface.

Thanks,

Kirk...

[Beacon Bits]

Hi Kirk - Thanks for your reply.

But on downstream switch i.e; Nexus Cisco c93180YC-FX is able to have port-channel with two members bound to vfc interface and it works fine though it is working c93180YC-FX working in VPC domain.

Unless one member per port-channel is the only limitation only on the 5000 series switches. what do you think?

Regards,

Beacon Bits

[Kirk J]

I will do some more checking, but the docs were from the N5K line.

Depending on the config, VPCs kind of violate SAN separate fabric best practice guidelines.

The N9K docs don't seem to list the PC in a VPC single link limitation, https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/FCoE/configuration/guide/b_Cisco_Nexus_9000_Series_NX-OS_FCoE_Configuration_Guide_7x/b_Cisco_Nexus_9000_Series_NX-OS_FCoE_Configuration_Guide_7x_chapter_011.html#id_25415

Thanks,

Kirk...