UCS 6248UP Migrate From Catalyst Switch to Nexus 9300

[chrisimola1]

Dear All,

To our network infrastructure we have 2 different stack switches 3750 (Stack1 & Stack2) and a UCS 6248UP with UCS Manager 2.2(3f) which connects to Both stack switches with port-channer and DJL2 enabled.

More Specific For Port-channel connectivity:

• FabricA to Stack1: Vlan 6,10
• FabricB to Stack1: Vlan 6,10
• FabricA to Stack2: Vlan 2,21
• FabricB to Stack2: Vlan 2,21

Links between FI and Cisco Switches are with SFP to RJ45.

That implementation is working  for about 4 Years without any issues. We need to migrate our network to  Cisco Nexus 93108. Earlier this morning we tried to move one port-channel (FabricB to Stack1: Vlan 6,10) from FabricB to Nexus with Break Out Cables (QSFP-4X10G-AOC3M) but the link never become active (no logs to Cisco nexus)  and our Netapp appliances ports which are connected direct to FIs (FCoE) become in failed state with error: enm source pinning failed.

Second port-channel (FabricB to Stack2: Vlan 2,21) it remained to Stack2 without interruption. Finally, after we made a roll back (Disconnect from Nexus and connect again to Stack2) links and Netapp appliances ports become active.

My question is how  Links (QSFP-4X10G-AOC3M) From Nexus to FIs will be recognized  and become active  and how we can avoid the enm source pinning failed error for the migration process.

Thank you.

[Kirk J]

Greetings.

You got the ENM source pinning error while trying to make the new N9K connections the new egress ports for vlans 6,10 because the port/port-channel never came up, and the UCSM is telling you it can't pin the various vnics using vlans 6,10 to an active uplink that carries vlans 6,10.

You may want to open a TAC case for the Nexus 93108 and confirm the firmware, ports being used for breakout support being in the same port-channel, can be downlinks, etc.

Thanks,

Kirk... 

[chrisimola1]

Hi Kirk,

Break Out Cables (QSFP-4X10G-AOC3M) has been configured to nexus and it seems to work.Is there something that i must configure (or reconfigure)  to UCS Uplinks interfaces in order Links to become active?

I want to mention that Break Out Cables has been installed to existing Uplink interfaces which are already  connected with Stack Switch with SFP to RJ45 module and it seems that are not recognized.

Thank you.