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Beginner

Add FC uplinks to UCS 6248

I currently have my UCS environment setup with a single FC connection from 6248 to Nexus5548UP

 

UCS-A ------> 5548-1 (VSAN700)

USC-B ------> 5548-2 (VSAN701)

 

UCS side looks like this:UCS-A FC port.PNG

 

Nexus 5548 port looks like this:

interface fc2/7
switchport description FC Uplink to UCS-6248-A
switchport trunk mode off
no shutdown

 

If I were to add a 2nd (Or 2nd, 3rd and 4th) link between each FI and it's respective Nexus switch, is there any programming I need to do specifically on either the FI or the Nexus5k to prevent some kind of unforeseen FC disaster?

 

Thanks!

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Cisco Employee

Re: Add FC uplinks to UCS 6248

If your goal is to add more uplinks, you should configure FC Port channels on the UCS and N5K side.

 

https://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/ucs-manager/GUI-User-Guides/Storage-Mgmt/3-1/b_UCSM_GUI_Storage_Management_Guide_3_1/b_UCSM_GUI_Storage_Management_Guide_3_1_chapter_01100.pdf

 

If you add new links, the vHBA will not pin to the new uplinks until the servers are rebooted.

Cisco Employee

Re: Add FC uplinks to UCS 6248

In the newer firmware, You can try resetting connectivity of HAB(one at a time) from the equipment tab instead of rebooting. After resetting HBA initiator will FLOGI into Fabric Interconnect, pin to available uplink. 

Equipment  > Chassis >Servers > Server X > Adaptters > Adapter 1 > HBAs >HBA1
Cisco Employee

Re: Add FC uplinks to UCS 6248

Like Wes says, configure your FI/N5K FC links in a SAN port-channel, and then the vHBA/vfc's will be pinned to a PO,,, and the pinning/load distribution will be much better...

 

Kirk...

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