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UCS FI F-Port Channeling vs. F-Port Trunking

https://www.cisco.com/c/en/us/products/collateral/storage-networking/mds-9000-nx-os-software-release-4-1/white_paper_c11-459263.html

 

What does "feature fport-channel-trunk" do exactly? I don't understand the difference between an F-Port Trunk and an F-Port Channel as it relates to a typical UCS FI in End Host Mode. Does "feature fport-channel-trunk" do both?

 

Can you please share your NPV edge switch and NPIV core switch interface configurations, for a typical FI that has SAN port channels configured?

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2 ACCEPTED SOLUTIONS

Accepted Solutions
Cisco Employee

Re: UCS FI F-Port Channeling vs. F-Port Trunking

Hi,

Fport-trunk allows an F-port to do  trunking, i.e. allow multiple VSANs on an F-port, just like an ISL.

Fport-Port-Channeling allows an F-port to do  Port-Channel on an F-port.

i.e. on a Nexus 5k you enable both features by a single command:

5596-b(config)# feature fport-channel-trunk 

 

EXAMPLE:

On UCS, you enable FC Uplink trunking on the FI.

Step 1   In the Navigation pane, click the SAN tab.
Step 2   On the SAN tab, expand SAN > SAN Cloud.
Step 3   Click the node for the fabric where you want to enable FC uplink trunking.
Step 4   In the Work pane, click the General tab.
Step 5   In the Actions area, click Enable FC Uplink Trunking.
Step 6  

If Cisco UCS Manager GUI displays a confirmation dialog box, click Ye

 

 

Advocate

Re: UCS FI F-Port Channeling vs. F-Port Trunking

Does "feature fport-channel-trunk" do both? ==> Yes !

This is a Feature between a NPV (UCS FI in FC end host mode) and a NPIV node.

If you would not use it, you would Need one link per VSAN between NPV and NPIV. Therefore trunking is a link optimization. And channeling allows scaling of bandwidth between NPV and NPIV.

2 REPLIES 2
Cisco Employee

Re: UCS FI F-Port Channeling vs. F-Port Trunking

Hi,

Fport-trunk allows an F-port to do  trunking, i.e. allow multiple VSANs on an F-port, just like an ISL.

Fport-Port-Channeling allows an F-port to do  Port-Channel on an F-port.

i.e. on a Nexus 5k you enable both features by a single command:

5596-b(config)# feature fport-channel-trunk 

 

EXAMPLE:

On UCS, you enable FC Uplink trunking on the FI.

Step 1   In the Navigation pane, click the SAN tab.
Step 2   On the SAN tab, expand SAN > SAN Cloud.
Step 3   Click the node for the fabric where you want to enable FC uplink trunking.
Step 4   In the Work pane, click the General tab.
Step 5   In the Actions area, click Enable FC Uplink Trunking.
Step 6  

If Cisco UCS Manager GUI displays a confirmation dialog box, click Ye

 

 

Advocate

Re: UCS FI F-Port Channeling vs. F-Port Trunking

Does "feature fport-channel-trunk" do both? ==> Yes !

This is a Feature between a NPV (UCS FI in FC end host mode) and a NPIV node.

If you would not use it, you would Need one link per VSAN between NPV and NPIV. Therefore trunking is a link optimization. And channeling allows scaling of bandwidth between NPV and NPIV.

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