Nexus 5672UP -> port channel teaming windows server 2019

[PatrickK893]

Hello,

I'm new in switching... so sorry for this (hopefully) simple question...

I have two nexus 5672 with a fex connected on each nexus.

Now I have a HPE StoreEasy with windows 2019 installed and 4 nics (1Gig each) in it.  I plugged two 1 gig copper to each fex and built a port-channel. So now there are two nics on Nexus 1 Fex 1 and two nics on Nexus 2 Fex 2.

Portchannel comes up and teaming on the server works.

When I copy something from the HPE StoreEasy server to another server in the same network I have the full speed of the 4 nics.

If I copy something from another server (connected with 10Gig)  to my "4 nic port channel" -Server, I have only 1 Gig.

nexus 1
interface port-channelXXXX
description SERVER_VLANXX
no lacp suspend-individual
switchport access vlan XX
spanning-tree port type edge
spanning-tree bpdufilter disable
vpc 5

interface Ethernet111/1/25
description SERVER_VLANXX
switchport access vlan 25
channel-group 1018 mode active

interface Ethernet111/1/26
description SERVER_VLANXX
switchport access vlan 25
channel-group 1018 mode active

nexus 2

interface port-channelXXXX
description SERVER_VLANXX
no lacp suspend-individual
switchport access vlan XX
spanning-tree port type edge
spanning-tree bpdufilter disable
vpc 5

interface Ethernet111/1/25
description SERVER_VLANXX
switchport access vlan 25
channel-group 1018 mode active

int brief:

Po1018 25 eth access up none a-1000(D) lacp

vpc brief

vPC status
----------------------------------------------------------------------------
id Port Status Consistency Reason Active vlans
------ ----------- ------ ----------- -------------------------- -----------
5 Po1018 up success success xx

Any idea?

Thanks 

[Reza Sharifi · Accepted solution]

Hi,

That is the correct behavior of a Portchannel. When you have multiple physical links in a Portchannel, you can only use one physical link at a time per flow or per source. So, in your case, you have 4 1Gig physical links and the max bandwidth you can get (per source) is 1Gig and not 4Gig. If you had 4 10Gig in PO, you would get a max of 10Gig and not 40Gig.

HTH                 

[PatrickK893]

Thanks I was not sure about that but that makes absolutley sense.

[MHM Cisco World]

Can I see topolgy?

MHM