09-16-2013 04:50 PM - edited 03-01-2019 11:15 AM
Hi,
I am investigating a migration from the VMware vDS to the Nexus 1000V - is there a recommendation for the how many uplink port-profiles (port-profile type ethernet) there should be?
The current VMware vDS has two uplink ports, with one pNIC from each host in each.
If I create two Nexus 1000V port-profiles to match this, as follows:
port-profile type ethernet uplink1
vmware port-group
switchport mode trunk
switchport trunk allowed vlan n
no shutdown
system vlan n
state enabled
port-profile type ethernet uplink2
vmware port-group
switchport mode trunk
switchport trunk allowed vlan n
no shutdown
system vlan n
state enabled
Then add one NIC from a host to each, I receive the following error:
%VEM_MGR-SLOT3-2-VEM_SYSLOG_CRIT: VLAN_MISCONFIG : Eth3/1 and Eth3/2 are carrying vlans [n]. Configure a port-channel on a port-profile carrying multiple uplinks on the same VEM to avoid network loops. (Ignore if any of these ports are configured as local SPAN destination)
I presume this could be avoided by using 'channel-group auto mode on mac-pinning' on the port-profiles - my questions are:
- Is it necessary to have multiple port-profiles in a port-channel or can one host have two uplinks in a single ethernet port-profile?
- If a single port-profile is recommended - does this mean one is required per host?
- If multiple port-profiles & port-channels are recommended - is this still on a per-host basis or could multiple hosts be added to the same uplink port-profiles?
Thanks
J
09-19-2013 06:40 AM
Hello,
You can use one Ethernet port-profile with a channel-group command (like 'channel-group auto mode on mac-pinning') and assign it to all the vmnic interfaces that need to carry the same set of VLANs
The same port-profile can be used on other hosts too. The N1k would automatically bundle (port-channel) the interfaces that belong to the same ESX host (accomplished through the 'channel-group auto' command)
If you need the interfaces to carry separate sets of VLANs, then you need a different port-profile.
Port-profile is just a container for a common set of configuration that you can apply for multiple interfaces across multiple hosts.
Thanks,
Shankar
09-24-2013 10:01 PM
Hi James,
Check following link.
http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9902/guide_c07-704280.html#wp9000161
Regards,
Shahzad
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