PVLAN and [v]PC on Nexus 3100-V

onyXMaster — Fri, 01 Mar 2019 21:42:36 GMT

Hi!

The https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus3000/sw/layer2/7x/b_Cisco_Nexus_3000_Layer_2_Switching_Config_7x/b_Cisco_Nexus_3000_Layer_2_Switching_Config_7x_chapter_011.html#con_1116740 mentions that "private VLANs do not provide port mode support for port channels... or vPCs". I wonder what "port mode" is being talked about in this case. Is this the PVLAN "port type" (promiscuous/isolated/community), which effectively means that PVLANs don't work with PC/vPC on N3K, or does this mean something other than that?

Re: PVLAN and [v]PC on Nexus 3100-V

Andrea Testino — Mon, 26 Feb 2018 17:05:32 GMT

Hi,

Great question! What the two limitations state is that any port with "switchport mode private-vlan..." cannot be bundled into a port-channel thus cannot be in a vPC either.

Example in my N3100-V (this will apply for all N9Ks as well):

N3K(config-if)# feature private-vlan 
N3K(config)# int e1/10
N3K(config-if)# switchport mode private-vlan promiscuous 
N3K(config-if)# channel-group 3 mode active 
command failed: port not compatible:[Port is PVLAN host] 
** You can use force option to override the port's parameters 
** (e.g. "channel-group X force") 
** Use "show port-channel compatibility-parameters" to get more information on failure 

N3K# sh run int e1/10

!Command: show running-config interface Ethernet1/10
!Time: Mon Feb 26 17:03:11 2018

version 7.0(3)I4(7)

interface Ethernet1/10
 switchport mode private-vlan promiscuous

I'll see if we can get the documentation to be a bit more explicit on this one. Appreciate you bringing it up!

Hope this helps.

- Andrea

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PVLAN and [v]PC on Nexus 3100-V

Re: PVLAN and [v]PC on Nexus 3100-V