1030S connect to Cisco Nexus 9K

sunny358

hi all,

i'm trying to connect A10-1030s 10GB port to 2 Cisco Nexus 9K.
Using virtua; Port Channel (VPC) from 1030s to 2 Nexus 9k, but have looping error info.
Is it can?

Thanks.

tmitsuhata

Hi Sunny358,
I think you just need to configure a (Layer 2) trunk on your A10 3030S as it is a vPC peer device. If you already have the trunk configuration on the 3030S and see the "looping error" (assuming on the Nexus 9k side), there seems to be a configuration issue on the vPC switches (Nexus 9k).
By the way, are you using LACP on the vPC link?

Please get the "show trunk" output (or "show interface trunk" in ACOS 4.x version) for reference?

Thanks.

sunny358

Thanks tmitsuhata reply.

Below is show trunk info on A10

Trunk ID : 4 Member Count: 2
Trunk Name : None
Trunk Status : Up
Trunk Type : Dynamic (LACP)
Admin Key : 1004
Members : 5 6
Cfg Status : Enb Enb
Oper Status : Up Up
Ports-Threshold : None
Working Lead : 5

And it is using LACP on the vPC link
Below is config.
N9K1
------------------------------
interface port-channel31
switchport mode trunk
switchport trunk allowed vlan 1,12,30
vpc 31

interface Ethernet1/10
switchport mode trunk
switchport trunk allowed vlan 1,12,30
channel-group 31 mode active
----------------------------------
N9K2
interface port-channel31
switchport mode trunk
switchport trunk allowed vlan 1,12,30
vpc 31

interface Ethernet1/10
switchport mode trunk
switchport trunk allowed vlan 1,12,30
channel-group 31 mode active

Is it correct?

sunny358

“looping error" on A10 sides

tmitsuhata

I see you are using LACP for vPC connection. Since the 1010S is a vCP peer device, the configuration should be quite simple. As per your output, it indeed shows the operational status as UP (even with LACP) so it should be fine.
Since you're seeing the "looping error" reported on A10 device (meaning the packet came back to itself), you may want to double check your Nexus side configuration.
According to your Nexus config, it seems missing some configuration such vpc domain cnonfig and vpc peer-link et. al. (I'm not sure if you omitted or not.)
I've attached the sample configuration of vPC using A10 device and Nexus provided by my colleague (Thanks to Colin) for your reference.
Hope it helps.

sunny358

Thanks