FAS2020 and multiple VLANS on VIF - one VLAN not responding

DerwentGuy — Thu, 05 Jun 2025 05:04:06 GMT

I was hoping someone could help me with a networking issue I have had with a single NetApp FAS2020 running Data ONTAP 7.3.6 and a Cisco 2960S running IOS 12.2(55)
The filer was originally configured as shown below:

vif create lacp vswif1 -b rr e0a e0b
ifconfig vswif1 172.16.80.92 netmask 255.255.255.0 mtusize 1500 mediatype auto
ifconfig vswif1 alias 172.16.80.91 netmask 255.255.255.0

I stopped all the interfaces and entered the following commands

vlan create vswif1 1 2 3 4
ifconfig vswif1-1 172.16.80.92 netmask 255.255.255.0 mtusize 1500
ifconfig vswif1-2 172.16.81.92 netmask 255.255.255.0 mtusize 1500
ifconfig vswif1-3 172.16.82.92 netmask 255.255.255.0 mtusize 1500
ifconfig vswif1-4 172.16.83.92 netmask 255.255.255.0 mtusize 1500

I then reconfigured my Cisco switch with the following commands from the config prompt

interface Po 4
switchport mode trunk
switchport trunk allowed vlan 1-4
switchport trunk encapsulation dot1q
switchport nonegotiate
spanning-tree guard loop
spanning-tree portfast trunk

I then configured two ports as follows to create the etherchannel

switchport mode trunk
switchport trunk allowed vlan 1-4
switchport trunk encapsulation dot1q
switchport nonegotiate
spanning-tree guard loop
spanning-tree portfast trunk
channel-protocol lacp
channel-group 4 mode active

Everything came up and I then tested pinging the netapp interfaces on all four vlans. Vlans 2, 3 and 4 responded OK but vlan 1 interface did not respond which is the address my VMWare hosts look for. These are the only vlans defined on the switch. The filers default route is to the VLAN 1 svi address on the switch. The routing table on the switch has the following entries:

172.16.0.0/24 is subnetted, 4 subnets
C 172.16.80.0 is directly connected, Vlan1
C 172.16.81.0 is directly connected, Vlan2
C 172.16.82.0 is directly connected, Vlan3
C 172.16.83.0 is directly connected, Vlan4
S* 0.0.0.0/0 [1/0] via 172.16.80.1

Have I missed something out of the switch setup or the filer setup that is stopping the switch seeing the filer on vlan 1?

Any help will be appreciated

Re: FAS2020 and multiple VLANS on VIF - one VLAN not responding

axsys — Mon, 23 Feb 2015 13:27:08 GMT

can you please add the output of route -s on the filer? are you able to ping the default gateway (according to your info should most likely be 172.16.80.1?)

as well ifconfig -a or just for the interfaces, as you wish.

cheers

Re: FAS2020 and multiple VLANS on VIF - one VLAN not responding

shatfield — Wed, 04 Mar 2015 06:31:40 GMT

You've told the netapp to expect VLAN 1 to come in tagged. You'll need to tell the Switch to send it tagged by setting some other VLAN (even a dummy vlan) as the native vlan on the port channel.

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FAS2020 and multiple VLANS on VIF - one VLAN not responding

Re: FAS2020 and multiple VLANS on VIF - one VLAN not responding

Re: FAS2020 and multiple VLANS on VIF - one VLAN not responding