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CLUS LIFs Sharing same port

I just got to a new customer and this is something I found early on...  in short, clus1, clus3 and clus4 all show as being homed on e0a for the same node.  I see this for other systems where clus1 and clus2 may be the only cluster ports (FAS62xx) and both show homed on e0c, for example.

 

Vserver NameClusterClusterClusterCluster
Logical Interface Namenode1_clus1node1_clus2node1_clus3node1_clus4
Roleclusterclusterclustercluster
Data Protocolnonenonenonenone
Home Nodenode1node1node1node1
Home Porte0ae0be0ae0a
Current Nodenode1node1node1node1
Current Porte0ae0be0ae0a
Operational Statusupupupup
Numeric ID1024102310351034
Is HomeTRUETRUETRUETRUE
Network Address169.254.2.171169.254.2.172169.254.2.173169.254.2.174
Netmask255.255.0.0255.255.0.0255.255.0.0255.255.0.0
Administrative Statusupupupup

 

 

Any ideas as to why this might be?

 

Re: CLUS LIFs Sharing same port

More info... from ASUP for node1, ifconfig -a section:

 

e0a: flags=0x1f0c867<UP,BROADCAST,RUNNING,MULTICAST,TCPCKSUM,LRO,CLUSTER_PORT> mtu 9000
	inet 169.254.2.171 netmask 0xffff0000 broadcast 169.254.255.255 noddns CLUSTER	Vserver ID: -3
	inet 169.254.2.173 netmask 0xffff0000 broadcast 169.254.255.255 noddns CLUSTER	Vserver ID: -3
	inet 169.254.2.174 netmask 0xffff0000 broadcast 169.254.255.255 noddns CLUSTER	Vserver ID: -3
	ether 00:a0:98:67:6a:65 (auto-10g_sr-fd-up) flowcontrol none
e0b: flags=0x1f0c867<UP,BROADCAST,RUNNING,MULTICAST,TCPCKSUM,LRO,CLUSTER_PORT> mtu 9000
	inet 169.254.2.172 netmask 0xffff0000 broadcast 169.254.255.255 noddns CLUSTER	Vserver ID: -3
	ether 00:a0:98:67:6a:66 (auto-10g_sr-fd-up) flowcontrol none

 

Re: CLUS LIFs Sharing same port

I'm curious as to how the FAS62xx ended up with four cluster LIFs in the first place. Best practices only require 2 cluster ports and LIFs.

 

Regardless, if you really only have 2 cluster ports e0a and e0b, just delete the 2 extra LIFs. Make sure you end up with a cluster LIF home-ported on each port.

 

See: https://kb.netapp.com/support/s/article/ka31A0000004YpD/How-to-delete-a-Cluster-LIF