2017-04-20 01:53 AM - edited 2017-04-20 04:32 AM
I have a FAS8040 with cDOT 8.3 called FAS14
I have setup failoverr of LIFs in the following way:
1. created a LIF for CIFS using e3b of node1 of FAS14
2. set up failover policy as user-defined on that LIF
3. created a failover-group FOG-CIFS for the SVM CIFS with e3b of node1 and e3b of node2 in it
Currently, the user-fail-overgoup of the LIFs is seen as unused. Do i have to change it to "enbaled" ? If so, how can i that ?
Do i have to do something more for failover ?
I did the same for a SVM for NFS.
Question: When e3B of node1 goes down, does e3b of node2 takes over automatically using this setup ?
Or do i need interface groups for failover and a separate Ipspace and broadcast group ?
2017-04-20 06:36 AM
There's a lot that goes into failover LIFs, failover groups, etc. I'd recommend jumping to page 69 of the following:
That will explain the concepts in a lot more detail than can be easily done here and it'll make sure you don't lose data connectivity in a failover and/or other failure.
Hope that helps!
2017-04-20 07:57 AM
I looked into this document for V 8.3 :2 remarks:
1. it does not speak anymùr about use-failover-group. ?????
2. As long as the default failover group exists holding all the ports, the failover goes wrong if it takes this a wrong port. I cannot remove ports from this failover group..... and i cannot delete the Default failover group.
3. Does this mean that user-defined failover-groups have alwqys prefenrence over the default failover group ?
2 weeks ago
IF you are on Ontap 8.3 or 9 there is little to no reason to manage your network-failover group manually.
You should be managing the broadcast-domain by grouping the ports in to broadcast-domain (same vlan, type & speed)
rest will be managed by ontap, if you use the appropriate settings "failover-policy and failover-group" for the LIF while creating it.
You can use the following command to get the LIF's settings.
::> net int show -fields auto-revert,firewall-policy,failover-group,status-admin,dns-zone,role,data-protocol,home-node,home-port,auto,listen-for-dns-query,ipspace,failover-policy,netmask-length,address
The following list describes how the -failover-policy setting affects the target ports that are selected from the failover group:
broadcast-domain-wide : All ports on all nodes in the failover group.
system-defined : Only those ports on the LIF's home node and a non-SFO partner.
local-only : Only those ports on the LIF's home node.
sfo-partner-only : Only those ports on the LIF's home node and its SFO partner.
disabled : The LIF is not configured for failover.
Types of failover policies Click here
Configuring failover settings on a LIF Click here
I have attached a sample output from a recently configured (ontap 9.1) cluster.
If you select the fixed-width font in a text editor the output file should be formatted.
hope this help.