Create an SNMP community and assigning it to a LIF
You can create an SNMP community that acts as an authentication mechanism between the management station and the storage virtual machine (SVM) when using SNMPv1 and SNMPv2c.
By creating SNMP communities in a data SVM, you can execute commands such as
snmpget on the data LIFs.
In new installations of ONTAP, SNMPv1 and SNMPv2c are disabled by default.
SNMPv1 and SNMPv2c are enabled after you create an SNMP community.
ONTAP supports read-only communities.
By default, the "data" firewall policy that is assigned to data LIFs has SNMP service set to
You must create a new firewall policy with SNMP service set to
allowwhen creating an SNMP user for a data SVM.
You can create SNMP communities for SNMPv1 and SNMPv2c users for both the admin SVM and the data SVM.
Because an SVM is not part of the SNMP standard, queries on data LIFs must include the NetApp root OID (126.96.36.199.4.1.789)—for example,
snmpwalk -v 2c -c snmpNFS 10.238.19.14 188.8.131.52.4.1.789.
Create an SNMP community by using the
system snmp community addcommand. The following command shows how to create an SNMP community in the admin SVM cluster-1:
system snmp community add -type ro -community-name comty1 -vserver cluster-1
The following command shows how to create an SNMP community in the data SVM vs1:
system snmp community add -type ro -community-name comty2 -vserver vs1
Verify that the communities have been created by using the system snmp community show command.
The following command shows the two communities created for SNMPv1 and SNMPv2c:
system snmp community show cluster-1 rocomty1 vs1 rocomty2
Check whether SNMP is allowed as a service in the "data" firewall policy by using the
system services firewall policy
The following command shows that the snmp service is not allowed in the default "data" firewall policy (the snmp service is allowed in the "mgmt" firewall policy only):
system services firewall policy show Vserver Policy Service Allowed ------- ------------ ---------- ------------------- cluster-1 data dns 0.0.0.0/0 ndmp 0.0.0.0/0 ndmps 0.0.0.0/0 cluster-1 intercluster https 0.0.0.0/0 ndmp 0.0.0.0/0 ndmps 0.0.0.0/0 cluster-1 mgmt dns 0.0.0.0/0 http 0.0.0.0/0 https 0.0.0.0/0 ndmp 0.0.0.0/0 ndmps 0.0.0.0/0 ntp 0.0.0.0/0 snmp 0.0.0.0/0 ssh 0.0.0.0/0
Create a new firewall policy that allows access using the
snmpservice by using the
system services firewall policy createcommand.
The following commands create a new data firewall policy named "data1" that allows the
system services firewall policy create -policy data1 -service snmp -vserver vs1 -allow-list 0.0.0.0/0 cluster-1::> system services firewall policy show -service snmp Vserver Policy Service Allowed ------- ------------ ---------- ------------------- cluster-1 mgmt snmp 0.0.0.0/0 vs1 data1 snmp 0.0.0.0/0
Apply the firewall policy to a data LIF by using the `network interface modify `command with the -firewall-policy parameter.
The following command assigns the new "data1" firewall policy to LIF "datalif1":
network interface modify -vserver vs1 -lif datalif1 -firewall-policy data1