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Cluster and storage switches
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Opcional: Configure o SNMPv3 para o seu switch

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O SNMP é usado para monitorar os switches. O CSHM (Ethernet Switch Health Monitor) utiliza SNMP para monitorar a integridade e o desempenho dos switches de cluster e armazenamento. Por predefinição, o SNMPv2c é configurado automaticamente através do ficheiro de configuração de referência (RCF).

O SNMPv3 é mais seguro do que o SNMPv2 porque introduz recursos de segurança robustos, como autenticação, criptografia e integridade de mensagens, que protegem contra acesso não autorizado e garantem a confidencialidade e integridade dos dados durante a transmissão.

Observação O SNMPv3 só é suportado no ONTAP 9.12,1 e posterior.

Siga este procedimento para configurar o SNMPv3 para seu switch específico, que suporta CSHM.

Sobre esta tarefa

Os comandos a seguir são usados para configurar um nome de usuário SNMPv3 nos switches Broadcom, Cisco e NVIDIA:

Switches Broadcom

Configure um OPERADOR DE REDE de nome de usuário SNMPv3 em switches Broadcom BES-53248.

  • Para sem autenticação:

    snmp-server user SNMPv3UserNoAuth NETWORK-OPERATOR noauth

  • Para MD5/SHA autenticação:

    snmp-server user SNMPv3UserAuth NETWORK-OPERATOR [auth-md5|auth-sha]

  • Para autenticação MD5/SHA com criptografia AES/DES:

    snmp-server user SNMPv3UserAuthEncrypt NETWORK-OPERATOR [auth-md5|auth-sha] [priv-aes128|priv-des]

O seguinte comando configura um nome de usuário SNMPv3 no lado ONTAP:

security login create -user-or-group-name SNMPv3_USER -application snmp -authentication-method usm -remote-switch-ipaddress ADDRESS

O seguinte comando estabelece o nome de usuário SNMPv3 com CSHM:

cluster1::*> system switch ethernet modify -device DEVICE -snmp-version SNMPv3 -community-or-username SNMPv3_USER
Passos

  1. Configure o usuário SNMPv3 no switch para usar autenticação e criptografia:

    show snmp status
    (sw1)(Config)# snmp-server user <username> network-admin auth-md5 <password> priv-aes128 <password>

(cs1)(Config)# show snmp user snmp

     Name            Group Name      Auth Priv
                                     Meth Meth    Remote Engine ID
----------------- ------------------ ---- ------ -------------------------
<username>        network-admin      MD5  AES128 8000113d03d8c497710bee

  2. Configure o usuário SNMPv3 no lado ONTAP:

    security login create -user-or-group-name <username> -application snmp -authentication-method usm -remote-switch-ipaddress 10.231.80.212
    cluster1::*> security login create -user-or-group-name <username> -application snmp -authentication-method usm -remote-switch-ipaddress 10.231.80.212

Enter the authoritative entity's EngineID [remote EngineID]:

Which authentication protocol do you want to choose (none, md5, sha, sha2-256)
[none]: md5

Enter the authentication protocol password (minimum 8 characters long):

Enter the authentication protocol password again:

Which privacy protocol do you want to choose (none, des, aes128) [none]: aes128

Enter privacy protocol password (minimum 8 characters long):
Enter privacy protocol password again:

  3. Configure o CSHM para monitorar com o novo usuário SNMPv3:

    system switch ethernet show-all -device "sw1" -instance
    cluster1::*> system switch ethernet show-all -device "sw1 (b8:59:9f:09:7c:22)" -instance

                                   Device Name: sw1
                                    IP Address: 10.228.136.24
                                  SNMP Version: SNMPv2c
                                 Is Discovered: true
DEPRECATED-Community String or SNMPv3 Username: -
           Community String or SNMPv3 Username: cshm1!
                                  Model Number: BES-53248
                                Switch Network: cluster-network
                              Software Version: 3.9.0.2
                     Reason For Not Monitoring: None  <---- should display this if SNMP settings are valid
                      Source Of Switch Version: CDP/ISDP
                                Is Monitored ?: true
                   Serial Number of the Device: QTFCU3826001C
                                   RCF Version: v1.8X2 for Cluster/HA/RDMA

cluster1::*>
cluster1::*> system switch ethernet modify -device "sw1" -snmp-version SNMPv3 -community-or-username <username>

  4. Verifique se o número de série a ser consultado com o usuário SNMPv3 recém-criado é o mesmo que detalhado na etapa anterior após o período de polling CSHM ter sido concluído.

    system switch ethernet polling-interval show
    cluster1::*> system switch ethernet polling-interval show
         Polling Interval (in minutes): 5

cluster1::*> system switch ethernet show-all -device "sw1" -instance
                                   Device Name: sw1
                                    IP Address: 10.228.136.24
                                  SNMP Version: SNMPv3
                                 Is Discovered: true
DEPRECATED-Community String or SNMPv3 Username: -
           Community String or SNMPv3 Username: <username>
                                  Model Number: BES-53248
                                Switch Network: cluster-network
                              Software Version: 3.9.0.2
                     Reason For Not Monitoring: None  <---- should display this if SNMP settings are valid
                      Source Of Switch Version: CDP/ISDP
                                Is Monitored ?: true
                   Serial Number of the Device: QTFCU3826001C
                                   RCF Version: v1.8X2 for Cluster/HA/RDMA
Switches Cisco

Configure um nome de usuário SNMPv3 SNMPv3_USER em switches Cisco 9336C-FX2:

  • Para sem autenticação:

    snmp-server user SNMPv3_USER NoAuth

  • Para MD5/SHA autenticação:

    snmp-server user SNMPv3_USER auth [md5|sha] AUTH-PASSWORD

  • Para autenticação MD5/SHA com criptografia AES/DES:

    snmp-server user SNMPv3_USER AuthEncrypt  auth [md5|sha] AUTH-PASSWORD priv aes-128 PRIV-PASSWORD

O seguinte comando configura um nome de usuário SNMPv3 no lado ONTAP:

security login create -user-or-group-name SNMPv3_USER -application snmp -authentication-method usm -remote-switch-ipaddress ADDRESS

O seguinte comando estabelece o nome de usuário SNMPv3 com CSHM:

system switch ethernet modify -device DEVICE -snmp-version SNMPv3 -community-or-username SNMPv3_USER
Passos

  1. Configure o usuário SNMPv3 no switch para usar autenticação e criptografia:

    show snmp user
    (sw1)(Config)# snmp-server user SNMPv3User auth md5 <auth_password> priv aes-128 <priv_password>

(sw1)(Config)# show snmp user

-----------------------------------------------------------------------------
                              SNMP USERS
-----------------------------------------------------------------------------

User              Auth            Priv(enforce)   Groups          acl_filter
----------------- --------------- --------------- --------------- -----------
admin             md5             des(no)         network-admin
SNMPv3User        md5             aes-128(no)     network-operator

-----------------------------------------------------------------------------
     NOTIFICATION TARGET USERS (configured  for sending V3 Inform)
-----------------------------------------------------------------------------

User              Auth               Priv
----------------- ------------------ ------------

(sw1)(Config)#

  2. Configure o usuário SNMPv3 no lado ONTAP:

    security login create -user-or-group-name <username> -application snmp -authentication-method usm -remote-switch-ipaddress 10.231.80.212
    cluster1::*> system switch ethernet modify -device "sw1 (b8:59:9f:09:7c:22)" -is-monitoring-enabled-admin true

cluster1::*> security login create -user-or-group-name <username> -application snmp -authentication-method usm -remote-switch-ipaddress 10.231.80.212

Enter the authoritative entity's EngineID [remote EngineID]:

Which authentication protocol do you want to choose (none, md5, sha, sha2-256)
[none]: md5

Enter the authentication protocol password (minimum 8 characters long):

Enter the authentication protocol password again:

Which privacy protocol do you want to choose (none, des, aes128) [none]: aes128

Enter privacy protocol password (minimum 8 characters long):
Enter privacy protocol password again:

  3. Configure o CSHM para monitorar com o novo usuário SNMPv3:

    system switch ethernet show-all -device "sw1" -instance
    cluster1::*> system switch ethernet show-all -device "sw1" -instance

                                   Device Name: sw1
                                    IP Address: 10.231.80.212
                                  SNMP Version: SNMPv2c
                                 Is Discovered: true
   SNMPv2c Community String or SNMPv3 Username: cshm1!
                                  Model Number: N9K-C9336C-FX2
                                Switch Network: cluster-network
                              Software Version: Cisco Nexus Operating System (NX-OS) Software, Version 9.3(7)
                     Reason For Not Monitoring: None  <---- displays when SNMP settings are valid
                      Source Of Switch Version: CDP/ISDP
                                Is Monitored ?: true
                   Serial Number of the Device: QTFCU3826001C
                                   RCF Version: v1.8X2 for Cluster/HA/RDMA

cluster1::*>
cluster1::*> system switch ethernet modify -device "sw1" -snmp-version SNMPv3 -community-or-username <username>
cluster1::*>

  4. Verifique se o número de série a ser consultado com o usuário SNMPv3 recém-criado é o mesmo que detalhado na etapa anterior após o período de polling CSHM ter sido concluído.

    system switch ethernet polling-interval show
    cluster1::*> system switch ethernet polling-interval show
         Polling Interval (in minutes): 5

cluster1::*> system switch ethernet show-all -device "sw1" -instance

                                   Device Name: sw1
                                    IP Address: 10.231.80.212
                                  SNMP Version: SNMPv3
                                 Is Discovered: true
   SNMPv2c Community String or SNMPv3 Username: SNMPv3User
                                  Model Number: N9K-C9336C-FX2
                                Switch Network: cluster-network
                              Software Version: Cisco Nexus Operating System (NX-OS) Software, Version 9.3(7)
                     Reason For Not Monitoring: None  <---- displays when SNMP settings are valid
                      Source Of Switch Version: CDP/ISDP
                                Is Monitored ?: true
                   Serial Number of the Device: QTFCU3826001C
                                   RCF Version: v1.8X2 for Cluster/HA/RDMA

cluster1::*>
NVIDIA - CLI 5,4

Configure um nome de usuário SNMPv3 SNMPv3_USER em switches NVIDIA SN2100 executando CLI 5,4:

  • Para sem autenticação:

    net add snmp-server username SNMPv3_USER auth-none

  • Para MD5/SHA autenticação:

    net add snmp-server username SNMPv3_USER [auth-md5|auth-sha] AUTH-PASSWORD

  • Para autenticação MD5/SHA com criptografia AES/DES:

    net add snmp-server username SNMPv3_USER [auth-md5|auth-sha] AUTH-PASSWORD [encrypt-aes|encrypt-des] PRIV-PASSWORD

O seguinte comando configura um nome de usuário SNMPv3 no lado ONTAP:

security login create -user-or-group-name SNMPv3_USER -application snmp -authentication-method usm -remote-switch-ipaddress ADDRESS

O seguinte comando estabelece o nome de usuário SNMPv3 com CSHM:

system switch ethernet modify -device DEVICE -snmp-version SNMPv3 -community-or-username SNMPv3_USER
Passos

  1. Configure o usuário SNMPv3 no switch para usar autenticação e criptografia:

    net show snmp status
    cumulus@sw1:~$ net show snmp status
Simple Network Management Protocol (SNMP) Daemon.
---------------------------------  ----------------
Current Status                     active (running)
Reload Status                      enabled
Listening IP Addresses             all vrf mgmt
Main snmpd PID                     4318
Version 1 and 2c Community String  Configured
Version 3 Usernames                Not Configured
---------------------------------  ----------------
cumulus@sw1:~$
cumulus@sw1:~$ net add snmp-server username SNMPv3User auth-md5 <password> encrypt-aes <password>
cumulus@sw1:~$ net commit
--- /etc/snmp/snmpd.conf        2020-08-02 21:09:34.686949282 +0000
+++ /run/nclu/snmp/snmpd.conf   2020-08-11 00:13:51.826126655 +0000
@@ -1,26 +1,28 @@
 # Auto-generated config file: do not edit. #
 agentaddress udp:@mgmt:161
 agentxperms 777 777 snmp snmp
 agentxsocket /var/agentx/master
 createuser _snmptrapusernameX
+createuser SNMPv3User MD5 <password> AES <password>
 ifmib_max_num_ifaces 500
 iquerysecname _snmptrapusernameX
 master agentx
 monitor -r 60 -o laNames -o laErrMessage "laTable" laErrorFlag != 0
 pass -p 10 1.3.6.1.2.1.1.1 /usr/share/snmp/sysDescr_pass.py
 pass_persist 1.2.840.10006.300.43 /usr/share/snmp/ieee8023_lag_pp.py
 pass_persist 1.3.6.1.2.1.17 /usr/share/snmp/bridge_pp.py
 pass_persist 1.3.6.1.2.1.31.1.1.1.18 /usr/share/snmp/snmpifAlias_pp.py
 pass_persist 1.3.6.1.2.1.47 /usr/share/snmp/entity_pp.py
 pass_persist 1.3.6.1.2.1.99 /usr/share/snmp/entity_sensor_pp.py
 pass_persist 1.3.6.1.4.1.40310.1 /usr/share/snmp/resq_pp.py
 pass_persist 1.3.6.1.4.1.40310.2 /usr/share/snmp/cl_drop_cntrs_pp.py
 pass_persist 1.3.6.1.4.1.40310.3 /usr/share/snmp/cl_poe_pp.py
 pass_persist 1.3.6.1.4.1.40310.4 /usr/share/snmp/bgpun_pp.py
 pass_persist 1.3.6.1.4.1.40310.5 /usr/share/snmp/cumulus-status.py
 pass_persist 1.3.6.1.4.1.40310.6 /usr/share/snmp/cumulus-sensor.py
 pass_persist 1.3.6.1.4.1.40310.7 /usr/share/snmp/vrf_bgpun_pp.py
+rocommunity cshm1! default
 rouser _snmptrapusernameX
+rouser SNMPv3User priv
 sysobjectid 1.3.6.1.4.1.40310
 sysservices 72
-rocommunity cshm1! default


net add/del commands since the last "net commit"

User        Timestamp                   Command
----------  --------------------------  -------------------------------------------------------------------------
SNMPv3User  2020-08-11 00:13:51.826987  net add snmp-server username SNMPv3User auth-md5 <password> encrypt-aes <password>

cumulus@sw1:~$
cumulus@sw1:~$ net show snmp status
Simple Network Management Protocol (SNMP) Daemon.
---------------------------------  ----------------
Current Status                     active (running)
Reload Status                      enabled
Listening IP Addresses             all vrf mgmt
Main snmpd PID                     24253
Version 1 and 2c Community String  Configured
Version 3 Usernames                Configured     <---- Configured here
---------------------------------  ----------------
cumulus@sw1:~$

  2. Configure o usuário SNMPv3 no lado ONTAP:

    security login create -user-or-group-name SNMPv3User -application snmp -authentication-method usm -remote-switch-ipaddress 10.231.80.212
    cluster1::*> security login create -user-or-group-name SNMPv3User -application snmp -authentication-method usm -remote-switch-ipaddress 10.231.80.212

Enter the authoritative entity's EngineID [remote EngineID]:

Which authentication protocol do you want to choose (none, md5, sha, sha2-256)
[none]: md5

Enter the authentication protocol password (minimum 8 characters long):

Enter the authentication protocol password again:

Which privacy protocol do you want to choose (none, des, aes128) [none]: aes128

Enter privacy protocol password (minimum 8 characters long):
Enter privacy protocol password again:

  3. Configure o CSHM para monitorar com o novo usuário SNMPv3:

    system switch ethernet show-all -device "sw1 (b8:59:9f:09:7c:22)" -instance
    cluster1::*> system switch ethernet show-all -device "sw1 (b8:59:9f:09:7c:22)" -instance
                                   Device Name: sw1 (b8:59:9f:09:7c:22)
                                    IP Address: 10.231.80.212
                                  SNMP Version: SNMPv2c
                                 Is Discovered: true
DEPRECATED-Community String or SNMPv3 Username: -
           Community String or SNMPv3 Username: cshm1!
                                  Model Number: MSN2100-CB2FC
                                Switch Network: cluster-network
                              Software Version: Cumulus Linux version 4.4.3 running on Mellanox Technologies Ltd. MSN2100
                     Reason For Not Monitoring: None
                      Source Of Switch Version: LLDP
                                Is Monitored ?: true
                   Serial Number of the Device: MT2110X06399  <---- serial number to check
                                   RCF Version: MSN2100-RCF-v1.9X6-Cluster-LLDP Aug-18-2022

cluster1::*>
cluster1::*> system switch ethernet modify -device "sw1 (b8:59:9f:09:7c:22)" -snmp-version SNMPv3 -community-or-username SNMPv3User

  4. Verifique se o número de série a ser consultado com o usuário SNMPv3 recém-criado é o mesmo que detalhado na etapa anterior após o período de polling CSHM ter sido concluído.

    system switch ethernet polling-interval show
    cluster1::*> system switch ethernet polling-interval show
         Polling Interval (in minutes): 5

cluster1::*> system switch ethernet show-all -device "sw1 (b8:59:9f:09:7c:22)" -instance
                                   Device Name: sw1 (b8:59:9f:09:7c:22)
                                    IP Address: 10.231.80.212
                                  SNMP Version: SNMPv3
                                 Is Discovered: true
DEPRECATED-Community String or SNMPv3 Username: -
           Community String or SNMPv3 Username: SNMPv3User
                                  Model Number: MSN2100-CB2FC
                                Switch Network: cluster-network
                              Software Version: Cumulus Linux version 4.4.3 running on Mellanox Technologies Ltd. MSN2100
                     Reason For Not Monitoring: None
                      Source Of Switch Version: LLDP
                                Is Monitored ?: true
                   Serial Number of the Device: MT2110X06399  <---- serial number to check
                                   RCF Version: MSN2100-RCF-v1.9X6-Cluster-LLDP Aug-18-2022