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Configuring SNMP

Simple Network Management Protocol (SNMP) is an Internet Standard protocol for collecting and organizing information about managed devices on IP networks and for modifying that information to change device behaviour.

SNMP is widely used in network management for network monitoring. SNMP exposes management data in the form of variables on the managed systems organized in a Management Information Base (MIB) which describes the system status and configuration. These variables can then be remotely queried (and, in some circumstances, manipulated) by managing applications.

Configure SNMP community Configuring SNMP Trap Configuring SNMP Threshold Configuring SNMP User Configuring SNMP Location Configuring SNMP Contact

Configure SNMP community

You can configure the SNMP Community string using the below command:

Reference

Command

[no] snmp-server community <string>

Description

Example

You can verify the configuration by using the command(s) below:

Configuring SNMP Trap

Configure SNMP Trap

Traps are used when the Device needs to alert the Network Management software of an event without being polled. Traps ensure that the NMS gets information if a certain event occurs on the device that needs to be recorded without being polled by the NMS first. Managed network devices will have Trap MIBs with predefined conditions built into them. It’s crucial that the Network management system has these MIBs compiled into them to receive any traps sent by the given device/s. The primary focus of this feature is to support SNMP Trap notifications and in particular, linkUp, linkDown and config change trap notifications.

Supported MIBs

MIBS added to support SNMP Trap
DISMAN-EVENT-MIB.txt
INET-ADDRESS-MIB.txt

With these MIBs, you can trigger sending an SNMP trap to a configured SNMP-server host based on certain events. Also, GET/GETNext/WALK operations can be supported on these mibs. The linkUp and linkDown traps are sent to the configured host in the event that an interface Admin or Oper status changes from up to down or vice-versa. The configChange trap monitors NPB (MAP, rule, port-npb config) and port (Speed, MTU, FEC, Autoneg) configuration changes. A configChangeTrap PDU is sent to the host when any value in these tables are modified, added or removed.

It's recommended not to set up more than 4 SNMP-Trap servers.

Reference

Example

You can verify the configuration by using the command(s) below:

Traps are only supported on SNMPv2c

Disable PSU/FAN traps:

Below commands can be used to disable FAN/PSU traps temporarily,

Reference

By default, traps are generated every 60 seconds, which may cause unnecessary stress on memory and CPU. To mitigate this, disabling the default behaviour using the above command is recommended for disabling PSU and FAN traps.

This will result in traps being generated only when the PSU/FAN state changes, reducing the load on memory and CPU.

SNMP Trap Logs:

Configuring SNMP Threshold

You can configure the SNMP Threshold using the below command:

Reference

Command

[no] snmp-server trap <cpu-util/mem-util> threshold <%>

Description

Example

You can verify the configuration by using the command(s) below:

Configuring SNMP User

You can configure the SNMP User string using the below command:

Reference

Command

[no] snmp-server user <user_name> priv_type [AuthNoPriv/Priv/noAuthNoPriv] access [RO/RW] auth [HMAC-SHA-2/MD5/SHA] auth-password <auth_password>

Description

SNMP user configuration

Example

You can verify the configuration by using the command(s) below:

Configuring SNMP Location

You can configure the SNMP Location string using the below command:

Reference

Command

[no] snmp-server location <location_name>

Description

Example

You can verify the configuration by using the command(s) below:

Configuring SNMP Contact

You can configure the SNMP Contact string using the below command:

Reference

Command

[no] snmp-server contact contact-name <contact_name> contact-mail <Contact_mail>

Description

Example

You can verify the configuration by using the command(s) below:

Configuring SNMP Trap

Configure SNMP Trap

Supported MIBs

MIBS added to support SNMP Trap
DISMAN-EVENT-MIB.txt
INET-ADDRESS-MIB.txt

It's recommended not to set up more than 4 SNMP-Trap servers.

Reference

Example

You can verify the configuration by using the command(s) below:

Traps are only supported on SNMPv2c

Disable PSU/FAN traps:

Below commands can be used to disable FAN/PSU traps temporarily,

Reference

This will result in traps being generated only when the PSU/FAN state changes, reducing the load on memory and CPU.

SNMP Trap Logs:

// As received on the SNMP server


//Disk Traps
10.4.5.244.47699 > npbsrv01.snmp: [udp sum ok]  { SNMPv2c C="Aviz" { V2Trap(55) R=755944523  system.sysUpTime.0=5574 S:1.1.4.1.0=88.2.0.3="Current Disk usage 78% falls below threshold 79%" } }
10.4.5.244.47549 > npbsrv01.snmp: [udp sum ok]  { SNMPv2c C="Aviz" { V2Trap(55) R=755944523  system.sysUpTime.0=5574 S:1.1.4.1.0=88.2.0.2="Current Disk usage 88% raised above threshold 80%" } }
10.4.5.244.47239 > npbsrv01.snmp: [udp sum ok]  { SNMPv2c C="Aviz" { V2Trap(55) R=755944523  system.sysUpTime.0=5574 S:1.1.4.1.0=88.2.0.4="Disk /dev/sda3 failed" } }

//CPU Traps
10.4.5.244.49899 > npbsrv01.snmp: [udp sum ok]  { SNMPv2c C="Aviz" { V2Trap(55) R=755944523  system.sysUpTime.0=5574 S:1.1.4.1.0=88.2.0.3="Current CPU usage 70% falling below threshold 80%" } }
10.4.5.244.35699 > npbsrv01.snmp: [udp sum ok]  { SNMPv2c C="Aviz" { V2Trap(55) R=755944523  system.sysUpTime.0=5574 S:1.1.4.1.0=88.2.0.2="Current CPU usage 88% raised above threshold 80%" } }

//Memory Traps
10.4.5.244.47689 > npbsrv01.snmp: [udp sum ok]  { SNMPv2c C="Aviz" { V2Trap(55) R=755944523  system.sysUpTime.0=5574 S:1.1.4.1.0=88.2.0.3="Current mem usage 71% falling below threshold 80%" } }
10.4.5.244.47656 > npbsrv01.snmp: [udp sum ok]  { SNMPv2c C="Aviz" { V2Trap(55) R=755944523  system.sysUpTime.0=5574 S:1.1.4.1.0=88.2.0.2="Current mem usage 88% raised above threshold 80%" } }

//PSU Traps
10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(101)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.1 E:58564.2.1.1.1="PSU 2 present, status OK"

//FAN Traps
10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(100)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.2 E:58564.2.1.1.2="fan1 present, status OK"
10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(100)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.2 E:58564.2.1.1.2="fan2 present, status OK"
10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(100)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.2 E:58564.2.1.1.2="fan3 present, status OK"
10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(100)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.2 E:58564.2.1.1.2="fan4 present, status OK"
10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(100)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.2 E:58564.2.1.1.2="fan5 present, status OK"
10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(100)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.2 E:58564.2.1.1.2="fan6 present, status OK"
10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(100)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.2 E:58564.2.1.1.2="fan7 present, status OK"
10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(100)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.2 E:58564.2.1.1.2="fan8 present, status OK"

10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(105)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.2 E:58564.2.1.1.2="psu2_fan1 present, status OK"

// As received on the SNMP server


//Disk Traps
10.4.5.244.47699 > npbsrv01.snmp: [udp sum ok]  { SNMPv2c C="Aviz" { V2Trap(55) R=755944523  system.sysUpTime.0=5574 S:1.1.4.1.0=88.2.0.3="Current Disk usage 78% falls below threshold 79%" } }
10.4.5.244.47549 > npbsrv01.snmp: [udp sum ok]  { SNMPv2c C="Aviz" { V2Trap(55) R=755944523  system.sysUpTime.0=5574 S:1.1.4.1.0=88.2.0.2="Current Disk usage 88% raised above threshold 80%" } }
10.4.5.244.47239 > npbsrv01.snmp: [udp sum ok]  { SNMPv2c C="Aviz" { V2Trap(55) R=755944523  system.sysUpTime.0=5574 S:1.1.4.1.0=88.2.0.4="Disk /dev/sda3 failed" } }

//CPU Traps
10.4.5.244.49899 > npbsrv01.snmp: [udp sum ok]  { SNMPv2c C="Aviz" { V2Trap(55) R=755944523  system.sysUpTime.0=5574 S:1.1.4.1.0=88.2.0.3="Current CPU usage 70% falling below threshold 80%" } }
10.4.5.244.35699 > npbsrv01.snmp: [udp sum ok]  { SNMPv2c C="Aviz" { V2Trap(55) R=755944523  system.sysUpTime.0=5574 S:1.1.4.1.0=88.2.0.2="Current CPU usage 88% raised above threshold 80%" } }

//Memory Traps
10.4.5.244.47689 > npbsrv01.snmp: [udp sum ok]  { SNMPv2c C="Aviz" { V2Trap(55) R=755944523  system.sysUpTime.0=5574 S:1.1.4.1.0=88.2.0.3="Current mem usage 71% falling below threshold 80%" } }
10.4.5.244.47656 > npbsrv01.snmp: [udp sum ok]  { SNMPv2c C="Aviz" { V2Trap(55) R=755944523  system.sysUpTime.0=5574 S:1.1.4.1.0=88.2.0.2="Current mem usage 88% raised above threshold 80%" } }

//PSU Traps
10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(101)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.1 E:58564.2.1.1.1="PSU 2 present, status OK"

//FAN Traps
10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(100)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.2 E:58564.2.1.1.2="fan1 present, status OK"
10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(100)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.2 E:58564.2.1.1.2="fan2 present, status OK"
10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(100)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.2 E:58564.2.1.1.2="fan3 present, status OK"
10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(100)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.2 E:58564.2.1.1.2="fan4 present, status OK"
10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(100)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.2 E:58564.2.1.1.2="fan5 present, status OK"
10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(100)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.2 E:58564.2.1.1.2="fan6 present, status OK"
10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(100)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.2 E:58564.2.1.1.2="fan7 present, status OK"
10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(100)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.2 E:58564.2.1.1.2="fan8 present, status OK"

10.4.4.52.32850 > npbsrv01.snmp:  V2Trap(105)  system.sysUpTime.0=42198 S:1.1.4.1.0=E:58564.2.1.1.2 E:58564.2.1.1.2="psu2_fan1 present, status OK"

pbnoscli# configure terminal 
pbnoscli(config)# snmp-server 
 community              contact                location               trap               user                  
pbnoscli(config)# snmp-server 
  community             Community string authentication
  contact               Configure SNMP contact
  location              Configure SNMP location
  trap                  Trap configuration
  user                  SNMP user
pbnoscli(config)# snmp-server user 
  <user_name>           Enter Username
pbnoscli(config)# snmp-server user aviz 
  priv_type             User Privilage
pbnoscli(config)# snmp-server user aviz priv_type 
  AuthNoPriv            User Authentication and No Encryption
  Priv                  User Authentication and Encryption
  noAuthNoPriv          No user authentication and No Encryption
pbnoscli(config)# snmp-server user aviz priv_type au
pbnoscli(config)# snmp-server user aviz priv_type AuthNoPriv 
  access                User access permission
pbnoscli(config)# snmp-server user aviz priv_type AuthNoPriv access 
  RO                    Read only
  RW                    Read & Write
pbnoscli(config)# snmp-server user aviz priv_type AuthNoPriv access RO 
  auth                  Authentication
pbnoscli(config)# snmp-server user aviz priv_type AuthNoPriv access RO auth 
  HMAC-SHA-2            
  MD5                   
  SHA                   
pbnoscli(config)# snmp-server user aviz priv_type AuthNoPriv access RO auth md
pbnoscli(config)# snmp-server user aviz priv_type AuthNoPriv access RO auth MD5 
  auth-password         
pbnoscli(config)# snmp-server user aviz priv_type AuthNoPriv access RO auth MD5 auth-password 
  <auth_password>       Auth Password length 8 to 64       
pbnoscli(config)# snmp-server user aviz priv_type AuthNoPriv access RO auth MD5 auth-password password 
  <cr>
pbnoscli(config)# snmp-server user aviz priv_type AuthNoPriv access RO auth MD5 auth-password password 
pbnoscli(config)# 


pbnoscli(config)# no snmp-server user aviz
pbnoscli(config)#

pbnoscli# configure terminal 
pbnoscli(config)# snmp-server 
 community              contact                location               trap               user                  
pbnoscli(config)# snmp-server 
  community             Community string authentication
  contact               Configure SNMP contact
  location              Configure SNMP location
  trap                  Trap configuration
  user                  SNMP user
pbnoscli(config)# snmp-server user 
  <user_name>           Enter Username
pbnoscli(config)# snmp-server user aviz 
  priv_type             User Privilage
pbnoscli(config)# snmp-server user aviz priv_type 
  AuthNoPriv            User Authentication and No Encryption
  Priv                  User Authentication and Encryption
  noAuthNoPriv          No user authentication and No Encryption
pbnoscli(config)# snmp-server user aviz priv_type au
pbnoscli(config)# snmp-server user aviz priv_type AuthNoPriv 
  access                User access permission
pbnoscli(config)# snmp-server user aviz priv_type AuthNoPriv access 
  RO                    Read only
  RW                    Read & Write
pbnoscli(config)# snmp-server user aviz priv_type AuthNoPriv access RO 
  auth                  Authentication
pbnoscli(config)# snmp-server user aviz priv_type AuthNoPriv access RO auth 
  HMAC-SHA-2            
  MD5                   
  SHA                   
pbnoscli(config)# snmp-server user aviz priv_type AuthNoPriv access RO auth md
pbnoscli(config)# snmp-server user aviz priv_type AuthNoPriv access RO auth MD5 
  auth-password         
pbnoscli(config)# snmp-server user aviz priv_type AuthNoPriv access RO auth MD5 auth-password 
  <auth_password>       Auth Password length 8 to 64       
pbnoscli(config)# snmp-server user aviz priv_type AuthNoPriv access RO auth MD5 auth-password password 
  <cr>
pbnoscli(config)# snmp-server user aviz priv_type AuthNoPriv access RO auth MD5 auth-password password 
pbnoscli(config)# 


pbnoscli(config)# no snmp-server user aviz
pbnoscli(config)#

Configuring SNMP

Configure SNMP community

hashtagReference

hashtagExample

Configuring SNMP Trap

hashtagConfigure SNMP Trap

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hashtagDisable PSU/FAN traps:

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hashtagSNMP Trap Logs:

Configuring SNMP Threshold

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Configuring SNMP User

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Configuring SNMP Location

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Configuring SNMP Contact

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Configuring SNMP

Configuring SNMP Location

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Configuring SNMP Threshold

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Configure SNMP community

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Configuring SNMP Trap

hashtagConfigure SNMP Trap

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hashtagExample

hashtagDisable PSU/FAN traps:

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hashtagSNMP Trap Logs:

Configuring SNMP Contact

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hashtagExample

Configuring SNMP User

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hashtagExample

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Example

Configure SNMP Trap

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Example

Disable PSU/FAN traps:

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SNMP Trap Logs:

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Example

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Example

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Example

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Example

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Example

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Configure SNMP Trap

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Example

Disable PSU/FAN traps:

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SNMP Trap Logs:

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Example

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Example