Nagios monitors Cisco switch traffic

First, switch configuration

snmp-server Community public ro

Snmp-server Enable traps

Snmp-server Host *.*.*.* version 2c public

snmp-server trap-source VLAN 1

Two, Nagios server configuration

Download check_traffic.sh script, chech_traffic.sh not nagios-plugins comes with plug-in, need to download it yourself.

chmod 777 check_traffic.sh Giving script execution permissions

1. Get the index information for the switch

[Email protected] ~]#/usr/lib64/nagios/plugins/check_traffic.sh-v 2c-c public-h 10.10.3.252-l
List Interface for host 10.10.3.252.
Interface Index 1 orresponding to Vlan1
Interface index 5137 orresponding to StackPort1
Interface index 5138 orresponding to Stacksub-st1-1
Interface index 5139 orresponding to Stacksub-st1-2
Interface index 10101 orresponding to GIGABITETHERNET1/0/1
Interface index 10102 orresponding to GIGABITETHERNET1/0/2
Interface index 10103 orresponding to GIGABITETHERNET1/0/3
Interface index 10104 orresponding to GIGABITETHERNET1/0/4
Interface index 10105 orresponding to GIGABITETHERNET1/0/5
Interface index 10106 orresponding to GIGABITETHERNET1/0/6
Interface index 10107 orresponding to GIGABITETHERNET1/0/7
Interface index 10108 orresponding to GIGABITETHERNET1/0/8
Interface index 10109 orresponding to GIGABITETHERNET1/0/9
Interface index 10110 orresponding to GIGABITETHERNET1/0/10
Interface index 10111 orresponding to GIGABITETHERNET1/0/11
Interface index 10112 orresponding to GIGABITETHERNET1/0/12
Interface index 10113 orresponding to GIGABITETHERNET1/0/13
Interface index 10114 orresponding to GIGABITETHERNET1/0/14
Interface index 10115 orresponding to GIGABITETHERNET1/0/15
Interface index 10116 orresponding to GIGABITETHERNET1/0/16
Interface index 10117 orresponding to GIGABITETHERNET1/0/17
Interface index 10118 orresponding to GIGABITETHERNET1/0/18
Interface index 10119 orresponding to GIGABITETHERNET1/0/19
Interface index 10120 orresponding to GIGABITETHERNET1/0/20
Interface index 10121 orresponding to GIGABITETHERNET1/0/21
Interface index 10122 orresponding to GIGABITETHERNET1/0/22
Interface index 10123 orresponding to GIGABITETHERNET1/0/23
Interface index 10124 orresponding to GIGABITETHERNET1/0/24
Interface index 10125 orresponding to GIGABITETHERNET1/0/25
Interface index 10126 orresponding to GIGABITETHERNET1/0/26
Interface index 10127 orresponding to GIGABITETHERNET1/0/27
Interface index 10128 orresponding to GIGABITETHERNET1/0/28
Interface index 12001 orresponding to Null0
Interface index 12002 orresponding to FastEthernet0

The commands are annotated as follows: #/usr/lib64/nagios/plugins/check_traffic.sh [-v] [-6] [-I Suffix] [-F s| S] [-P N] [-r]-v 1|2c|3-c snmp-community-h host [-l]-I interface-w in,out-warning-value-c In,out-critical-valu E-k/m-b/b

2. Get the port traffic for the switch G1/0/28

[Email protected] ~]#/usr/lib64/nagios/plugins/check_traffic.sh-v 2c-c public-h 10.10.3.252-i 10128-w 200,300-c 40 0,500-k-B
Ok-it ' s The first time for this plugins run. We ll get the data from the next time.

[Email protected] ~]#/usr/lib64/nagios/plugins/check_traffic.sh-v 2c-c public-h 10.10.3.252-i 10128-w 200,300-c 40 0,500-k-B
Ok-the traffic in are 82.00KB, out are 0.0KB, Total is 82.00KB. The Check Interval is 290s | In=82.00kb;200;400;0;0 Out=0.0kb;300;500;0;0 Total=82.00kb;500;900;0;0 Interval=290s;1200;1800;0;0

3. Configuring the Nagios configuration file

[[Email protected] ~] #vim/etc/nagios/nagios.cfg

Cfg_file=/etc/nagios/objects/switch.cfg #去掉该行前面的 # character

4. Configure Commands.cfg

[Email protected] ~]# vim/etc/nagios/objects/commands.cfg

Define Command{

Command_name check_switch_traffic

Command_line $USER 1$/check_traffic.sh-v 2c-c public-h $HOSTADDRESS $-I $ARG 1$-w $ARG 2$, $ARG 3$-C $ARG 4$, $ARG 5$-M- B
}

5. Configure Switch.cfg

Define Host{
Use Generic-switch; Inherit default values from a template
HOST_NAME h17_2960sw1_3.251; The name we ' re giving to this switch
Alias Linksys srw224p Switch; A longer name associated with the switch
Address 10.10.3.251; IP Address of the switch
Hostgroups switches; Host groups This switch are associated with
}

Define Host{
Use Generic-switch; Inherit default values from a template
HOST_NAME h18_2960sw1_3.247; The name we ' re giving to this switch
Alias Linksys srw224p Switch; A longer name associated with the switch
Address 10.10.3.247; IP Address of the switch
Hostgroups switches; Host groups This switch are associated with
}

Define Service{
Use GENERIC-SERVICE,SRV-PNP; Inherit values from a template
HOST_NAME h17_2960sw1_3.251
Service_description CHECK_TRAFFICE_G1/0/28
Check_command check_switch_traffic!10128!200!400!500!800
}

Define Service{
Use GENERIC-SERVICE,SRV-PNP; Inherit values from a template
HOST_NAME h18_2960sw1_3.247
Service_description CHECK_TRAFFICE_G1/0/28
Check_command check_switch_traffic!10128!200!400!500!800
}

6. Configure permissions (pending validation)

[Email protected] ~]# chmod 777/var/tmp/check_traffic_10.10.3.249_10128.hist_dat_root__64

7. Restart the Nagios service

[Email protected] ~]#/etc/init.d/nagios restart

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Nagios monitors Cisco switch traffic