suse 10如何通过snmp查询网卡状态

June 19th, 2009

在原来部门做产品的时候，在网管上做了大量的工作，但都是基于电信窄带产品的MML命令开发网管接口，效率很低下，实在令我深恶痛绝。于是后来就规划了一个新版本，准备同SNMP网管对接，也定义了mib，试图通过trap发告警，但最终还是没实现。这几天在用nagios，发现其中监控网络流量的插件都是通过snmpwalk、snmpget等命令搞定的，就顺带看看snmp。

首先保证机器上要安装net-snmp <pre class=php name=code># rpm -qa|grep snmp net-snmp-5.3.0.1-25.25</pre>

被查询的机器上需要开启snmpd服务：

  1. 编辑/etc/snmp/snmpd.conf，suse 10上该文件默认是不能工作的，将文件替换成下面的内容即可。

<pre class=php name=code># First, map the community name (COMMUNITY) into a security name

(local and mynetwork, depending on where the request is coming

from):

sec.name source community

com2sec notConfigUser default public

####

Second, map the security names into group names:

sec.model sec.name

group notConfigGroup v1 notConfigUser

group notConfigGroup v2c notConfigUser

####

Third, create a view for us to let the groups have rights to:

incl/excl subtree mask

view all included .1 80

####

Finally, grant the 2 groups access to the 1 view with different

write permissions:

context sec.model sec.level match read write notif

access notConfigGroup “” any noauth exact all none none</pre>

  1. 启动snmpd

<pre class=php name=code>#service snmpd restart</pre>

  1. 配置snmpd自动运行

<pre class=php name=code># chkconfig -e snmpd snmpd 3</pre>

  1. 通过snmp查询所有网卡名字

<pre class=php name=code># snmpwalk -v 2c -c public localhost IF-MIB::ifDescr IF-MIB::ifDescr.1 = STRING: lo IF-MIB::ifDescr.2 = STRING: eth0</pre>

  1. 查询指定网卡状态

<pre class=php name=code># snmpwalk -v 2c -c public localhost IF-MIB::ifOperStatus.2 IF-MIB::ifOperStatus.2 = INTEGER: up(1)</pre>

  1. 查询网卡流量

<pre class=php name=code># snmpwalk -v 2c -c public localhost IF-MIB::ifHCOutOctets.2 //网卡出流量 IF-MIB::ifHCOutOctets.2 = Counter64: 3118479769

snmpwalk -v 2c -c public localhost IF-MIB::ifHCInOctets.2 //入流量

IF-MIB::ifHCInOctets.2 = Counter64: 2352396350</pre>

Simon Lee

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