网络拓扑自动发掘之三层设备惯用的SNMP OID的含义

原文地址：https://blog.csdn.net/maty_wang/article/details/81305070

1. ipNetToMediaIfIndex

Name/OID: ipNetToMediaIfIndex.1.192.168.1.; Value (Integer):
Name/OID: ipNetToMediaIfIndex.1.192.168.1.; Value (Integer):
Name/OID: ipNetToMediaIfIndex.2.192.168.4.; Value (Integer):
Name/OID: ipNetToMediaIfIndex.2.192.168.4.; Value (Integer):
Name/OID: ipNetToMediaIfIndex.3.116.229.177.; Value (Integer):
Name/OID: ipNetToMediaIfIndex.3.116.229.177.; Value (Integer): 

该输出的要点是要好到value相等，且数目为2的ipNetToMediaIfIndex，相等的两个结果中一个表示本端设备的Ip,一个表示对端设备的ip.

2. ipNetToMediaType

Name/OID: ipNetToMediaType.1.192.168.1.; Value (Integer): static ()
Name/OID: ipNetToMediaType.1.192.168.1.; Value (Integer): dynamic ()
Name/OID: ipNetToMediaType.2.192.168.4.; Value (Integer): static ()
Name/OID: ipNetToMediaType.2.192.168.4.; Value (Integer): dynamic ()
Name/OID: ipNetToMediaType.3.116.229.177.; Value (Integer): dynamic ()
Name/OID: ipNetToMediaType.3.116.229.177.; Value (Integer): static ()

该输出表示映射(mapping)的类型，4表示静态，也就是4代表的是本机的Ip,3代表动态，也就是对端设备的ip

3. ifDescr

Name/OID: ifDescr.; Value (OctetString): FastEthernet0/
Name/OID: ifDescr.; Value (OctetString): FastEthernet0/
Name/OID: ifDescr.; Value (OctetString): Ethernet1/
Name/OID: ifDescr.; Value (OctetString): Ethernet1/
Name/OID: ifDescr.; Value (OctetString): Ethernet1/
Name/OID: ifDescr.; Value (OctetString): Ethernet1/
Name/OID: ifDescr.; Value (OctetString): Null0

该输出表明了对应接口的名称

4. ifType

Name/OID: ifType.; Value (Integer): ethernetCsmacd ()
Name/OID: ifType.; Value (Integer): ethernetCsmacd ()
Name/OID: ifType.; Value (Integer): ethernetCsmacd ()
Name/OID: ifType.; Value (Integer): ethernetCsmacd ()
Name/OID: ifType.; Value (Integer): ethernetCsmacd ()
Name/OID: ifType.; Value (Integer): ethernetCsmacd ()
Name/OID: ifType.; Value (Integer): other ()

该输出表示了接口的类型

通过上述四个oid即可确定设备之间的