This paper is participating in theNetwork protocols must be known and must be known”Essay campaign

A: “What major do you learn?” B: Router switch related. A: “That’s good! Commissioning or maintenance?” A: “Carry!” B: “……”

@TOC

A, SNMP

SNMP: Simple Network Management Protocol.

  • A network management protocol widely used in TCP/IP networks.
  • Supports the management of software and hardware platforms produced by many manufacturers on the Internet.
  • Used to transfer management information between the network management workstation (NMS) and the managed device

1. Network Management Workstation (NMS)

2. SNMP architecture

3, version,

4. SNMP packets

Second, the MIB

MIB: Management Information Base

  • It is a collection of managed objects and serves as a bridge for the NMS to communicate with the Agent.
  • The network management software connects to the device in a standard manner.
  • Each Agent maintains a MIB, and the NMS can read or set the object values in the MIB.
  • The MIB is stored in a tree structure. Leaf nodes of the tree represent managed objects. They can be identified by a unique path starting from the root node, which is also called Object Identifier (OID).

MIB objects and nodes OID values

Topology and configuration

MIB Broeser Collects all information about switch S5700

1. Experimental topology

2, configuration,

Cloud Basic Switch Configuration

sys
sys S1
int vlan1 
ip add 192.168. 011. 24
Copy the code

Test the connectivity between the switch and the computer Normal connectivity

The SNMP configuration

Snmp-agent sys-info contact libai QQ:724284659Snmp-agent sys-info location QHNU # Configure the location of the administrator snmp-agent community read libai # Configure the read community name snmp-agent community write Huawei configure the write community nameCopy the code

Four, MIB Broeser

MIB Browser is a free MIB Browser tool from ManageEngine. It is used to monitor network devices and servers using SNMP. You can use the MIB browser to load the MIB of a device and perform the GET, GETNEXT, and SET SNMP operations.

1. Execution tools

Enter the switch management address, SNMP protocol number, read/write community name, and SNMP version

2. Wireshark captures packets

SNMP protocol version, get-next-request packet (NMS extracts the Next parameter value from Agent’s MIB in lexicographical order)

3. MIB Broeser collects information

The basic SNMP information configured on the switch is captured. Procedure The routing table

You can view interface information and MAC addresses

== Since this tool is free of charge, all functions are limited. If the conditions meet to buy enterprise management software can achieve information visualization. = =

Famous network management software: CACTI, WhatsUp Gold, Zabbix, PRTG