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มารู้จัก Protocol SNMP และการ Config บน Router CISCO โดย Mr.Jodoi
นอกจากการดูบทความนี้แล้ว คุณยังสามารถดูข้อมูลที่เป็นประโยชน์อื่นๆ อีกมากมายที่เราให้ไว้ที่นี่: ดูความรู้เพิ่มเติมที่นี่
สอนการ Config snmp บน Cisco โดยอาจารย์เกรียงศักดิ์ นามโคตร ( Mr.Jodoi )
http://www.jodoi.com , http://www.jodoi.org
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Application Protocol ที่ต้องรู้จัก โดย Mr.Jodoi
Application Protocol ที่ต้องรู้จัก โดยอาจารย์เกรียงศักดิ์ นามโคตร (Mr.Jodoi)
http://www.jodoi.com , http://www.jodoi.org
https://www.facebook.com/MrJodoi
Giám sát mạng bằng SNMP và PRTG
How SNMP Works – a quick guide
Download Nagios XI to start monitoring devices with SNMP ➜ http://nag.is/snmpxidd
Learn how SNMP works in just minutes with Aaron! Simple Network Management Protocol (SNMP) is an important standard to learn for anyone in IT in order to monitor network devices and servers without installing dedicated agents on target machines (i.e. agentless). Thousands of various network devices \u0026 operating systems from different vendors support SNMP to deliver critical information on important metrics like health, usage, service state and more. This introduction video explains topics like:
Basic background info
Key terminology like OID and MIB among others
How SNMP easily monitors devices like switches \u0026 routers
How SNMP works with ports, messages, traps, and more
SNMP versions (learn all about v3: https://youtu.be/NgceiOe9SO0)
Next Steps:
1. Learn how Nagios provides complete monitoring of SNMP ➜ https://www.nagios.com/solutions/snmpmonitoring/
2. Watch SNMP monitoring w/ Nagios XI (series) to monitor anything switches, routers, OIDs, traps, and more. Also see how to easily manage MIBs \u0026 use our SNMP wizards ➜ https://www.youtube.com/watch?v=oT0tPsrEQgQ\u0026list=PLNryIrpC_mAFLgaaA61U0tjH0qV1HP57\u0026index=1
3. Download Nagios XI (free) ➜ http://nag.is/snmpxidd
4. Enjoy life
5. SUBSCRIBE + enable notifications to keep learning!
Nagios XI product page: http://nag.is/snmpxipd
Nagios homepage: https://www.nagios.com
SNMP NetworkMonitoring ITprofessional Nagios
SNMP Explained | Simple Network Management Protocol | Cisco CCNA 200-301
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SNMP stands for Simple Network Management Protocol.
SNMP is a standardized protocol used to collect and organise device information on a network. It does this over UDP port 161 (Traps are received on port 162).
There are three versions of SNMP.
SNMPv1 which is the original version of SNMP
SNMPv2c – This is the revised version which introduced some enhancements. Most notably the use of community strings for security. You can think of a community string like a password.
SNMPv3 – Which is another improvement adding authentication and encryption. This version is much more secure than the previous versions.
A device that is SNMP enabled is known as an agent. An SNMP agent has several objects that can be interacted with. Some objects are part of the industry standard, and some will be vendorspecific for this device.
For example, this router will have objects for, name, uptime, interfaces, and the routing table to name just a few.
Each object is assigned an object identifier or OID. The OID is a sequence of numbers, which at first glance can look like an IP address. This is used to identify the object in a file called a MIB which stands for Management Information Base.
To interact with these object, we need something called a network management system or NMS. The NMS is a piece of software that can communicate with the SNMP agent.
There are a few ways the NMS can speak to the agent. The first way is by using GET requests. Get message include get, getNext and getBulk. They are used to actively request information from the agent.
The second way we can talk to an agent is by using SET requests. A set request is used to change a value on the agent.
The last method I want to talk about is Traps and Informs. Agents use traps and informs to actively communicate with the NMS. The agent can send a trap or inform to the NMS when an event occurs on the device.
Traps and informs are two different types of massage but they both do the same thing. The difference is that informs are reliable. An inform message will wait for an acknowledgement from the NMS. If it doesn’t receive one, it will resend the inform. A trap on the other hand is sent and then forgotten. Even though informs are consider reliable, both still use UDP.
ccna cisco networking
นอกจากการดูหัวข้อนี้แล้ว คุณยังสามารถเข้าถึงบทวิจารณ์ดีๆ อื่นๆ อีกมากมายได้ที่นี่: ดูบทความเพิ่มเติมในหมวดหมู่WIKI
