Friday, 14 September 2018

How to add live pages, timeliness and create polls in presentation??


This presentation has been made on MS PowerPoint with add on installed Office Timelines and Liveslide. Test your internet connectivity before using live webpages and Poll.





Go to the Office Timeline tab and click on import data from excel in which project timeliness are prepared.




Choose from the templates available in this tab and chart is plotted accordingly.



Now got to the Liveslides tab, click live slide, Copy the url of the webpage.



After clicking Insert the slide should look like this.



Once you go to the slide show the webpage should appear as per the connectivity speed.


Similarly we can create audience poll by clicking poll slide, for first time users pls create your account. A temporary link is created for creating poll page.





During presentation click on activate in order to start polling and results can be viewed live.






Thursday, 6 September 2018

Bhangra for Beginners

Class 1:
Single Dhamal
Motion is divided in 2 parts.
Upper Body- You need to a huge U with yours Arms and hand with OM position of fingers.
Lower Body-  Roll Your Left Knee in 45 degree and tap your right keg and then flip.


Working with SNMP and SNMP Traps

You may wonder that how to monitor the Huge servers, storage's, network devices and other critical IT infrastructure!!

There come SNMP  to our rescue. Simple Network Management Protocol (SNMP) is an application-layer protocol used to manage and monitor network devices and their functions. SNMP provides a common language for network devices to relay management information within single- and multivendor environments in a local area network (LAN) or wide area network (WAN).

If count on fingures we can monitor routers, switches and wireless access points to endpoints like printers, scanners and internet of things (IoT) devices etc to DNS, Network managers etc. How does SNMP works??

Simply we need three things:
1. Agent on Device/End Point/Apllication

2.  SNMP Server (NMS) to collect information/Traps

3. Management Information Base (MIB)- This database is a text file (.mib) that itemizes and describes all objects used by a particular device that can be queried or controlled using SNMP. This database must be loaded into the NMS so that it can identify and monitor the status of these properties. Each MIB item is assigned an object identifier (OID).

# We are mapping the Object (like Ping Response, UpTime etc) in the server and establishing connections between the agent installed on the end device. 

SNMP agents send UDP/TCP packet to NMS wrt to the OID mapped.Following messages are sent :

  • GET: Generated by the SNMP manager and sent to an agent to obtain the value of a variable, identified by its OID, in an MIB .
  • RESPONSE: Sent by the agent to the SNMP manager, issued in reply to a GET request. Contains the values of the requested variables.
  • GETNEXT: Sent by the SNMP manager to agent to retrieve the values of the next OID in the MIB's hierarchy.
  • GETBULK: Sent by the SNMP manager to the agent to obtain large tables of data by performing multiple GETNEXT commands.
  • SET: Sent by the SNMP manager to the agent to issue configurations or commands.
  • TRAP: An asynchronous alert sent by the agent to the SNMP manager to indicate a significant event, such as an error or failure, has occurred.
The SNMPv1 SMI defines highly structured MIB tables that are used to group objects that contain multiple variables. Tables contain zero or more rows, which are indexed, so SNMP can retrieve or alter an entire row with a supported command.

SNMPv2c functions within the specifications of SMI. MIB modules contain definitions of interrelated managed objects. The operations that are used in SNMPv1 are similar to those that are used in SNMPv2. The SNMPv2 trap operation, for example, serves the same function as that used in SNMPv1, but it uses a different message format and replaces the SNMPv1 trap.

The most recent iteration of SNMP, version 3, includes security enhancements that authenticate and encrypt SNMP messages as well as protect packets during transit. 

References:
  1. https://searchnetworking.techtarget.com/definition/SNMP
  2. https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/managed_services/8_6_1/cucm/managed_services/snmp.pdf