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Ahmed Hassan
by Ahmed Hassan , IT Manager , Allmed Middle East

lots of things may cause failure in network  

some of them are 

the security attacks , wrong configuration , Failed software and firmware upgrade or patches , Link failure

Mohammed Ismail khan
by Mohammed Ismail khan , Network Security Engineer , Alpha Data

DOS, DDOS, MAC table over flow, ARP attack these are the attacks

 

Back plane and management plane and data plane traffic should design properly.

 

Try to limit the broadcast traffic which consume lot of utilization of switch memory using Vlans and private vlans.

 

Use Cisco access server (out of band) if your switch is down or fail. In is case you can connect the switch and make it up from any where but you need to configure AUX port on your switch with your company modem. check your switches models for aux ports availability. 

Asim Ali
by Asim Ali , SAP HCM Support Officer , Al Tilal Steel Company Limited

Well basically ● the network links should be checked ● the configuration might be affecting ● the hardware failure These are the primary causes to a network failure of router and switch network.

Majibul Sekh
by Majibul Sekh , IT Support Engineer , Entelyst W.L.L

It depends upon the type failure, whether device are down operationally or administratively, power outage, port media mismatch, improper cabling, speed/duplex setting, incompatibility between firmware and device hardware, software failure, upgrade or patches are most common reasons.

Daoud Daoud
by Daoud Daoud , Information Technology Operations Team Lead , Hikma Pharmaceuticals - Jordan

If it is already implemented and tested it will be stable unless Human configuration change, which can be tracked by Logs and TACACS

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