Recurrent Problem Solving

Here are some sample of Recurrent Problems i (Troubleshooting ask for knowledge, long term problem solving ask for knowledge, transversal domains practice and long term experience) did solve. People generaly, don't like problems, for me i like to solve them:

LAN-Wifi Problem Solving

Description	Context	Certif. Exam 1
DHCP range overlaping issues	Some hundred users (ToIP installation)	CCIE R&S lab.
Search for fantom equipement	unregistered servers (during site assessment)	CCIE R&S lab.
Search for high CPU usage on 4500 Serie Catalyst Cisco Switch	Cabling loop on low-end user switch	CCIE R&S lab.

WAN Problem Solving

Description	Context	Certif. Exam
BGP area database route failure	7200 Serie Cisco Router on Renater (French Universities Internet Network )	CCIE R&S lab.
Route load-balancing problem for UDP trafic	3800 Serie Cisco Routeurs (Bank Network)	CCIE R&S lab.

VoIP/ToIP Problem Solving

Description	Context	Certif. Exam
Current loop in cabling system and wrong rack grounding, random reset of IP Phones	some 100 users (old building)	CCIE R&S lab.

Security Problem Solving

Description	Context	Certif. Exam
VPN between a subsidiary in Shanghai (China) and Headquaters in Paris (France), was MTU problem	VPN on Internet	CCIE R&S lab.

Note: For more efficiency in solving the issue, i can ask you to provide me with up to date informations: Revelant Network map with devices IP address and Name A description of the recurring problem (symptoms, start problem date and time , recurring period, impacted sites and users) Access to the configuration of the revelant devices If you don't have these up to date information, existing assessment could be neccessary.

1 revelant Certification Exam

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