I'm afraid my expressions may be rude or hard to read, because I'm not so good at English. But please, please be patient! I will try hard to learn English! I have more than 10 years of experience with various technologies, ranging from routing and switching to security and voice technologies. I'm involving in network engineering and consulting, project management. I'm currently holds various Cisco certifications, including CCIE-Routing and Switching, CCIP, CCNP-Security, CCNA-Wireless and CCDP.