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Microsoft is in the middle of a major push to overhaul its certification program.  Last year, they announced the new Microsoft Certified Architect (MCA) certification, which is not a written exam but rather a practical exam that will be graded by a board of examiners.  Just applying for the certification will require 10 years’ experience in IT as well as three years of practical experience as a network architect.

For those of us not quite ready for that, Microsoft has announced that it’s also going to revise other certifications.  The MCSE that we’ve all come to know and love is going to be a thing of the past.  In its place will be a series of specialization exams and IP Professional certification tracks.

If you’re currently an MCSE or working it, don’t worry, you have plenty of time to adapt to the new tracks.  Microsoft’s official word is that the new certification structure will be implemented when the next Windows server/client version is released.  For those holding MCDBAs, your current certification will remain valid and you’ll have a chance to upgrade to the new certification with SQL Server 2005.
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ot only is your CCNA exam going to have questions on VLAN trunking protocol, almost any network that has more than one VLAN is going to have VTP running.   Whether you’re planning on passing the CCNA exam or just brushing up on your networking skills, this VTP tutorial will help you learn the basics of this important protocol.

VTP allows switches to advertise VLAN information between other members of the same VTP domain.  VTP allows a consistent view of the switched network across all switches.  When a VLAN is created on one switch in a VTP server, all other VTP devices in the domain are notified of that VLAN’s existence.  VTP servers will know about every VLAN, even VLANs that have no members on that switch.

Switches run VTP in one of three modes.  In server mode, VLANs can be created, modified, and deleted on a VTP server.  When these actions are taken, the changes are advertised to all switches in the VTP domain.  VTP Servers keep VLAN configuration information upon reboot.

In client mode, the switch cannot modify, create, or delete VLANs. VTP clients cannot retain VLAN configuration information upon reboot; they have to obtain this information from a VTP server.

In real-world networks, this is generally done to centralize the creation and deletion of VLANs.  An interesting side effect of the server/client methodology is that if a VLAN is only to have ports on the VTP client switch, the VLAN must still first be created on the VTP server.  The VTP client will learn about the VLAN from the VTP server, and ports can then be placed into that VLAN.
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