While I haven’t covered 802.1Q yet, I wanted to look at “QinQ“, allowing service providers to tunnel 802.1Q over their own managed ethernet network, which is likely running 802.1Q for customer separation.

Describe the features and operation of 802.1Q Tunneling (802.1QinQ) within a service provider network
Describe the operation and purpose of managed VLAN services

Packet Magazine ran [...]

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I watched the February Certifications Connect: Recertification video from the community site over at Cisco.
Nothing really earth shattering, though it’s not a bad use of time.
When I took my CCNP, my routing exam was BCSN, which has now been changed to BCSI. The big change here is the addition of IS-IS. The switching [...]

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Cert cities review of the 642-891 composite exam

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The exam outline makes reference to the Enterprise Composite Model (ECM) as follows:

Describe the Enterprise Composite Model used for designing networks and explain how it addresses enterprise network needs for performance, scalability, and availability
Explain the role of switches in the various modules of the Enterprise Composite Model (Campus Infrastructure, Server Farm, Enterprise Edge, Network Management)

This [...]

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My CCNP comes due at the end of the year. I figured I’d start slowly studying for the Composite Exam (642-891) early, and write it in the fall. Last time I made notes as I went along, this time I’ll do the same but in blog format.
The composite exam is required for CCNP [...]

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