This blog was originally started to better help me understand the technologies in the CCIE R&S blueprint; after completing the R&S track I have decided to transition the blog into a technology blog.

CCIE #29033

This blog will continue to include questions, troubleshooting scenarios, and references to existing and new technologies but will grow to include a variety of different platforms and technologies. Currently I have created over 185 questions/answers in regards to the CCIE R&S track!! Note: answers are in the comment field or within "Read More" section.

You can also follow me on twitter @FE80CC1E


Showing posts with label Fibre Channel. Show all posts
Showing posts with label Fibre Channel. Show all posts

Sunday, October 30, 2011

Data Center Enhanced Ethernet


Data Center Enhanced Ethernet (NGDC - Next Generation Data Centers)


  • Priority Based Flow Control (802.1Qbb) - Supports storage traffic and provides CoS flow control
  • CoS Based BW Management (802.1Qaz) - CoS based enhanced transmission, grouping of classes into "service lanes"
  • Backward Congestion Notification (BCN/QCN - 802.1Qau)- end to end congestion management for L2 network
  • Data Center Bridging Capacity Exchange Protocol (DCBXP - 802.1AB) - Auto-negotiation for enhanced Ethernet capabilities (switch to nic)

Saturday, July 30, 2011

NX-OS Fibre Channel Module

The Nexus 5000 can run in two modes

Fabric Mode - The Nexus 5000 switch module runs as a typical switch in a fibre channel network. 
NPV (N-Port Virtualization) Mode - Does not operate as a typical FC switch. Operates like a NPIV enabled host within a fabric.