Encapsulation of PDUs On Trunk Ports
When I studied for my CCIE almost 15 years ago, I recall that I was fascinated by how different PDUs […]
Ethernet, Spanning tree
STP
Spanning tree
Detecting Mismatched Native VLANs
Many people have seen the message logged to their switch about a mismatched native VLAN on a trunk, but how
VXLAN
VXLAN/EVPN – What Are the Challenges in L2-based Networks?
Before diving into a new technology, it is always useful to understand the previous generation of technology, what the limitations
CCDE
Design Considerations for North/South Flows in the Data Center
Traditional data centers have been built by using standard switches and running Spanning Tree (STP). STP blocks redundant links and
CCDE, Spanning tree
STP Notes for CCDE
These are my study notes for CCDE based on “CCIE Routing and Switching v5.0 Official Cert Guide, Volume 1, Fifth
Convergence, Ethernet, Spanning tree, Switching
Ethernet, STP, Topology change and the behaviour of Ethernet
Introduction This post is inspired by a post at IEOC about Uplinkfast and TCN which can be found here. Before
Ethernet
Cisco Flex link
Introduction Flex link is a Cisco solution which replaces STP in certain network topologies. It works by detecting link down
Network Design
Network Campus Design
Introduction Modern networks need to be enabled for voice and video. These applications do not tolerate a lot of loss
Convergence, Ethernet
Detecting Network Failure
Introduction In todays networks, reliability is critical. Reliability needs to be high and convergence needs to be fast. There are
Announcement
STP session up @ CLN
Hi, I’m done with the two Spanning Tree Protocol webinars at the Cisco Learning Network. You can find them here.