Tag: Layer2

27

Mar2014
We have three HP Comware switches in a triangle with each device being at default configuration after enabling Multi-Instance Spanning Tree (MSTP). We’ll be optimizing the network by adding load-balancing for MSTP and across 20 vlans and link aggregation. A quick overview of the Layer 2 configuration of the network [5800A]display lldp ... Read More
March 27, 2014Praveen Bahethi

26

Mar2014
Link Aggregration Control Protocol (LACP) is used to combine multiple ethernet ports into a bundle.  This bundle shows up as one port to spanning tree protocol (STP) allowing multiple connections to occur between switches without blocking.  This protocol is also used to connect multiple server links to a switch to ... Read More
March 26, 2014Praveen Bahethi

15

Jan2014
Configuring STP on Cisco switches is straightforward since STP is on by default.  This default ensures loop-free topologies when connecting Cisco Switches and is very useful in Campus and Access LANs. For our example, we'll be using the network topology below. The switches are in a triangle with switchA as ROOT of ... Read More
January 15, 2014Praveen Bahethi

12

Jan2014

What is Ethernet?

Ethernet was developed by Robert Metcalfe at Xerox PARC in the early 70s and is a packet switching technology that uses Carrier Sense Mulit-access with Collision Detection (CSMA/CD). Carrier Sense The device (Network Inteface Card) determines if the media (wire) is available, no electrical signalling we can transmit. Multi-access All devices can sense the ... Read More
January 12, 2014Praveen Bahethi