Tag: 802.1q

Home 802.1q
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26

Mar2014

How do you configure LACP on Comware?

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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

12

Jan2014

What is Ethernet?

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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

02

Jan2014

Why switch trunk/ tagged ports are used?

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Prior to 802.1q, switch vendors used proprietary methods to manage the transfer of VLAN tagged ethernet frames between switches.  These methods added the vlan to the frame  creating a proprietary frame.  Otherwise the other switch would put the frame in the vlan it's port was configured for. Each switch has the ... Read More
January 2, 2014Praveen Bahethi