The Journey of a Network Engineer:

Port

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February 27, 2011  7:41 AM

Errdisable Port State Recovery on the Cisco IOS



Posted by: Sulaiman Syed
Cisco, errdisable, ios, loopback, no shut, Port, recovery, shut

Ports in Cisco switches go into errdisable state for various reasons. some reasons are configured such as arp-inspection, bpdugaurd, psecure-violation, etc. While some are turned on by default such as loopback, link-flap, etc. Following the typical default configuration of cisco switch.  Once it...

December 26, 2010  3:45 AM

How to aggregate ports?



Posted by: Sulaiman Syed
Aggregation, Cisco, LACP, PAgP, Port, vlan

In many cases we would require higher bandwidth within the organization while we have 1GB uplinks, or we stack switches and want to have multiple uplinks from each switch, or just to keep redundant link that is unblocked by STP. All these are simple scenarios that we face and the solution is...


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