Time-based ACLs
Ever since Cisco released IOS 12.0.1T we’ve had the ability to broaden the reach of the extended ACL to allow the influence of time.
Read MoreRemote Configuration Tip
I got asked a rather interested question the other day. An engineer needed to make remote configuration changes to a router, but do the commands he needed to run, he would be …
Read MoreIP Multicast Routing Concepts
Can you imagine a video conference taking place on a primarily T1 based WAN? Multiple copies of the same video stream being unicast from the host to each participant. Multiple …
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Public Service Announcement for Engineers
We all know how stressful our jobs can be. And we certainly know about our own hot button issues that press on the nerves in our brain, resulting in great pain and agony which in …
Read MoreSVI Autostate
Switch Virtual Interfaces, or SVIs on Cisco IOS use a feature called autostate to determine the interface availability. By default an SVI will show an up/down (Status / Protocol) …
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Nexus 1000v – Out of Ports on a Virtual Switch?
Yesterday, work presented an interesting issue I wanted to share with everyone. While configuring a new virtual machine one of our systems engineers was presented with an issue he …
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