Posts Tagged ‘management’

VLANs in IOS and NX-OS

Tuesday, March 30th, 2010

There are always limitations and system-reserved resources on network platforms.  For years, certain VLANs have been “off-limits” on IOS platforms.  With NX-OS, we also have “off-limit” VLANs, however they are different from the IOS counterparts.

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EtherChannel behavior in NX-OS

Tuesday, February 9th, 2010

I’ve had a lot of discussions with clients about the behavior of Port-Channel interfaces and their associated physical counterparts.  It’s necessary for many parameters of the physical and logical interfaces to be the same.  Here’s the behavior within NX-OS and the preferred way that I make changes to EtherChannels.

In this, we’re going to continue working with the logical interface Po100 and the physical interfaces Eth1/19 and Eth1/20 which will be in the EtherChannel. (more…)

Introducing the Nexus 2148T (Fabric Extenders)

Friday, January 29th, 2010

The Nexus 5000-series (5010 and 5020) support the Nexus 2000-series of switches.  The Nexus 2000-series are fabric extenders (FEXs) – which is essentially a way to stretch out the N5k switch fabric.  Currently there’s only the Nexus 2148T switch, which we’ll cover (at least the basics) in this article.

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NX-OS – great interface range support

Friday, January 29th, 2010

(as I’ve been working with NX-OS as of late, I decided to jot down some thoughts and findings – this is one part in a series of posts on NX-OS)

Have you ever visited a friend’s house and said “I like what you’ve done with the place!”  Many of us have – in which case you should be able to relate to this post.  There are moments in working with NX-OS where I want to tell Cisco “I like what you’ve done with the place!”  This post is about just such a finding — the great support of interface ranges within NX-OS.

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Online Requisition System (ORS)

Thursday, January 13th, 2005

OBSELENCE NOTE: This was written well over a year ago, so may be outdated (ie. may have broken links — if so, let me know and I’ll update).  Just because it’s old doesn’t mean that it’s not worth sharing!

Summary:

THIS PAGE IS UNDER CONSTRUCTION AND MAY BE INCOMPLETE

This is a requisition and PO management system that I built.  The ORS interfaces with Meditech’s data repository (DR) to provide accurate shipping and status from the Meditech system itself (assuming that your site has Materials Management (MM)).  The system could still be used if you don’t have Meditech, but quite a bit of the code would have to be modified (it was originally designed to tightly integrate with Meditech).

Each user is authenticated against a Windows NT/2000 domain.  Group permission can be setup by the NT group that the user is a member of (mapping NT groups to the appropriate ORS groups requires a manual initial mapping).  There are system-wide limits for how much can be ordered without a super-user’s signature, etc.

Another added bonus for this system is the digital signature component’s integration with digital tablets.  I chose to use the ePad tablets (when originally designed, the only ePad tablets around were serial-based — you could probably get by using the USB just as easily).  The only catch is that the proper Windows drivers must be configured on the workstation that has the ePad for the digital signature piece to work properly (digital signatures need only be received from super-users — people who approve purchases over set limits within the system).

For more info, read over the docs below (go to the downloads section below).

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Windows 2000/2003 Directory Services Audit Logging Management Utility

Thursday, January 13th, 2005

Summary:

There’s a way to get very detailed event logging features for core Active Directory services.  Unfortunately, there’s no GUI for doing this — you have to dig in the registry to do it.  This can be cumbersome if you’ve got a list of servers to monitor/diagnose.  This tools allows you to specify a server, select which Active Directory service to log and what logging level it should be set at.

See http://support.microsoft.com/default.aspx?scid=kb;en-us;314980&sd=tech for more information on the registry keys and values.

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