February 2014 archive

Cisco UCS SAN Boot

If you have a Cisco UCS system, you probably want to do SAN boot.  It is a simple, and quick  task to perform.  This is a follow up to an earlier post on UCS with local FC storage.   Just remember that boot order changes require a reboot of the Service Profiles and associated blades. …

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Permanent link to this article: https://daherlabs.mywire.org/wordpress/?p=391

Cisco Wireless Application Visibility

If you have Cisco Wireless Lan Controllers (WLC) version 7.4 and newer, there is a nice new feature called “Application Visibility” that you can turn on per SSID.  There are only a few steps to enable this feature and get visibility into your wireless network.  You must do this on every WLC in your network …

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Permanent link to this article: https://daherlabs.mywire.org/wordpress/?p=386

Cisco 8510 WLC Enable 10G Ports

We are in the process of installing 2 Cisco 8500 wireless controllers.  After going through the initial configuration, we noticed that the ports Link Status on the 8500 controller showed Down and we were unable to ping our controllers:   (Cisco Controller) >show stats port sum    Link               …

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Permanent link to this article: https://daherlabs.mywire.org/wordpress/?p=358

PVST+ Spanning-tree Summary

Roles Bridges: root non-root Ports: Root Port (RP) Designated Port (DP) Non-designated Port (NDP)   Overview For each VLAN choose one root bridge The switch with the lowest Bridge ID (BID) BID consists of 4-bit priority value (multiple of 4096) + 12-bit VLAN ID + MAC address Priority defaults to 8 (8 * 4096 = …

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Permanent link to this article: https://daherlabs.mywire.org/wordpress/?p=311

Cisco UCS with FC Local Storage

If you are trying to add FC storage to your UCS environment, you can quickly do so by connecting a storage server using FC staright into the Cisco UCS 6100 Series Fabric Interconnects.  I have in the past used Openfiler, Nexenta and now use Tegile as my storage platform.  Here is a quick guide to …

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Permanent link to this article: https://daherlabs.mywire.org/wordpress/?p=332