Category : 201

201, vCenter
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VSAN and vSphere 6.5…

There is a not so nice feature in vSphere 6.5 which makes VSAN explicitly dependent on vCenter. It is detailed in the release notes but easily¬†overlooked…¬†http://pubs.vmware.com/Release_Notes/en/vsan/66/vmware-virtual-san-66-release-notes.html

Fixed in the latest update of vSphere/vCenter, but just be aware of the following steps before bouncing vCenter for maintenance or upgrade…

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201
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Making room for NSX… Deleting ESXi VIB’s

VIB’s are kernel modules which make up the various capabilities of the VMware vSphere ESXi hypervisor together with hardware device drivers. When building vSphere ESXi Servers, hardware vendors can assist by providing ISO images which include hardware monitoring VIB’s together with common storage and network driver VIB’s for their servers.

There is a limit to the size of the vSphere ESXi boot image location (bootbank) of around 250MB and unfortunately, some hardware vendor ISO images are filled with so many device drivers, there is no room for additional drivers. This can cause NSX host preparations to fail…

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201
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RFC 6598 – IANA Reserved Address Space 100.64.0.0/10

Just a quick post to make reference to RFC 6598 and the IANA reserved address space 100.64.0.0/10 which spans 100.64.0.0 – 100.127.255.255.

https://tools.ietf.org/html/rfc6598

As detailed in the RFC description, it is intended for use on Service Provider networks however, it may be used in a manner similar to RFC 1918 private address space on routing equipment that is able to do address translation across router interfaces when the addresses are identical on two different interfaces.

From an NSX perspective, optimal use case is between a NSX Distributed Logical Router (NSX Tier-1 Router) and Edge Router (NSX Tier-0 Router). All good!

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201
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NSX-vSphere 6.2 VIB’s and VXLAN Troubleshooting

The following KB article details VXLAN troubleshooting but note the change to the location of the NSX-vSphere 6.2 VIB’s…

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2124894

In NSX 6.2 and later, VIB’s now have a unique directory:
https://NSX_Manager_IPaddress/bin/vdn/vibs-6.2.0/5.5-2926818/vxlan.zip

 

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201
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VMware NSX and IBM SoftLayer Cookbook

A brief blog entry and a somewhat dated “cookbook” which is in the process of being updated, but I learnt of a great use case for NSX to support extensibility of SoftLayer deployments. When the updated cookbook is available, I will share…¬†http://wpc.c320.edgecastcdn.net/00C320/VMware_at_SoftLayer_CookBook…

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