Collection of useful, relevant or inane places on the the Internets for 25 Jan 11:
- IP Multicast | CCIE Blog – Brian McGahan from INE has been posting some outstanding content on IP Multicast. Highly recommended.
- VMware Labs » » VGC – VMware announces tools to access files on guests. Security Managers everywhere get to say "I told you so" because there VMware guests are not isolated from VMware hypervisor.
VMware Guest Console has the following features :
Lists processes running in the Guest.
Start new programs in the Guest
End running processes in the Guest
Copy programs or scripts to multiple guests and execute them.
Useful for things like antivirus installation, agent deployment, test deployment etc
All the above operations can be performed on –
on a single VM
or all the VMs on a host
or on all the VMs on all connected hosts
Oh hear. Parts of corporate security will be upset. (Via http://blog.scottlowe.org/
- End-of-Sale and End-of-Life Announcement for the Cisco Secure Access Control Server for Windows and Secure Access Control Server Solution Engine 4.1 [Cisco Secure Access Control Server for Windows] – Cisco Systems – EoL Date for ACS 4.1 is November 30, 2011. And so passes the worst piece of network management software that everybody actually uses because it works and its cheap. In good news, that loathsome Java interface that set the UI standard for a future Cisco NMS products is finally dead. Where do I spit.
- boche.net – VMware Virtualization Evangelist –
However, I believe my findings are consistent with the majority of what I’ve gathered from the various credible sources. I’m not sold on jumbo frames as a provider of significant performance gains. I wouldn’t break my back implementing the technology without an undisputable business justification.
Jason Boche (well respect VMware and all round good guy) has published some startling results on the lack of benefit of Jumbo Frames. This finding concurs with other work, I will no longer recommend the use of Jumbo Frames for server performance.
- Cisco IOS Hints and Tricks: Schedule reload before configuring the router – Ivan shows us some serious TCL-fu by showing us an EEM script that enhances the "reload in" IOS feature.
- evilrouters.net » Example Cisco IOU Topology –
Jeremy continues to unpick the mysteries of IOS on Unix and wlks through the NetMAP file.
This post demonstrated a number of concepts that should be useful for those wanting to use IOU.
First, we showed how the routers connect “physically”.
Second, we showed how to construct a working NETMAP file to match our topology.
Third, we started up our IOU instances and connect them across hosts and to the outside world.
Fourth, we configured our routers (even configuring OSPF).
Last, we showed how to verify we had connectivity with the outside world.
- Cisco IOS Hints and Tricks: Intelligent Redundant Framework (IRF) – Stacking as usual –
Ivan has been researching the HP IRF technology and concludes that it's stacking and no different than existing technologies – and talks about why.
Note: This reinforces my oftstated comment that learning fundamentals is important, because it's always the same.