Monday 16 March 2015

VMware Opens Up On Cisco


How Cisco and VMware are working virtually neck and neck on the SDN market, the two continue the war of words on the mindshare battle. Cisco recorded another element blog last month, which included the critical points of the VMware NSX platform.Cisco network virtualization VMware believes imposes restrictions on the version of Open vSwitch to use with the integration of products and limits VTEP:

VMware NSX is a LAN Emulation SDN controller that integrates with the NSX vSwitch VTEP provided by VMware vSphere. Today VMware is a multi-hypervisor that enables multi-hypervisor controller provided with VMware NSX Open vswitch version of talking with Xen hypervisors, and KVM (get the version of VMware OVS). VMware virtual switch control firmly API for VTEP kernel in vSphere, unlike RedHat, Xen Server and Microsoft. VMware uses the informational RFC, OVSDB integrate some vSwitch and the third party equipment VTEP.

The blog, written by Frank D'Agostino, senior director of Cisco business unit networks together, trying to extol the virtues of the new BGP EVPN Control Plane Cisco Nexus 9000 for VXLAN on the switch, which is a alternative to the request of the company Centric infrastructure Plan (ACI) control for switching data center. VMware and other competitors would like people to believe that Cisco supports ACI or offer BGP as a defensive maneuver.

Defensive, perhaps. But the consensus seems to be BGP, but is not a substitute for the AIT. Cloud operators may prefer a standard routing protocol to route VXLAN vs. an exclusive technique of applying the policy, which may be more appropriate for companies already immersed in the proprietary Cisco kit.

For points of D'Agostino on VMware requires its own against an OVS download the open source community, VMware says it offers a binary version of OVS NSX, but guests can use an open source version with NSX so prefer. everything we do is open source, said Bruce Davie, CTO for VMware network and a chief engineer in the network and security business unit. All we have is Apache, an open source license.

Points D'Agostino is a Stateless Tunneling Transport (STT) Total Method non-encapsulation issue.Even VMware overlay, inherited the Nicira acquisition, is now open source, after years of not being so.This January 20 support patch offered STT Linux kernel network, and it was the first time VMware / Nicira made the code available to the open source community, says Davie. VMware has also made the code available as part of this month OVS.

To the point of D'Agostino on VMware virtual switch for tight VTEPs API control, Davie answers: There will be some unexpected private API at all. But we have a set of APIs expose root clients. I do not remember all customers complain API not be there.Adds analyst IDC network data center Brad Casemore, I'm not sure that the seller may require the unconditional opening.

Sunday 1 March 2015

VCP550D Sample Question : 4

QUESTION 4:

An administrator of a secure environment needs to add an iSCSI target to a new ESXi host using the vSphere client. The administrator has configured discovery and performed a rescan operation,but the iSCSI target does NOT appear. Which action should the administrator take for the target to appear in the vSphere client?

A. Configure appropriate CHAP authentication settings
B. Bind a VMkernel port to the iSCSI initiator
C. Configure Jumbo Frames prior to adding iSCSI targets
D. Enable iSCSI in a vSphere Distributed Switch configuration

Answer: A