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Virtual Networking, Virtual Switch Features
Features on Standard and…
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- Virtual Switch Features
Features on Standard and distributed switches
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Discovery Protocol (CDP & LLDP)
-CDP / Cisco Discovery Protocol. Available on Standard switch
-LLDP / Link Layer Discovery Protocol. Not a CISCO specific and only available on distributed switch
-Protocols are to learn information about the other network devices
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Network Health check
-Only on Distributed Switch
-Validate the vDistributed switch configuration with the configuration of the physical switch
NetFlow Collector
-only supported on D Switch
-Monitor traffic on the environment and send report to a centralised server
Port Mirroring
- Any traffic on a port can be send via another port
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- vSphere Standard Switch
-Switch settings are global and are overridden by port group level settings
-VSwitches can be protected from a NIC failure using Link State detection or beacon probing
VM NIC
-Physical Adaptors of the ESXI host
-Each VM NIC can only be assigned to one Virtual NIC
-Virtual switches cannot share VM NICs
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Security Settings
-Forged Transmit (Verify the MAC address of the host)
-Promiscuous mode (Sniff all the traffic on the virtual switch)
- vSphere Distributed Switch
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Scalability
-Only available in Enterprise Plus licensing
-D Switch helps to distribute vSwitch settings
-Provide more functions than the vSphere standard switch
-vCenter is the management Paine of the D Switch
Private vLAN
-Isolate traffic with in a VLAN
-Isolated VLAN - can comm only the VMs on Promiscuous VLANs
-Community VLAN - Can Comm with the same Community VLAN, NOT with other Community VLANs. CAn Comm with any VMs on Promiscuous VLANs
NIC Teaming Method - Route Based on Physical NIC Load (Load based teaming)
-Help to redirect traffic on Physical NICs
-No need to enable LACP or port channel on the physical switch
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