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5. vSphere Switch Configuration Options and Policies.txt -...

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100:00:00,300 --> 00:00:08,100We will now take a closer look at the other options of these sorts of we say edit anumber of reports200:00:08,110 --> 00:00:08,890elastic.300:00:08,910 --> 00:00:10,910Now, this is an interesting element.400:00:11,610 --> 00:00:17,790It used to be that when you defined a virtual switch, one of the things you askedfor was how many500:00:17,790 --> 00:00:22,830ports do you want by default on that virtual switch if memory serves?600:00:22,830 --> 00:00:32,040I think the default was 128 virtual ports now was you could, of course, increasethat number.700:00:32,460 --> 00:00:39,780Each port actually consumed a very small amount of memory is only very small boatfor each port.800:00:39,780 --> 00:00:46,080You add to the voice which you are consuming a small amount of memory with viceversa, even though900:00:46,080 --> 00:00:47,220it is elastic.1000:00:47,220 --> 00:00:52,560So it will add those virtual ports to the virtual switch as they.1100:00:53,780 --> 00:01:00,210Are required by the host automatically and security top.1200:01:00,800 --> 00:01:07,130Some very interesting options here now, as we saw on the groups, we can overridethese settings and1300:01:07,130 --> 00:01:09,920I'll show you that again in just a few moments.14
00:01:09,920 --> 00:01:12,680But these are the defaults for this particular switch.1500:01:13,130 --> 00:01:21,710Promiscuous mode, promiscuous mode allows the virtual machine to receive trafficthat is intended for1600:01:21,710 --> 00:01:25,280other virtual machines on the same virtual switch.1700:01:25,700 --> 00:01:27,470Now, it's rare that you'll turn that on.1800:01:27,860 --> 00:01:35,270However, its main purpose is for something like an intrusion detection system orintrusion prevention1900:01:35,270 --> 00:01:38,600system that needs to scan the traffic.2000:01:38,630 --> 00:01:42,170This is going to all of the other virtual machines.2100:01:43,160 --> 00:01:50,180Mac address changes allows the operating system running inside the virtual machineto request a change2200:01:50,180 --> 00:01:51,410to its Mac address.2300:01:51,710 --> 00:01:58,340Again, you normally leave this on the default of reject, but you might use it withsome load balancing2400:01:58,340 --> 00:02:07,790solutions like Microsoft Windows network load balancing in unicast mode, because inthat mode it generates2500:02:07,790 --> 00:02:12,800a virtual Mac address, which is shared between the two virtual machines.2600:02:13,580 --> 00:02:19,610And if you have that set to reject, it won't be able to do that because it willwant to change its2700:02:19,610 --> 00:02:24,890
MAC address to the virtual Mac address that it is using for that function.2800:02:26,960 --> 00:02:36,500And Forge transmits allows the virtual machine to send traffic using Mac addressesthat do not match2900:02:36,500 --> 00:02:42,080its own Mac addresses again, you'll normally leave that to reject.3000:02:42,560 --> 00:02:47,360There is one other scenario under which you might need to turn all of these toaccept, which is if3100:02:47,360 --> 00:02:55,970you're doing a lab environment within nested virtualization, which is exactly whatI am doing on my3200:02:56,060 --> 00:03:04,700parents host, where I'm running my four VMS, including the two ESX hosts that I'mrunning these labs3300:03:04,700 --> 00:03:04,870on.

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Term
Spring
Professor
N/A
Tags
IP address, virtual machine, MAC address

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