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REASON FOR MAC ADDRESSES AND IP HOW TO
REASON FOR MAC ADDRESSES AND IP MAC OS X

This is a very common setup if you are using multiple VLAN's If it is not the firewall address then you have a layer 3 device acting as a router before traffic reaches your firewall. Is the first hop after your firewall a layer 3 switch that is doing routing?Īnother way to ask this what is the gateway IP of your client computers? Is that gateway the firewall address or is it a different address. You mention internal switch with vlans - is it Layer 3 - so it has ip addresses in each vlan and then 1 link to the firewall? But if internal devices are in vlan A and the firewall connects to the switch in VLAN B, then the firewall will only ever see the mac address of the router that leads to A (probably the 元 switch in vlan B). So if the firewall lan interface and all internal devices are on the same vlan - then they are in the same layer 2 network and mac addresses will be used. Mac addresses are only applicable to layer 2. Need to know more about the setup, but this would be expected behavior if the link from the internal network to the firewall is routed. VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2ġ005 trnet 101005 1500 - ibm - 0 wrote:

REASON FOR MAC ADDRESSES AND IP MAC OS X

Let us know your experiences and thoughts with setting a manual IP address in macOS, and yes this works the same on every Mac OS X and macOS version ever released (so far anyway).Here is the VLan config, Maybe you can help decipher it?ġ default active Gi1/0/4, Gi1/0/5, Gi1/0/6ġ0 Voice-10.1.10.0/24 active Gi1/0/4, Gi1/0/5, Gi1/0/6ġ000 INTERNET-NOT-ROUTED active Gi1/0/2, Gi1/0/3 Don’t be afraid to get your hands a little dirty! Things on a Mac are almost always easier than you think. The guy is brilliant, he’s studying for his PhD but he just automatically assumed that setting a manual IP address was complicated, after I walked him through this, he laughed.

REASON FOR MAC ADDRESSES AND IP HOW TO

Not too hard right?Ĭomputer users can sometimes be funny, my cousin called me frantically asking me how to manually set his IP address, apparently due to the current network conditions at his lab this was a requirement to be able to have internet access. That’s it! The settings take effect and you won’t need to reboot. For example, if the network router IP is “192.168.1.1” and the network has 5 computers in total, manually pick an IP far outside the range of those potential computers (which are likely to be 192.168.1.1 through 192.168.1.6, and so forth, as IPs are typically assigned in a sequential order), so a potential IP address could be “192.168.1.75” or some other number which will not conflict or match an existing network resource

Tip: Picking your own manual IP address? The key is to pick a manual IP address which does not conflict with existing IP addresses on the joined network.

Note: If you do not have these details necessary to be compatible with a specific network, ask the network administrator for the proper assigned IP, subnet, and router to use.

Fill in the IP address, subnet mask, and router, as appropriate to the network you are accessing.

In the pulldown menu next to “Configure IPv4” select “Manually” (or DHCP with manual address, if that’s what you need).

In the lower right, click on the ‘Advanced’ button.

Launch ‘System Preferences’ from the Apple menu  (or Spotlight).