- APPLE WHAT IS DHCP CLIENT ID FULL
- APPLE WHAT IS DHCP CLIENT ID PORTABLE
- APPLE WHAT IS DHCP CLIENT ID VERIFICATION
- APPLE WHAT IS DHCP CLIENT ID MAC
So, if anyone chooses to remain opposed to this, they're saying that waiting 10s every time you wake a portable device from sleep and want to use the network connection is a worthwhile tradeoff to accommodate DHCP servers that don't respect leases and switches that can't adequately resolve an ARP entry conflict in a timely manner. The key thing to remember is that this shouldn't happen at all on healthy networks.
APPLE WHAT IS DHCP CLIENT ID FULL
If this were a full negotiation, it would take around 5s.
The network events shown in the article show that this occurs in about 1s between the time that the interface comes up, 0.3s, and the time the interface is active, 1.3s. Once the conflicting machine gets a new IP address, everything returns to normal. * Even if you do have a conflicting IP address, that conflict only exists until the DHCP server issues you a new one (iOS immediately performs the DHCP request after sniffing) * If you have a valid lease, there should be no conflicting IP addresses on the network You're falsely attributing this behavior to your iPhone/Mac. If you're uncomfortable with this trade off, you should stay away from Apple devices. This is especially true for devices whose use-pattern will involve frequent on-off usage. The difference between 10s to network ready and 0.3s to network ready is more than significant it's monumental. Devices like the iPhone and iPad are switched on and off very frequently. Even if you do encounter a failure mode, the error will clear a second or two later when a new address is negotiated via DHCP and the subsequent ARP update. If you have to reboot your router frequently, you should replace it. For many consumer routers, this will occur when the router is rebooted. The most common failure scenario is where the DHCP server has lost its DHCP lease table. If you are on a known network, your DHCP lease is still active, and network equipment is working as expected, all of these assumptions are safe.
APPLE WHAT IS DHCP CLIENT ID VERIFICATION
The most significant of which is the verification of the DHCP server's Ethernet address as correlated to IP.
The DHCP stack in iOS does some profiling that should reliably detect whether it is, in fact, on the network that it expects. instead of just downvoting, maybe reply? It is actually quite common that DHCP leases on a network get reset for various reasons, and if you just jump on the network without revalidating your lease, you are actually quite likely to just "presumptuously" steal someone else's IP address.) (edit: I just got downvoted, and then asked the people in the room with me, and they seemed to agree with my perceived correlation regarding the "another computer is using 192.1.0.1" issue. Ok, seriously? That isn't a bug in an implementation somewhere, but in fact a feature that Apple actually is proud of? Am I the only one who finds that if you get a room full of people sitting around with Macs at least one person gets their IP address stolen by someone else?
APPLE WHAT IS DHCP CLIENT ID MAC
If the network is recognized (and presumably if the Mac knows that the DHCP lease is still active), it immediately and presumptuously configures its IP interface with the address it knows is good for this network. This network recognition technique allows the Mac to very rapidly discover if it is connected to a known network.
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