#REASON FOR MAC ADDRESSES AND IP DRIVERS#
#REASON FOR MAC ADDRESSES AND IP SOFTWARE#
#REASON FOR MAC ADDRESSES AND IP PLUS#

This problem is all too common, and I’ve actually had it a few times myself. Is there anything I can do to fix this situation? I need the router, since I have multiple computers in my home. Also what happens if some of your switches are IPX and others are v4, or IPX+v4? Which modes can you use? How would your hosts discover that? And how much worse does it get if you want to support additional 元 protocols?Īll of this is introducing complexity rather than removing it.My Internet service went down, and my ISP told me it’s because I’m using a router. Of course there would be switches that handled multiple protocols, but not necessarily all of the ones you want to run, so you'd perhaps have switches that were dual stack IPX+v4 but needed v6 to be mapped to one or the other.

#REASON FOR MAC ADDRESSES AND IP PLUS#

And v6 would need to be able to work on both IPX-native switches and v4-native switches, plus both v4 and IPX would need to be able to run on v6-native switches.

But IPX would also need a mode that maps it to v4-addresses-as-MACs so that it can run on networks that use v4-native switches. The mode would of course need to interoperate with existing IPX nodes that are talking real IPX, so don't forget to make sure that works. IPv4 would need a mode which mapped IPv4 addresses to IPX addresses so they could be handled by the physical network. One likely result is that any new 元 protocol would have to be implemented by inventing fake addresses in whatever 元 protocol is supported by the network, and then using those addresses as. Also, switches would need to support multiple 元 protocols which would substantially complicate them.

#REASON FOR MAC ADDRESSES AND IP DRIVERS#

It's hard enough as it is to deploy a new 元 protocol without also requiring the replacement of all switches, rewriting of NIC drivers etc. The advantage is that it lets you have multiple 元 protocols. within local subnet) to also go via a security device giving you true east/west inspection capabilities which is very difficult to achieve with traditional networking. This can make for some interesting security challenges, but also some advantages, as you can specifically force inter-subnet traffic to go via a security device (such as a firewall) as if it was traditional routing, but what you can also do is force intra-subnet traffic (i.e. You don't have multiple routes, you fire everything at the SDN switch and it works it all out for you, essentially, everything is adjacent like they're on a local subnet. Machines in different subnets can talk directly to ones in other subnets (in a default config) without having to go via a router. This is why inter-subnet 'routing' in Azure is strange at first glance. It also means that traditional subnetting isn t required, as things like subnets are only really to reduce broadcast domains. It does mean that traditional 'tricks' such as VRRP/HSRP and ProxyArp no longer work as these rely on broadcasts. There are no broadcasts in Azure, as the networking plane already knows where each IP is located because IPs are assigned at the hypervisor layer instead of inside the guest OS.

#REASON FOR MAC ADDRESSES AND IP SOFTWARE#

This is pretty much how Software Defined Network (SDN) in Azure works.

Reason for mac addresses and ip