DHCP In IPV6 DHCP is a network admin’s best friend. It’s one of the most useful protocols around, and it’s a major part of IPv6. It’s so major that we have two kinds of DHCP in IPv6 – stateful and stateless.   Stateful DHCP works a lot like the DHCP you and I have come to

NDP allows an IPv6 host to dynamically discover its neighbors,  but the process of discovering neighboring routers is slightly different than that of discovering other hosts. (good for exam) The router discovery process begins with the host multicasting(sending out) what we call a Router Solicitation message (RS) on its local link. What’s the destination for

A “The name is the recipe” address if ever there was one, packets sent to a link-local address never leave the local link. I mean that a router will not forward them. They can’t forward them actually so these packets that go to a linked local address they literally can not leave, since a router

The 128-bit addresses used in IPV6 give us a tremendous number of addresses (since we were running out of routable addresses) and is designed specifically with route summarization in mind. Quick note about route summarization : You that you can take certain routes (maybe eight routes), write them in binary (because that’s what always comes

You’ll often hear port address translation referred to as ‘overloading’. We are overloading a single routable address. PAT allows the private IP addresses of inside hosts ( note that we are talking about multiple hosts) to be translated to a single routable address. So we only need one address instead of multiples and even better

So now we can actually start on our static nat config (with static Nat, there’s one command !  but with dynamic NAT we end up doing an ACL to identify the inside devices that can have their addresses translated) With static nat the only command we’re dealing with really is “creating the static mapping”. And

Time based ACLs are great, but if the routers involved aren’t keeping the same time and calendar (don’t have a synchronized time and don’t have synchronized dates) , the ACLs are unlikely to work as we had planned. So that’s a small problem that can come in and there are some bigger problems too. It’s