3.1.b (vi) DHCP Protocol Operations DHCPv6 has some different protocol messages and sequences. here is the process of how a IPv6 host gets a DHCPv6 address from a Cisco router: 1. Client sends DHCPv6 Solicit 2. Router sends a DHCPv6 advertise 3. Client sends a DHCPv6 request 4. Router sends a DHCPv6 reply These messages …
Category Archives: CCIE R&S
3.1.b (v) Global Prefix Configuration Feature
3.1.b (v) Global Prefix Configuration Feature The goal of this function is to simplify network renumbering and lets you automatically configure prefixes on interfaces. EN conf t ipv6 general-prefix myglobalprefix 2000:1:1::/48 int lo1 ipv6 address myglobalprefix 0:0:0:1::1/64 int lo2 ipv6 address myglobalprefix 0:0:0:2::1/64 Now you can change the global prefix for both via 1 command: …
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3.1.b (iv) Autoconfig/SLAAC, temporary addresses (RFC4941)
3.1.b (iv) Autoconfig/SLAAC, temporary adresses (RFC4941) IPv6 Stateless Address Autoconfiguration (SLAAC) Utilizes 2 ICMPv6 messages to communicate the prefix to clients: Router solicitation Router advertisement note: Review the 3.1.b (iii) for a more indepth look at these messages These basically allow our host to communicate to the router and then learn the global ipv6 …
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3.1.b (iii) ND, RS/RA
3.1.b (iii) ND, RS/RA IPv6 address resolution. In IPv4 we had arp, to facilitate layer 2 communication. In IPv6 we have ICMPv6 neighbor discovery (ND). The neighbor discovery protocol has two purposes: 1. For discovering and tracking other IPv6 hosts 2. For automatic address configuration ND uses 5 ICMPv6 messages. neighbor solicitation neighbor advertisement router …
3.1.b (ii) EUI-64
3.1.b (ii) EUI-64 EUI-64 stands for Extended Unique Identifier, it is a way for an IPv6 host to automatically assign itself an IPv6 address via using it’s mac address. EUI-64 allows us to configure the interface id part of an IPv6 address (last 64 bits) EUI-64 requires that the network part of the address …
3.1.b Identify, and troubleshoot IPv6 Addressing and Subnetting
3.1.b Identify, and troubleshoot IPv6 Addressing and Subnetting IPv6 Review: The main RFC is 2460 How many addresses do we have with IPv6? 2(128th power) IPv6 is written as hexadecimal, they are separated by colons, and each field is 16 bits in size. Thus each character in HEX = 4 bits What are the …
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