CCNA ? CCNP Training ? IPv6 Addressing
As a CCNA / CCNP candidate you might be anticipated to comprehend IPv6
Throughout your career as a Cisco system engineer you will need to deal understanding IPv6 target framework.
For your CCNA and CCNP studies you must at some point confront and understand IPv6. Initially it may see rather daunting versus IPv4 that we are all familiar with, in reality IPv6 is very a simply handling protocol when you get past the first surprise. In this essay we intend to check out Neighbour development protocol for level 2 mapping.
When an IPv6 number or router has to send a packet to some other number on the same system it’s going to first explore it really is very own neighborhood neighbour database to get if it has an IPv6 to MAC mapping, if it discovers suitable mapping the number will use it, when there is no mapping the host will have to fix the known layer 3 IPv6 address to an at this time unidentified Layer 2 MAC address and to repeat this the number utilizes the Neighbor Discovery Protocol or NDP to realize the MAC target dynamically.
The giving host uses a multicast message called a Neighbor Solicitation (NS) icmp message to inquire of the obtaining host for this’s MAC address, the receiving host will reply with a Neighbor ad (NA) icmp message unicast inturn with all the requested MAC address.
Just how IPv6 achieves it is all-in the building regarding the Neighbor Solicitation message helping to make using an unique IPv6 destination target called a “Solicited Node Multicast”, this solicited Node Multicast at any given minute represented all the IPv6 hosts from the website link, the past 24 items of the Solicited Node Address are the last 24 items of the IPv6 address of device that a host is asking for the MAC from.
The IPv6 multicast destination target is FF02::1:FF:0/104 the ultimate 24 bits comprise of the last 24 components of the IPv6 address to which the message is being sent to. For example if a bunch desired to uncover the MAC address of an IPv6 host addressed as 2222:3333:4444:5555:6666:AAAA:BBBB:CCCC:DDDD/64 then your solicited Node Address will appear just like the after FF02::1:FF:CC:DDDD/104
Whenever a sending hosts desires to obtain the MAC address from IPv6 host of 2222:3333:4444:5555:6666:AAAA:BBBB:CCCC:DDDD/64 it may need the past 24 components of the understood IPv6 address and place all of them in to the remaining 24 components of the Solicited Node Address and because all IPv6 hosts listen to their very own Solicited Node addresses, when they hear their particular address they’re going to respond aided by the MAC address.
Joe Spoto is a senior lecturer at Commsupport companies CCNA education
in britain. Joe shows Cisco CCNA, CCNP, CCVP courses when he is certainly not from the street rectifying and building sites, if you’d like to learn more about everything we do at Commsupport please check us out at CCNA program
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