IPv6 Routing Flashcards
List the 3 steps required in IPv6 auto-configuration
1) Host sends Router Solicitation to obtain prefix
2) Router answers back with the prefix using Router Advertisement message
3) Host generates an IPv6 address
What type of address and protocol is used to send (router solicitation) RS and RA (router advertisement) messages when auto-configuring an IPv6 address?
Multicast Address FF02::2
Neighbour Discovery Protocol
ICMP 133 (RS)-134 (RA)
In IPv6, MAC addresses are not used to sent frames to hosts on the same subnet - true or false?
True. link-local address are used.
What is the prefix of a link-local address?
FE80::/64
link-local addresses are learned using what?
neighbour solicitation messages and neighbour advertisement messages
on what would you configure an overlay tunnel?
a border router or host that supports both IP4 and IP6
in 6to4 tunnelling, IPv6 packets are encapsulated within IPv4 packets using which protocol type number?
41
What 3 parameters must be configured in a 6to4 tunnel?
1) Tunnel Mode
2) IPv4 Tunnel Source
3) a 6to4 IPv6 address that lies within 2002::/16
in automatic 6to4 tunnelling, which interface is used to specify the tunnel source address?
the ethernet interface
What does ISATAP mean? What does it do?
Intra-Site Automatic Tunnel Addressing Protocol
It allows dual-stack hosts to communicate on an IPv4 network to an IPv6 router.
Which IPv4 routing protocols survived into IPv6?
RIPng, EIGRPv6 and OSPFv3
What are the two differences between RIPv2 and RIPng?
1) RIPng uses a multicast address FF02::9 to share route information where as RIP uses broadcasts
2) Routers keep track of neighbors using the link-local address and not a global address
When would you use Toredo tunnelling?
If an IPv6 host is behind a NAT
Which protocol does IPv6 hosts and routers to discover each other?
Neighbour Discovery Protocol
What is the multi-cast address used in IPv6 by hosts to contact routers and routers to reply in stateless autoconfiguration
FF02::2 and FF02::1
