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63 Cards in this Set
- Front
- Back
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Two rules for shortening IPv6 addresses
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- omit the leading 0's in any given quartet
- represent 1 or more consecutive quartets of all hex 0s with a double colon, but only once in an address |
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Rules for writing IPv6 prefixes?
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Write up to the last quartet that isn't all 0's. Finish the entire quartet, even if the last digits are 0's. Show a double colon and then the slash and the number
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What IPv6 prefix defines the addresses used as global unicast addresses
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2000::/3
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Class A range of private IPv4 addresses
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10.0.0.0 to 10.255.255.255
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Class B range of private IPv4 addresses
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172.16.0.0 to 172.31.255.255
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Class C range of private IPv4 addresses
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192.168.0.0 to 192.168.255.255
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How many private class A networks are there? What are their network numbers?
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1
10.0.0.0 |
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How many private class B networks are there? What are their network numbers?
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16
172.16.0.0 to 172.31.0.0 |
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How many private class C networks are there? What are their network numbers?
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256
192.168.0.0 to 192.168.255.0 |
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Registry prefix is assigned by / to
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ICANN to an RIR
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ISP prefix is assigned by / to
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RIR to an ISP
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Site prefix is assigned by / to
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ISP to a customer (site)
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Subnet prefix is assigned by / to
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enterprise engineer to a particular link
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How long is the site prefix
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48 bits
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How long is the Interface ID
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64 bits
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How does the MAC address turn into the Interface ID
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It is broken in half and FFFE is inserted in the middle
The 7th bit (from l to right) of the 1st half, is turned to a 1 |
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What prefix do IPv6 multicasts have?
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FF00::/8
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If you use the eui-64 keyword with the ipv6 address command, how long of a prefix should you provide?
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64-bit
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How does EUI-64 work on interfaces which don't have a MAC address
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They use the address of some ethernet interface on the router
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NDP
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Neighbor Discovery Protocol
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NDP is part of what larger protocol?
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IPv6
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What part of IPv6 performs the function that ARP performed for IPv4
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NDP
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Two main NDP messages
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RA (router advertisement)
AND RS (router solicitation) |
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What does the multicast FF02::2 mean
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All routers on this link
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What does the multicast FF02::1 mean
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All IPv6 nodes on this link
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NDP is {enabled | disabled} by default
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enabled
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T/F: stateless DHCP is usually used in combination with stateless autoconfiguration
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TRUE
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stateless autoconfiguration allows you to learn what
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IPv6 address, prefix, default router IP address
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T/F: Stateless autoconfiguration uses NDP RS/RA messages
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TRUE
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What piece of information cannot be learned through statless autoconfiguration
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DNS IP and domain name
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Unique local addresses have what prefix
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FD00::/8
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Three categories of IPv6 unicast addresses
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global unicast, unique local, link local
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T/F: Packets from link local addresses are never forwarded to other subnets
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TRUE
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What type of address would be the source IPv6 address in the RS message
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link local
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Link local addresses have what prefix
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FE80::/10
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What is the format of the link local address
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First ten bits of FE80, 54 zeros, and the EUI-64 formatted interface ID
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All multicast addresses that should stay on a local link have what prefix length?
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/16
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OSPF multicast messages use what IPv6 address
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FF02::5
FF02::6 |
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RIP-2 multicast messages use what IPv6 address
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FF02::9
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IPv6 replaces the broadcast with the ________
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anycast
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What type of address do routers normally use as their next-hop IP address in IPv6 routes
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link local
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What is the IPv4 loopback address
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127.0.0.1
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What do DHCP relay agents use as their IPv6 multicast address
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FF02::1:2 /16
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What does an IPv6 DHCP relay agent do
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forwards to the DHCP server
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What is the unknown address and what is it for
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it's ::, meaning all 0s, and it can be used when hosts send packets in an effort to discover their IP addresses
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RFC for RIPng
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2080
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RFC for OSPFv3
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2740
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RFC for MP-BGP4
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2545/4760
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Version of EIGRP that works with IPv6
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EIGRP for IPv6
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T/F: To enable IPv6 routing on an interface, use the network command with the IPv6 connected network
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FALSE
IPv6 does not use the network command |
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Global configuration command to enable IPv6 routing
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ipv6 unicast-routing
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how to enable an RIPng on an interface
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ipv6 rip name enable
name is whatever is put in the ipv6 router rip name global configuration command that's used to start RIPng |
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command to show the IPv6 routing table
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show ipv6 route
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T/F: the name given in the ipv6 router rip name command must be the same on all routers in an AS
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FALSE
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T/F: the commands used to configure static names or refer to a DNS server, are the same in IPv6 as in IPv4
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TRUE
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MCT
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Manually Configured Tunnel
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ISATAP
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Intra-site Automatic Tunnel Addressing Protocol
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How does Teredo tunnelling work
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Allows two dual-stack hosts to create a tunnel to eachother using a tunnel through the IPv4 network/internet
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NAT-PT
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Network Address Translation - Protocol Translation
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RFC for NAT-PT
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2766
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Difference between ISATAP and 6to4 tunneling
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ISATAP does not support IPv4 NAT (are there other differences?)
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What address are RS messages sent and what set of hosts do they identify?
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FF02::2
All routers on this link |
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What addresses are RA messages sent and what set of hosts do they identify?
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FF02::1
All IPv6 nodes on this link |
