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26 Cards in this Set
- Front
- Back
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IPv6: Describe the global unicast address space.
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2000::/3
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IPv6: Describe the unique local unicast address space.
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FD00::/8
function like RFC 1918 IPv4 addresses |
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IPv6: Describe link local unicast address space.
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FE80::/10
Local subnet only; routers will not forward FE80::[EUI-64] |
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IPv6: Describe link local multicast address space.
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FF02::/16
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IPv6: T/F - IPv6 has no concept of classful addressing.
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TRUE
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IPv6: PC1 and PC2 are on the same VLAN. How does PC1 learn PC2's mac address?
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NDP
Network discovery protocol replaces the ARP function. |
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IPv6: Describe how to derive EUI-64 from a MAC address.
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1. Split Mac address into two halves
2. Add FFFE in middle 3. Make seventh bit a binary 1 |
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IPv6: Define a Teredo tunnel
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Teredo tunnel allows a dual-stack host to encapsulate an IPv6 packet inside an IPv4 packet created on the same host.
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IPv6: Describe the 3 parts of a global unicast addresses.
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1. First 48 bits are site prefix.
2. Next 16 bits are subnet number 3. Last 64-bits are host |
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IPv6: How are IPv6 addresses assigned to sites?
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1. ICANN assigns address ranges to regional internet registries (RIR)
2. RIR assigns IPv6 addresses to ISPs 3. ISPs assign to customers 4. Route aggregation at each level. |
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IPv6: Describe two options to assign a static IPv6 address to an interface; include CLI
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1. Assign entire address
2. Static conf first 64 bits w/ EUI-64 CLI: #IPv6 address <address></prefix> [EUI-64] prefix is normally /64 |
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IPv6: Describe two options for dynamic address assignment to a host.
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1. Stateful DHCPv6 server (like IPv4 DHCP)
2. Stateless autoconfiguration (uses DHCP only to find DNS servers) |
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IPv6: Describe the five steps of stateless autoconfiguration for a host.
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1. Determine local link address (FE80::EUI-64)
2. NDP: Send RS (FF02::2) to all routers 3: NDP: receive RA (FF02::1) to learn /64 prefix for subnet 4. Add EUI-64 to prefix 5. Learn DNS servers from stateless DHCP server |
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IPv6: Name the four major types of IPv6 addresses.
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1. Unicast
2. Multicast 3. Anycast (replaces HSRP) 4. Special (loopback or unknown) |
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IPv6: Describe three types of unicast addresses.
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1. Global unicast (2000::/3)
2. Unique local (FD00::/8) - private IPs 3. Link Local FE80::/10 - local to subnet - FE80::<EUI-64> |
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IPv6: Describe 2 types of multicast addresses
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1. FF00::/8 2. Link Local are FF02::/16
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IPv6: Describe the multicast addresses for all nodes, all routers on link
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1. FF02::1 - all nodes on link
2. FF02::2 - all routers on link |
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IPv6: Describe multicast addresses for OSPF, RIP02, EIGRP, DHCP (Relay)
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1. OSPF - FF02::5, FF02::6
2. RIP - FF02::9 3. EIGRP - FF02::A 4. DHCP relay - FF02::1:2 |
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IPv6: Describe loopback and unknown addresses
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1. Loopback is ::1
2: Unknown is :: (all zeros) |
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IPv6: Describe five CLI commands to configure a router
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1. Enable IPv6 routing: #IPv6 unicast-routing
2. Enable routing protocol: #IPv6 router rip 3. Conf interfaces: #IPv6 address <address>/prefix [eui-64] 4. enable routing on interface: #IPv6 rip <name> 5. Enable interface: #ipv6 enable |
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IPv6: What is the CLI command to verify all the IPv6 addresses assigned to a router?
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#show ipv6 interface
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IPv6: Which IPv6/IPv4 interoperability technique routes both IP versions simultaneously?
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dual stack
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IPv6: Describe ISATAP Tunneling
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Intra-site Automatic Tunnel Addressing Protocol
typically used inside an enterprise dynamically created Does not work if IPv4 NAT used between tunnel endpoints |
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IPv6: Describe Dynamic 6to4 tunnels
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Dynamically created
Typically done on IPv4 Internet IPv4 address of tunnel endpoints can be found dynamically based on IPv6 destination address |
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IPv6: Describe Manually Configured Tunnels (MCT)
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Tunnel interfaces are virtual router interfaces
Configuration references IPv4 address used in the IPv4 header that encapsulates the IPv6 packet |
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IPv6: Describe method of translating between IPv4 and IPv6 when one host is IPv4 only
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NAT-PT.
Router knows what IPv6 address to translate to what IPv4 address and vice-versa Similar translation to traditional NAT |
