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Chapter 13 Internet Protocol Version 6 (IPv6)

Chapter 13 Internet Protocol Version 6 (IPv6). IPv6 vs. IPv4. ► IPv4 offers 2^32 IP address or 4,294,967,296 IP address ► IPv6 offers 2^128 (3.4x10^38) IP address or 340,282,366,920,938,463,463,374,607,431,768,211,456

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Chapter 13 Internet Protocol Version 6 (IPv6)

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  1. Chapter 13Internet ProtocolVersion 6 (IPv6)

  2. IPv6 vs. IPv4 ►IPv4 offers 2^32 IP address or 4,294,967,296 IP address ►IPv6 offers 2^128 (3.4x10^38) IP address or 340,282,366,920,938,463,463,374,607,431,768,211,456 therefore it supplies (6.65x10^23) or 665,570,793,348,866,943,898,599 for each square meter on earth. ►IPv6 has built-in security ►IPv6 uses ICMPv6 or NDP (Neighbors Discovery Protocol) on multicast address of FF02:0:0:0:0:1:FF/104 ►IPv6 DOES NOT USE BROADCAST!

  3. IPv6 Expression Ex1: ►2001:0db8:3c4d:0012:0000:0000:1234:56ab ►http://[2001:0db8:3c4d:0012:0000:0000:1234:56ab]/default.html ►Shortened expression of 2001:0db8:3c4d:0012:0000:0000:1234:56ab is ►2001:db8:3c4d:12:0:0:1234:56ab or ►2001:db8:3c4d:12::1234:56ab Ex2: ►2001:0000:0000:0012:0000:0000:1234:56ab ►2001::12::1234:56ab ►2001::12:0:0:1234:56ab

  4. Address Types ►Unicast (may use load balancing) ►Global unicast addresses ►Link-local addresses ►Unique local addresses ►Multicast ►Anycast

  5. Special Addresses ►0:0:0:0:0:0:0:0 0.0.0.0 ►0:0:0:0:0:0:0:1 127.0.0.1 ►0:0:0:0:0:0:192.168.100.1 IPv4 in mixed IPv4/IPv6 network ►2000::/3 Global unicast ►FC00::/7 Unique local unicast ►FE80::/10 Link local unicast ►FF00::/8 Multicast ►3FFF:FFFF::/32 Reserved for examples and documentation ►2001:0DB8::/32 Reserved for examples and documentation ►2002::/16 6to4 transition system

  6. Configuring Cisco Routers with IPv6 Router(config)#ipv6 unicast-routing Router(config)#int f0/0 Router(config-if)#ipv6 enable {link local address} Router(config-if)#ipv6 address 2001:db8:3c4d:1:0260.d6FF.FE73.1987/64 OR Router(config-if)#ipv6 address 2001:db8:3c4d:1::/64 eui-64 MAC is0060.d673.1987 or 0000 00000110 0000 . 1101 01100111 0011. 0001 10011000 0111

  7. Autoconfiguration Stateless x Stateful Addressing Stateless: Router or stateless DHCP is needed to provide prefix ID of link-local address to the host, otherwise, the default prefix FE80::/64 is used Stateful: Stateful DHCP is required to provide addressing to the hosts.

  8. Configuring DHCP for IPv4 Router(config)#ip dhcp ? excluded-address Prevent DHCP from assigning certain addresses Pool Configure DHCP address pools Relay DHCP relay agent parameters Router(config)#ip dhcp pool Sales_Network Router(dhcp-config)#? default-router Default routers dns-server DNS servers domain-name Domain name Exit Exit from DHCP pool configuration mode netbios-name-server NetBIOS (WINS) name servers Network Network number and mask next-server Next server in boot process Router(dhcp-config)#network 192.168.10.0 255.255.255.0 Router(dhcp-config)#default-router 192.168.10.1 Router(dhcp-config)#exit Router(config)#ip dhcp excluded-address 192.168.10.1

  9. Configuring DHCP for IPv6 or DHCPv6 Router(config)#ipv6 dhcp pool ? WORD DHCP pool name Router(config)#ipv6 dhcp pool test Router(config-dhcp)#? IPv6 DHCP configuration commands: Default Set a command to its defaults dns-server DNS servers domain-name Domain name to complete unqualified host names exit Exit from DHCPv6 configuration mode no Negate a command or set its defaults prefix-delegation IPv6 Prefix delegation Router(config-dhcp)#dns-server ? Hostname or X:X:X:X::X Server’s name or IPv6 address Router(config-dhcp)#domain-name yahoo.com

  10. Router(config-dhcp)#prefix-delegation ? X:X:X:X::X/<0-128> IPv6 x:x::y/<z> aaa Acquire prefix from AAA pool IPv6 prefix pool Router(config-dhcp)#prefix-delegation pool ? WORD IPv6 prefix pool Router(config-dhcp)#prefix-delegation pool test ? lifetime Configure prefix lifetimes <cr> Router(config-dhcp)#prefix-delegation pool test lifetime 3600 3600 For both valid and preferred lifetime is in the range of <60-4294967295> or infinite Router(config)#int fa 0/0 Router(config-if)#ipv6 dhcp server ? WORD Name of IPv6 DHCP pool Router(config-if)#ipv6 dhcp server test

  11. IPv6 Routing Protocols 1- RIPng (FF02::9) Router(config-if)#ipv6 rip 1 enable Router(config-if)#exit Router(config)#ipv6 router rip 1 Router(config-rtr)# 2- EIGRPv6 (FF02::A) Router(config)#ipv6 router eigrp 10 Router(config-rtr)#no shutdown Router(config-rtr)#exit Router(config)#int f0/0 Router(config-if)#ipv6 eigrp 10 3- OSPFv3 (FF02::5 for OSPF routers and FF02::6 for OSPF-designated routers) Router(config)#ipv6 router osfp 10 Router(config-rtr)#router-id 10.1.1.1 Router(config-rtr)#exit Router(config)#int f0/0 Router(config-if)#ipv6 ospf 10 area 0.0.0.0

  12. Viewing IPv6 Routing Protocols Router#show ipv6 route Router#sh ipv6 protocols Router#sh ipv6 rip Router#sh ipv6 ospf neighbor Router#debug ipv6 ospf packet Router#debug ipv6 ospf hello

  13. Migrating to IPv6 1- NAT Protocol Translation (NAT-PT) ►Static IPv6 to IPv4 mapping ►Dynamic IPv6 to IPv4 mapping ►Dynamic (one to many) or Network Address Port Translation (NAPT-PT) 2- Dual Stacking Router(config)#ipv6 unicast-routing Router(config)#interface f0/0 Router(config-if)#ipv6 address 2001:db8:3c4d:1::/64 eui-64 Router(config-if)#ip address 192.168.30.1 255.255.255.0

  14. 3- 6to4 tunneling Router(config-if)#exit Router(config)#int tunnel 0 Router(config-if)#ipv6 address 2001:db8:1:1::1/64 Router(config-if)#tunnel source 192.168.30.1 Router(config-if)#tunnel destination 192.168.40.1 Router(config-if)#tunnel mode ipv6ip

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