Chapter 13 Internet Protocol Version 6 (IPv6)

►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! IPv6 vs. IPv4

IPv6 Expression Ex1: ►2001:0db8:3c4d:0012:0000:0000:1234:56ab ► ►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

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

Special Addresses ►0:0:0:0:0:0:0: ►0:0:0:0:0:0:0: ►0:0:0:0:0:0: IPv4 in mixed IPv4/IPv6 network ►2000::/3Global unicast ►FC00::/7Unique local unicast ►FE80::/10Link local unicast ►FF00::/8Multicast ►3FFF:FFFF::/32Reserved for examples and documentation ►2001:0DB8::/32Reserved for examples and documentation ►2002::/166to4 transition system

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.FE /64 OR Router(config-if)#ipv6 address 2001:db8:3c4d:1::/64 eui-64 MAC is 0060.d or

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.

Configuring DHCP for IPv4 Router(config)#ip dhcp ? excluded-addressPrevent DHCP from assigning certain addresses PoolConfigure DHCP address pools RelayDHCP relay agent parameters Router(config)#ip dhcp pool Sales_Network Router(dhcp-config)#? default-routerDefault routers dns-serverDNS servers domain-nameDomain name ExitExit from DHCP pool configuration mode netbios-name-serverNetBIOS (WINS) name servers NetworkNetwork number and mask next-serverNext server in boot process Router(dhcp-config)#network Router(dhcp-config)#default-router Router(dhcp-config)#exit Router(config)#ip dhcp excluded-address

Configuring DHCP for IPv6 or DHCPv6 Router(config)#ipv6 dhcp pool ? WORDDHCP pool name Router(config)#ipv6 dhcp pool test Router(config-dhcp)#? IPv6 DHCP configuration commands: DefaultSet a command to its defaults dns-serverDNS servers domain-nameDomain name to complete unqualified host names exitExit from DHCPv6 configuration mode noNegate a command or set its defaults prefix-delegation IPv6 Prefix delegation Router(config-dhcp)#dns-server ? Hostname or X:X:X:X::XServer’s name or IPv6 address Router(config-dhcp)#domain-name yahoo.com

Router(config-dhcp)#prefix-delegation ? X:X:X:X::X/ IPv6 x:x::y/ aaaAcquire prefix from AAA poolIPv6 prefix pool Router(config-dhcp)#prefix-delegation pool ? WORDIPv6 prefix pool Router(config-dhcp)#prefix-delegation pool test ? lifetimeConfigure prefix lifetimes Router(config-dhcp)#prefix-delegation pool test lifetime For both valid and preferred lifetime is in the range of or infinite Router(config)#int fa 0/0 Router(config-if)#ipv6 dhcp server ? WORDName of IPv6 DHCP pool Router(config-if)#ipv6 dhcp server test

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 OSPFv3 (FF02::5 for OSPF routers and FF02::6 for OSPF-designated routers) Router(config)#ipv6 router osfp 10 Router(config-rtr)#router-id Router(config-rtr)#exit Router(config)#int f0/0 Router(config-if)#ipv6 ospf 10 area

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

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

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 Router(config-if)#tunnel destination Router(config-if)#tunnel mode ipv6ip