© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialBSCI 1 IPv6 BSCI Module 8 – Lesson 4&5 IPv6 routing Implementing and Verifying OSPFv3 © 2008 Cisco Systems, Inc. All rights reserved.BSCI 2 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Objectives Describe how OSPF for IPv6 works Explain the similarities and differences between OSPF for IPv6 to OSPFv2 Describe the differences between OSPF LSA types used with IPv4 and IPv6 Explain the configuration modes and Cisco IOS attributes specific to OSPFv3 Explain how to configure OSPFv3 Explain how to verify OSPFv3 © 2008 Cisco Systems, Inc. All rights reserved.BSCI 3 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com IPv6 Routing Protocols © 2008 Cisco Systems, Inc. All rights reserved.BSCI 4 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com IPv6 Routing Protocols IPv6 routing types: –Static –RIPng (RFC 2080) –OSPFv3 (RFC 2740) –IS-IS for IPv6 –MP-BGP4 (RFC 2545/2858) –EIGRP for IPv6 ipv6 unicast-routing command is required to enable IPv6 before any routing protocol configured. © 2008 Cisco Systems, Inc. All rights reserved.BSCI 5 CCNP – BSCI Bachkhoa Networking Academy Static route Configuring Static IPv6 Routes Router(config)#ipv6 route ipv6-prefix/prefix-length {next-hop | interface} [distance] Displaying IPv6 Routes Router#show ipv6 route © 2008 Cisco Systems, Inc. All rights reserved.BSCI 6 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com RIPng Same as IPv4: –Distance-vector, radius of 15 hops, split-horizon, and poison reverse –Based on RIPv2 Updated features for IPv6: –IPv6 prefix, next-hop IPv6 address –Uses the multicast group FF02::9, the all-rip-routers multicast group, as the destination address for RIP updates –Uses IPv6 for transport –Named RIPng © 2008 Cisco Systems, Inc. All rights reserved.BSCI 7 CCNP – BSCI Bachkhoa Networking Academy Configuring RIPng Router(config)#ipv6 router rip tag © 2008 Cisco Systems, Inc. All rights reserved.BSCI 8 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Integrated Intermediate System-to- Intermediate System (IS-IS) Same as for IPv4. Extensions for IPv6: –2 new type-length-values (TLV): •IPv6 reachability (with 128 bits prefix) •IPv6 interface address (with 128 bits) –New protocol identifier –Not yet an IETF standard © 2008 Cisco Systems, Inc. All rights reserved.BSCI 9 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Multiprotocol Border Gateway Protocol (MP-BGP) (RFC 2858) Multiprotocol extensions for BGPv4: –Enables protocols other than IPv4. –New identifier for the address family. IPv6 specific extensions: –Scoped addresses: NEXT_HOP contains a global IPv6 address and potentially a link-local address (only when there is a link-local reachability with the peer). –NEXT_HOP and NLRI (Network Layer Reachability Information) are expressed as IPv6 addresses and prefix in the multiprotocol attritubes. © 2008 Cisco Systems, Inc. All rights reserved.BSCI 10 CCNP – BSCI Bachkhoa Networking Academy IS-IS for IPv6 Large address support facilitates the IPv6 address family. Intermediate System to Intermediate System (IS-IS) is the same as IPv4 with the following extensions added: Two new Type, Length, Value (TLV) attributes IPv6 reachability IPv6 interface address New protocol IDS Not yet an IETF standard Học viện mạng Bách Khoa - www.bkacad.com [...]... –show ipv6 ospf [process-id] database link –show ipv6 ospf [process-id] database prefix BSCI © 2008 Cisco Systems, Inc All rights reserved Học viện mạng Bách Khoa - www.bkacad.com 32 CCNP – BSCI Bachkhoa Networking Academy OSPFv3 Configuration Example Router1# interface S1/1 ipv6 address 2001:410:FFFF:1::1/64 ipv6 ospf 100 area 0 interface S2/0 ipv6 address 3FFE:B00:FFFF:1::2/64 ipv6 ospf 100 area 1 ipv6. .. commands with ipv6 Interfaces configured directly: –Replaces network command “Native” IPv6 router mode: –Not a submode of router ospf command BSCI © 2008 Cisco Systems, Inc All rights reserved Học viện mạng Bách Khoa - www.bkacad.com 27 CCNP – BSCI Bachkhoa Networking Academy IPv6 and OSPFv3 Commands Command Description Router(config) #ipv6 unicastrouting Enables the forwarding of IPv6 unicast datagrams... Updated features for IPv6: –Every IPv4-specific semantic is removed –Carry IPv6 addresses –Link-local addresses used as source IPv6 transport –OSPF for IPv6 is currently an IETF proposed standard BSCI © 2008 Cisco Systems, Inc All rights reserved Học viện mạng Bách Khoa - www.bkacad.com 11 CCNP – BSCI Bachkhoa Networking Academy Implement OSPF for IPv6 Enabling OSPF for IPv6 on an Interface –1... configuration mode Router(config-if) #ipv6 address address/prefix-length [eui-64] Configures an IPv6 address for an interface and enables IPv6 processing on the interface The eui-64 parameter forces the router to complete the addresses’ low-order 64-bits by using an EUI-64 interface ID Router(config-if) #ipv6 ospf process-id area area-id [instance instance-id] Enables OSPF for IPv6 on an interface 4 Router(config-if)#router... terminal –3 interface type number –4 ipv6 ospf authentication ipsec spi spi md5 [keyencryption-type {key | null}] BSCI © 2008 Cisco Systems, Inc All rights reserved 13 CCNP – BSCI Bachkhoa Networking Academy Self Check 1 What global configuration command is used to enable IPv6 before any routing protocol can be configured? 2 How is IPv6 similar to IPv4 classless interdomain routing (CIDR)? 3 How does RIPng... for IPv6 Enabling OSPF for IPv6 on an Interface –1 enable –2 configure terminal –3 interface type number –4 ipv6 ospf process-id area area-id [instance instance-id] Defining an OSPF for IPv6 Area Range –1 enable –2 configure terminal –3 ipv6 router ospf process-id –4 area area-id range ipv6- prefix/prefix-length [advertise | not-advertise] [cost cost] BSCI © 2008 Cisco Systems, Inc All rights reserved... www.bkacad.com 30 CCNP – BSCI Bachkhoa Networking Academy Enabling OSPFv3 on an Interface router(config)# interface Ethernet0/0 router(config-if)# ipv6 address 3FFE:FFFF:1::1/64 router(config-if)# ipv6 ospf 1 area 0 router(config-if)# ipv6 ospf priority 20 router(config-if)# ipv6 ospf cost 20 BSCI © 2008 Cisco Systems, Inc All rights reserved Học viện mạng Bách Khoa - www.bkacad.com 31 CCNP – BSCI Bachkhoa Networking... Enabling OSPFv3 Globally router# router# configure terminal router(config)# ipv6 unicast -routing router(config)# ipv6 router ospf 1 router(config-router)# router-id 2.2.2.2 BSCI © 2008 Cisco Systems, Inc All rights reserved Học viện mạng Bách Khoa - www.bkacad.com 29 CCNP – BSCI Bachkhoa Networking Academy Steps for Enabling IPv6 and OSPFv3 on an Interface Step Command or Action Purpose Router(config)#interface... rights reserved Học viện mạng Bách Khoa - www.bkacad.com 16 CCNP – BSCI Bachkhoa Networking Academy OSPFv3—Similarities with OSPFv2 OSPFv3 is OSPF for IPv6 (RFC 2740): –Based on OSPFv2, with enhancements –Distributes IPv6 prefixes –Runs directly over IPv6 OSPFv3 & v2 can be run concurrently, because each address family has a separate SPF (ships in the night) OSPFv3 uses the same basic packet types... forwarding of IPv6 unicast datagrams Router(config) #ipv6 router ospf process-id Enables an OSPF process on the router The processid parameter identifies a unique OSPFv3 process This command is used on a global basis Example: Enables the OSPFv3 process number 1 on the router Router(config) #ipv6 router ospf 1 Router (config-router)# router-id router-id For an IPv6- only router, a router-id parameter must be . www.bkacad.com IPv6 Routing Protocols © 2008 Cisco Systems, Inc. All rights reserved.BSCI 4 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com IPv6 Routing Protocols IPv6 routing. (RFC 2080) –OSPFv3 (RFC 2740) –IS-IS for IPv6 –MP-BGP4 (RFC 2545/2858) –EIGRP for IPv6 ipv6 unicast -routing command is required to enable IPv6 before any routing protocol configured. © 2008 Cisco. Academy Static route Configuring Static IPv6 Routes Router(config) #ipv6 route ipv6- prefix/prefix-length {next-hop | interface} [distance] Displaying IPv6 Routes Router#show ipv6 route © 2008 Cisco Systems,