ciscoipv6solutionsintegrationco-existence

ciscoipv6solutionsintegrationco-existence内容摘要：

Hardware type, memory size, interfaces, CPU load,… Software version, features enabled, license type,…  Difficult to plete if a set of features is not defined per device’s category for a specific environment IPv6capable definition, knowledge of the environment and applications, design goals 169。 2020 Cisco Sy stems, Inc. All rights reserv ed. Cisco Conf idential Presentation_ID 20 IPv6 Addressing Considerations  Understand the IPv6 addressing model Several IETF related documents (RFC 4291 (3513), 3041, 3056, 3879, 4007, 4193, 4214…) IANA and Registries policies and prefix allocation rules Internal rules  Develop an addressing plan Leverage hierarchical addressing system within work, for route aggregation and consolidation at the core  Address are assigned to interfaces as on IPv4, but interfaces expected to have multiple addresses  Address type, scope and lifetime Unicast, Anycast, Multicast Valid and preferred lifetime – RFC 4192 on Renumbering 169。 2020 Cisco Sy stems, Inc. All rights reserv ed. Cisco Conf idential Presentation_ID 21 Education It is a very important aspect of planning. Knowledgeable staff would make better decisions in planning the deployment. The sooner it is initiated the less expensive and more valuable it is. Many education options:  Formalized training used to trainthetrainer.  Global resources 6Bone( IPv6 Forum ( IPv6 Task Force ( North America ( Europe ( Japan ( 169。 2020 Cisco Sy stems, Inc. All rights reserv ed. Cisco Conf idential Presentation_ID 22 Education (cont.) Many education options:  Reference Projects 6DISS ( 6NET ( Euro6IX ( Moonv6 (  Cisco resources Partner eLearning Connection: Cisco Learning Connection: 169。 2020 Cisco Sy stems, Inc. All rights reserv ed. Cisco Conf idential Presentation_ID 23 Enterprise Deployment 169。 2020 Cisco Sy stems, Inc. All rights reserv ed. Cisco Conf idential Presentation_ID 24 Deployment Scenario for Enterprises Environment Scenario Cisco IOS support WAN IPv6 services available from ISP Dual Stack Yes Dedicated Data Link layers, eg. LL, ATM amp。 FR PVC, dWDM Lambda Dual Stack Yes No IPv6 services from ISP or experimentation – few sites Configured Tunnels Yes No IPv6 services from ISP or experimentation – many sites, any to any munication 6to4 Yes Campus L3 infrastructure – IPv6 capable Dual Stack Yes L3 infrastructure – not IPv6 capable, or sparse IPv6 hosts population ISATAP Yes 169。 2020 Cisco Sy stems, Inc. All rights reserv ed. Cisco Conf idential Presentation_ID 25 Campus IPv6 Deployment Options Dualstack IPv4/IPv6  Requires switching/routing platforms to support hardware based forwarding for IPv4 and IPv6  IPv6 is transparent on L2 switches except for multicast MLD snooping IPv6 management—Tel/SSH/HTTP/SNMP  Requires robust control plane for both IPv4 and IPv6 Variety of routing protocols—The same ones in use today with IPv4  Requires support for IPv6 multicast, QoS, infrastructure security, etc…  IPv4 and IPv6 control planes and data planes must not impact each other (See RST3301) Distribution Layer Access Layer Core Layer Aggregation Layer (DC) IPv6 Server L2/L3 v6Enabled v6 Enabled v6Enabled v6 Enabled IPv6/IPv4 Dual Stack Access Layer (DC) Dual Stack Dual Stack Dual Stack Dual Stack Dual Stack 169。 2020 Cisco Sy stems, Inc. All rights reserv ed. Cisco Conf idential Presentation_ID 26 Campus IPv6 Deployment Options Hybrid Model  Offers IPv6 connectivity via multiple options Dualstack Configured tunnels – L3toL3 ISATAP – HosttoL3  Leverages existing work  Offers natural progression to full dualstack design  May require tunneling to lessthanoptimal layers (. Core layer)  ISATAP creates a flat work (all hosts on same tunnel are peers) Create tunnels per VLAN/sub to keep same segregation as existing design (not clean today)  Provides basic HA of ISATAP tunnels via old AnycastRP idea  ISATAP does not support IPv6 Multicast  Configured tunnels do support IPv6 Multicast Dualstack Server L2/L3 v6Enabled v6 Enabled v6Enabled Not v6 Enabled v6 Enabled Not v6 Enabled Hybrid Model Distribution Layer Access Layer Core Layer Aggregation Layer (DC) ISATAP Tunnel Access Layer (DC) Configured Tunnel Dual Stack Dual Stack 169。 2020 Cisco Sy stems, Inc. All rights reserv ed. Cisco Conf idential Presentation_ID 27 Campus IPv6 Deployment Options IPv6 Service Block – An Interim Approach ISATAP IPv6 Service Block Internet Dedicated FW IOS FW Data Center Block Red VLAN WAN/ISP Block  Provides ability to rapidly。