Deploying IPv6 in Broadband Access Networks

Chapter 6. Configuring and Troubleshooting IPv6 on Edge Routers

In earlier chapters we discussed several different broadband access technologies deployed in conjunction with IPv6, and covered issues relating to integration as well as solutions and workarounds. This chapter is focused on actual configuration of the SP edge router (ER). As a matter of familiarity and convenience, we base our examples on routers and software from Cisco Systems, Inc. We assume that the Cisco internetwork operating system (Cisco IOS) command line interface (CLI) is familiar to many in our target audience. However, the concepts covered are applicable to other vendor equipment and software that support the IPv6 feature set under consideration. We consider configuration specifics relevant to both upstream and downstream directions of data flow from an SP ER prospective. Upstream means toward the SP core and downstream means toward the SP customer. We would like to reiterate that the focus of this book remains deploying IPv6 in SP broadband access networks. Hence, deployment details, design recommendations, and configuration specifics for SP core networks are beyond the scope of this book and thus are not covered. However, for completeness and to put end-to-end deployment requirements into perspective, we briefly highlight techniques for IPv6 transport over the SP core network. The SP forwards the IPv6 traffic through its Layer3 core in three popular ways: (1) tunneling IPv6 in IPv4, (2) dual-stack networks, ...