Chapter 9 - Monitoring and Troubleshooting IPv6 Networks
Review articleOpen access
Sam Brown - No affiliation found
2002/01/01 Simple chapter DOI: 10.1016/B978-192899484-8/50044-4
Publisher SummaryThis chapter highlights the various “show and debug” commands necessary to troubleshoot an Internet Protocol Version 6 (IPv6) network running Cisco routers. New IPv6 commands help determine which interfaces are configured with routing protocols and enable one to review the quantity and makeup of the IPv6 traffic originating or being received by the router. A few commands used to monitor the status of IPv6 border gateway protocols (BGP) are configured interfaces that determine the BGP neighbors and their communication status. These commands provide an insight into Internet control message protocol (ICMP) communications, including the neighbor discovery process, IPv6 routing, and IPv6 BGP routing. A few important aspects of IPv6 are useful to assist in understanding and analyzing IPv6 traffic flows. ICMP packets are used to maintain the neighbor adjacencies and they report when a neighbor is unreachable. By learning the contents and messages used by ICMP to maintain neighbor relationships, a firm grasp on the basis of IPv6 communications is established.
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