文档介绍：1 ? 2001, Cisco Systems, Inc. All rights reserved. ? 2001, Cisco Systems, Inc. All rights reserved. ? 2001, Cisco Systems, Inc. All rights reserved. Cisco IOS IS-IS for IPv6 Patrick Grossetete Cisco Systems Cisco IOS IPv6 Product Manager pgrosset @ cisco .com Presentation_ID ? 2001, Cisco Systems, Inc. All rights reserved. 2 ? 2001, Cisco Systems, Inc. All rights reserved. 2 ? 2001, Cisco Systems, Inc. All rights reserved. 2 Agenda ?? IS-IS standardization IS-IS standardization ? Cisco IOS IS-IS for IPv6 ? Cisco IOS Multi-Topology IS-IS Presentation_ID ? 2001, Cisco Systems, Inc. All rights reserved. 3 ? 2001, Cisco Systems, Inc. All rights reserved. 3 ? 2001, Cisco Systems, Inc. All rights reserved. 3 IPv6 Routing Protocols ? Same “ longest-prefix match ” routing as IPv4 CIDR ? Two Different Classes Link-State (., OSPF, ISIS, etc.) Distance-Vector (., RIP, IGRP, etc.) ? Autonomous System / Routing Domain Interior Gateway Protocols ( IGPs ) ., OSPF v3 , ISIS for IPv6 , RIP ng , E IGRP for IPv6 Exterior Gateway Protocols ( EGPs ) Multi-Protocol Extensions for BGP 4 Presentation_ID ? 2001, Cisco Systems, Inc. All rights reserved. 4 ? 2001, Cisco Systems, Inc. All rights reserved. 4 ? 2001, Cisco Systems, Inc. All rights reserved. 4 IS-IS Standards ? IETF IS-IS for IP s WG http://www. ietf .org// isis - ? ISO 10589 specifies OSI IS-IS routing protocol for CLNS traffic Tag/Length/Value (TLV) options to enhance the protocol A Link State protocol with a 2 level hierarchical architecture. ? RFC 1195 added IP support, also known as Integrated IS-IS (I/IS-IS) I/IS-IS runs on top of the Data Link Layer Requires CLNP to be configured ? Draft RFC defines how to add IPv6 address family support to IS-IS -drafts/draft-ietf-isis-ipv6- ? Draft RFC introduces Multi-Topology concept for IS-IS -drafts/draft-ietf-isis-wg-multi-topology- Presentation_ID ? 2001, Cisco Systems, Inc. All rights reserved. 5 ? 2001, Cisco Sys