No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search


To have a better experience, please upgrade your IE browser.


Configuration Guide - IP Unicast Routing

S7700 and S9700 V200R011C10

This document describes IP Unicast Routing configurations supported by the switch, including the principle and configuration procedures of IP Routing Overview, Static Route, RIP, RIPng, OSPF, OSPFv3, IS-IS(IPv4), IS-IS(IPv6), BGP, Routing Policy ,and PBR, and provides configuration examples.

Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).


IS-IS is a link-state dynamic routing protocol initially designed by the OSI. To support IPv4 routing, IS-IS is applied to IPv4 networks and called Integrated IS-IS.

As IPv6 networks are built, IS-IS also needs to provide accurate routing information for IPv6 packet forwarding. IS-IS has good scalability, supports IPv6 network layer protocols, and is capable of discovering, generating, and forwarding IPv6 routes.

Extended IS-IS for IPv6 is defined in the draft-ietf-isis-ipv6-05 of the IETF. To process and calculate IPv6 routes, IS-IS uses two new TLVs and one network layer protocol identifier (NLPID).

The two TLVs are as follows:

  • TLV 236 (IPv6 Reachability): describes network reachability by defining the route prefix and metric.

  • TLV 232 (IPv6 Interface Address): is similar to the IP Interface Address TLV of IPv4, except that it changes a 32-bit IPv4 address to a 128-bit IPv6 address.

The NLPID is an 8-bit field that identifies the protocol packets of the network layer. The NLPID of IPv6 is 142 (0x8E). If IS-IS supports IPv6, it advertises routing information through the NLPID value.

Updated: 2020-02-04

Document ID: EDOC1000178324

Views: 286835

Downloads: 229

Average rating:
This Document Applies to these Products

Related Version

Related Documents

Previous Next