Users Guide

Supported
Releases
10.2.0E or later
show ipv6 interface brief
Displays IPv6 interface information.
Syntax
show ipv6 interface brief
Parameters
brief — Displays a brief summary of IPv6 interface information.
Defaults None
Command Mode EXEC
Usage
Information
Use the do show ipv6 interface brief command to view IPv6 interface information in other
modes.
Example (Brief)
OS10# show ipv6 interface brief
Interface admin/ IPV6 Address/ IPv6 Oper
Name protocol Link-Local Address Status
============================================================
Management 1/1/1 up/up fe80::20c:29ff:fe54:c852/64 Enabled
Vlan 1 up/up fe80::20c:29ff:fe54:c8bc/64 Enabled
Ethernet 1/1/2 up/up fe80::20c:29ff:fe54:c853/64
100::1/64
1001:1:1:1:20c:29ff:fe54:c853/64 Enabled
Ethernet 1/1/3 up/up fe80::4/64
3000::1/64
4000::1/64 Disabled
Ethernet 1/1/4 up/up fe80::4/64
4::1/64
5::1/64 Enabled
Supported
Releases
10.2.0E or later or later
Open shortest path first
OSPF routing is a link-state routing protocol that allows sending link-state advertisements (LSAs) to all other routers within
the same autonomous system (AS) area. OSPF LSAs include information about attached interfaces, metrics used, and other
attributes. OSPF routers accumulate link-state information, and use the shortest path first (SPF) algorithm to calculate the
shortest path to each node.
Autonomous system areas
OSPF operates in a hierarchy. The largest entity within the hierarchy is the autonomous system (AS). The AS is a collection of
networks under a common administration that share a common routing strategy. OSPF is an intra-AS, Interior Gateway Routing
Protocol (IGRP) that receives routes from and sends routes to other AS.
You can divide an AS into several areas, which are groups of contiguous networks and attached hosts administratively grouped.
Routers with multiple interfaces can participate in multiple areas. These routers, called area border routers (ABRs), maintain
separate databases for each area. Areas are a logical grouping of OSPF routers that an integer or dotted-decimal number
identifies.
Areas allow you to further organize routers within the AS with one or more areas within the AS. Areas allow subnetworks to hide
within the AS—minimizing the size of the routing tables on all routers. An area within the AS may not see the details of another
area’s topology. An area number or the router’s IP address identifies AS areas.
732
Layer 3