show ipv6 route ospfĬodes: C - Connected, L - Local, S - Static, R - RIP, B - BGP In order to verify the OSPF has been configured properly, use the show ipv6 route ospf command in routers R1 and R3. Use this section to confirm that your configuration works properly. !- Associates the Interface serial0/0 to area 0. !- Associates the Interface loopback20 to area 2. !- Enables OSPFv3 on the interface and associates the interface looback10 to area 1. !- Assigned a IPv6 unicast address in EUI-64 format. Here is a link to a video (available on Cisco Support Community) that demonstrates the key difference between the IPv6 Link-Local Address and global unicast address in Cisco IOS routers: However, router R2 being directly connected to R1 and R3 can communicate with both the routers using their link-local address, because link-local addresses are used only within that local network specific to the physical interface. The routers R1 and R3 can ping each other with the IPv6 global unicast address, but not with their link-local address. This example uses the ping command to demonstrate the connectivity between the routers using link-local addresses. Loopback addresses are configured on the routers R1 and R3, and the routers use OSPFv3 to communicate with each other.
#IPV6 LOOPBACK ADDRESS SERIAL#
In this example, the routers R1, R2 and R3 are connected via serial interface and have the IPv6 addresses configured as mentioned in the network diagram. Refer to Cisco Technical Tips Conventions for more information on document conventions.
#IPV6 LOOPBACK ADDRESS SOFTWARE#
The configurations in this document are based on the Cisco 3700 series router with Cisco IOS® Software Release 12.4 (15)T1.
This document is not restricted to specific software and hardware versions. Prerequisites RequirementsĮnsure that you have knowledge of IPv6 Address Formats before you attempt this configuration. All IPv6 enabled interfaces have a link-local unicast address. IPv6 routers must not forward packets that have link-local source or destination addresses to other links. Routers will not forward datagram using link-local addresses. The nodes do not need a globally unique address to communicate. Link-local addresses can be used to reach the neighboring nodes attached to the same link. These addresses refer only to a particular physical link and are used for addressing on a single link for purposes such as automatic address configuration and neighbor discovery protocol. Link-local addresses can also be manually configured in the FE80::/10 format using the ipv6 address link-local command.
#IPV6 LOOPBACK ADDRESS MAC#
Link-local addresses are not necessarily bound to the MAC address (configured in a EUI-64 format). A link-local address is an IPv6 unicast address that can be automatically configured on any interface using the link-local prefix FE80::/10 (1111 1110 10) and the interface identifier in the modified EUI-64 format. The purpose of this document is to provide an understanding of IPv6 Link-local address in a network.
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