Configuring Ospf Ipv6

aLab 8-1 Configuring OSPF for IPv6
Learning Objectives • • • • • Configure a static IPv6 address on an interface Change the default-link local address on an interface Configure an EUI-64 IPv6 address on an interface Enable IPv6 routing and CEF Configure and verify single-area OSPFv3 operation

Topology Diagram

Scenario For this lab, you will configure IPv6 addresses on interfaces, bothstatic addresses and EUI-64 addresses. Then, you will configure OSPFv3 to route between the IPv6 networks. Step 1: Lab Preparation Start this lab by clearing out your configurations and reloading your routers. Once your routers are reloaded, set up the appropriate hostnames.

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CCNP: Building Scalable Internetworks v5.0 - Lab 8-1

Copyright © 2006, Cisco Systems, Inc

Step 2:Configuring the Loopback Interfaces Configure the loopback interface on each router with both the IPv4 address and IPv6 address given in the diagram. The IPv4 address is configured the traditional way with ip address address mask. The IPv6 address configuration is similar, using the command ipv6 address address/mask. IPv6 addresses let you put in the mask length with a /mask, rather than typing the wholemask out in hexadecimal (imagine typing up to 128 bits worth of 1’s). You also can put in the abbreviated form of an IPv6 address. IPv6 addresses normally are 8 groups of 16 bit groups of hexadecimal, separated by colons. You can abbreviate any continuous group of 0’s with “::”. You can only use this abbreviation once per address. For example, FEC0:0:0:0:0:0:12:1 /112 can be shortened to FEC0::12:1/112.
R1(config)# interface loopback0 R1(config-if)# ip address 10.1.1.1 255.255.255.0 R1(config-if)# ipv6 address FEC0::1:1/112 R2(config)# interface loopback0 R2(config-if)# ip address 10.1.2.1 255.255.255.0 R2(config-if)# ipv6 address FEC0::2:1/112 R3(config)# interface loopback0 R3(config-if)# ip address 10.1.3.1 255.255.255.0 R3(config-if)# ipv6 address FEC0::3:1/112

If you accidentallyput the wrong IPv6 address on an interface, make sure you take it off with the no version of the command you entered. Unlike IPv4 addresses, where the ip address command overwrites the existing address, multiple IPv6 addresses can exist on an interface. Putting in the command ipv6 address multiple times will add more addresses, not replace them. Also, notice that we put both an IPv4 and IPv6address on the same interface, and neither conflict with each other. This is because they are different layer 3 protocols and they run independently. Step 3: Configuring Static IPv6 Addresses Now, configure the two serial links with IPv6 addresses. Use the ipv6 address address/mask command again to configure the interfaces with the addresses given in the diagram. Remember to set the clockrates whereappropriate and put a no shutdown on the interfaces. Verify with ping for local subnet connectivity.
R1(config)# interface serial0/0/0 R1(config-if)# ipv6 address FEC0::12:1/112 R1(config-if)# clockrate 64000 R1(config-if)# no shutdown R1(config-if)# interface s0/0/1 R1(config-if)# ipv6 address FEC0::13:1/112 R1(config-if)# clockrate 64000

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CCNP: Building Scalable Internetworks v5.0 -Lab 8-1

Copyright © 2006, Cisco Systems, Inc

R1(config-if)# no shutdown R2(config)# interface serial0/0/0 R2(config-if)# ipv6 address FEC0::12:2/112 R2(config-if)# no shutdown R3(config)# interface serial0/0/0 R3(config-if)# ipv6 address FEC0::13:3/112 R3(config-if)# clockrate 64000 R3(config-if)# no shutdown

R1#ping FEC0::12:2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echosto FEC0::12:2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms R1#ping FEC0::13:3 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to FEC0::13:3, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 28/28/28 ms R2#ping FEC0::12:1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to...