3.23 Configure And Verify Eigrp For Ipv6 And Named

Front 1

EIGRP for IPv6 advertises IPv6 prefixes/lengths, rather than IPv4 subnet/mask information

Back 1

EIGRP for IPv6 uses the neighbor’s link-local address as the next-hop IP address; EIGRP forIPv4 has no equivalent concept.

Front 2

encapsulates its messages in IPv6 packets, rather than IPv4 packets

Back 2

EIGRP for IPv6 does not require neighbors to be in the same IPv6 subnet as a requirement tobecome neighbors.

Front 3

IPv4 defaults to use automatic route summarization at the boundaries ofclassfulIPv4 networks

Back 3

IPv6 has no concept ofclassful networks, so EIGRP for IPv6 cannot performany automatic summarization.

Front 4

EIGRP IPV4 Multicast Update Destination

224.0.0.10

Back 4

EIGRP IPV6 Multicast Upfate Destination

FF02::A

Front 5

Configuring EIGRP for IPv6

Step 1. Enable IPv6 routing with the

ipv6 unicast-routing global command.

Back 5

Configuring EIGRP for IPv6

Step 2. Enable EIGRP using the

ipv6 router eigrp {1 – 65535}

global configuration command.

Front 6

Configuring EIGRP for IPv6

Step 3. Enable IPv6 on the interface, typically with one of two methods:

Configure an IPv6 unicast address on each interface, using the

ipv6 address address/prefix-length [eui-64] interface command.

Back 6

Configuring EIGRP for IPv6

Or

Configure the ipv6 enable command, which enables IPv6 and causes the router to deriveits link-local address

Front 7

Configuring EIGRP for IPv6

Step 4. Enable EIGRP on the interface with the ipv6 eigrp asn interface subcommand (where theasn matches the ipv6 router eigrp asn global configuration command).

Back 7

Configuring EIGRP for IPv6

Step 5. Enable EIGRP for IPv6 with a

no shutdown command while in EIGRP configuration mode, if EIGRP is currently disabled

Front 8

Configuring EIGRP for IPv6

Step 6. If no EIGRP router ID has been automatically chosen, because ofnot having at least oneworking interface with an IPv4 address, configure an EIGRP router ID with the router-idrid command in EIGRP configuration mode.

Back 8

Configuration step 1: enabling IPv6routing

ipv6 unicast-routing

Front 9

configuration steps 3 and 4

interface FastEthernet0/0. 1

ipv6 address 2012: : 1/64

ipv6 eigrp 9!

Back 9

steps 2, 5, and 6

ipv6 router eigrp9

no shutdown

router-id10. 10. 34. 3

Front 10

ipv6 unicast-routing

!

ipv6 router eigrp9

no shutdown

router-id10. 10. 34. 3

!

interface FastEthernet0/0. 2

ipv6 address 2017: : 1/64

ipv6 eigrp9

Back 10

show ipv6 route

Front 11

show ipv6 route eigrp

Back 11

show ipv6 protocols

Front 12

show ipv6 eigrp neighbors

Back 12

show ipv6 eigrp topology

Front 13

Named eigrp

Back 13

named eigrp

Front 14

Back 14

Step 1. Configure a Named EIGRP virtual instance using the

router eigrp virtual-instance-name

command in global configuration mode. It is under this single virtual instance that alladdress families are configured.

Front 15

Step 2. Specify an address family along with an autonomous system number using the

address family {ipv4 | ipv6} autonomous-system asn command.

Back 15

Step 3. Configure general EIGRP settings under Address-Family configuration mode. Examplesofcommands issued in this configuration mode include metric, network, eigrp stub, and eigrp router-id.

Front 16

Step 4. (Optional) Enter Address-Family-Interface configuration mode, with the command af-interface {default | interface-id}

default option, commands entered in this configuration mode apply to all interfaces

Back 16

Step 5. (Optional) Exit Address-Family-Interface configuration mode (ifcurrently in that mode)with the exit command, and enter Address-Family-Topology configuration mode with thetopology base command.

Front 17

router eigrp R1DEMOR1

address-family ipv4 autonomous-system 1

network 0.0.0.0

Back 17

router eigrp R1DEMO

!

address-family ipv4 unicast autonomous-system 1

!

af-interface default

hello-interval2

hold-time10

passive interface

exit-af-interface

!

af-interface Serial1/0

no passive

interface

exit-af-interface

!topology base

variance2

exit-af-topology

network0. 0. 0. 0

exit-address-family

!

address-family ipv6 unicast autonomous-system2

!

topology base

exit-af-topology

exit-address-family

Front 18

USES SAME VERIFCATION COMMANDS

Back 18

.

Front 19

A router currently has a complex EIGRPconfiguration, with multiple EIGRP-relatedcommands under various interfaces, in additionto multiple EIGRP commands under routerconfiguration mode. This configuration needsto be simplified so that it becomes easier tounderstand and troubleshoot.

Back 19

Replace the router’s traditional EIGRPconfiguration with a Named EIGRPconfiguration, which consolidates all of arouter’s EIGRP commands under a singlehierarchical structure

Front 20

If the EIGRP configuration on corporaterouters is migrated from a traditionalEIGRP configuration to a Named EIGRPconfiguration, will network technicians andhelp desk staff need to learn a new set ofverification and troubleshooting commands

Back 20

No. Even though Named EIGRP has asignificantly different configuration thana traditional EIGRP configuration, theverification commands (for example, theshow commands) remain the same.

Front 21

Enable IPv6 routing.

Back 21

ipv6 unicast-routing

Front 22

Enable EIGRP for IPv6.

Back 22

ipv6 router eigrp {1 – 65535}

Front 23

Enable IPv6 on an interface, causing a routerto derive a link-local address for the interface

Back 23

ipv6 enable

Front 24

Configure an IPv6 address on an interface.

Back 24

ipv6 address address/prefix-length [eui-64]

Front 25

Enable EIGRP for IPv6 on an interface.

Back 25

ipv6 eigrp asn

Front 26

Configure a router ID for EIGRP for IPv6.

Back 26

eigrp router-id rid

Front 27

Create a Named EIGRP virtual instance

Back 27

router eigrp virtual-instance-name

Front 28

Specify an address family along with anautonomous system number.

Back 28

address-family {ipv4 | ipv6} autonomous systemasn

Front 29

Enter Address-Family-Interface configurationmode

Back 29

af-interface {default | interface-id}

Example

af-interface Serial1/0

Front 30

Enter Address-Family-Topologyconfiguration mode for the base topology

Back 30

topology base

example

topology base

variance2

exit-af-topology

Front 31

Show the variance configured for an EIGRPfor IPv6 autonomous system.

Back 31

show ipv6 protocols

Front 32

Show the Hello Interval for an EIGRP forIPv6 autonomous system.

Back 32

show ipv6 eigrp interfaces detail

Front 33

Display the EIGRP topology table for anEIGRP for IPv6 autonomous system

Back 33

show ipv6 eigrp topology [all-links]

Front 34

Display sent and received updates for anEIGRP for IPv6 autonomous system.

Back 34

debug ipv6 eigrp notifications