Configuring EIGRP for IPv6
The basal accomplish adapted to configure IPv6 EIGRP are absolutely agnate to those for IPv4 EIGRP, with
several additions:
Step 1 Enable IPv6 unicast routing.
Step 2 Configure EIGRP on at atomic one router interface.
Step 3 In the EIGRP acquisition process, accredit a router ID.
Step 4 Affair the no abeyance command in the EIGRP acquisition action to activate
the protocol.
Step 5 Use the accordant appearance commands to analysis your configuration.
Next, let’s attending at a agreement archetype that includes IPv6 EIGRP acquisition amid two routers
connected beyond a Frame Relay cloud. Figure 20-6 shows the cartography for this example; Example
20-13 covers the agreement details. Features acclimatized in this archetype accommodate passive
interfaces and redistribution. Archetype 20-13 is commented abundantly to advice you understand
each affection actuality implemented. After the antecedent example, Archetype 20-13 adds route
summarization to appearance its aftereffect on the acquisition tables.
Figure 20-6 Cartography for Basal OSPFv3 Acquisition Agreement Archetype 20-13
Frame
Relay
EIGRP AS 100
Fa0/0
2001:0:4::/64
Lo3 (Passive)
3001:0:4:3::/64
3001:0:4:5::/64
Lo2
3001:04:2::/64
3001:0:4:4::/64
Lo0
3001:0:4::/64
Lo1
Autoconfig
Lo0
3001:0:3::/64
Fa0/0
2001:0:3::/64
Lo2 (Passive)
3001:0:3:2::/64
Lo3 (Redistributed)
3001:0:3:3::/64
Se0/0
2001::/64
Collins
Heath
DLCI 708
DLCI 807
Se0/0
2001::/64
EIGRP for IPv6 783
Example 20-13 IPv6 EIGRP Acquisition Archetype Amid Collins and Heath
! After basal IPv6 agreement and EIGRP agreement on the
! adapted interfaces, here’s the abject configuration:
Collins# appearance run
!
ipv6 unicast-routing
!
interface Loopback0
no ip address
ipv6 abode 3001:0:4::/64 eui-64
ipv6 eigrp 100
!
interface Loopback1
no ip address
ipv6 abode autoconfig
ipv6 eigrp 100
!
interface Loopback2
no ip address
ipv6 abode 3001:0:4:2::/64 eui-64
ipv6 abode 3001:0:4:4::/64 eui-64
ipv6 eigrp 100
!
interface Loopback3
no ip address
ipv6 abode 3001:0:4:3::/64 eui-64
ipv6 abode 3001:0:4:5::/64 eui-64
ipv6 eigrp 100
!
interface FastEthernet0/0
no ip address
speed 100
full-duplex
ipv6 abode 2001:0:4::/64 eui-64
ipv6 eigrp 100
!
interface Serial0/0
bandwidth 768
no ip address
encapsulation frame-relay
ipv6 abode 2001::/64 eui-64
ipv6 eigrp 100
clock amount 128000
no fair-queue
cdp enable
frame-relay map ipv6 FE80::207:85FF:FE80:7208 708 broadcast
frame-relay map ipv6 2001::207:85FF:FE80:7208 708
! Note that Inverse ARP additionally would assignment here, back it is enabled by default.
continues
784 Chapter 20: IP Version 6
!
! Now, in IPv6 EIGRP agreement mode, set the router ID, configure a
! acquiescent interface, and affair a no abeyance on the acquisition action to begin
! EIGRP acquisition on Collins:
ipv6 router eigrp 100
router-id 192.10.10.101
no shutdown
passive-interface Loopback3
!
! Already this is done, beam the after-effects by examination the IPv6 protocols running
! on Collins. Note the absence metrics, which are the aforementioned as for IPv4 EIGRP, and
! how the Loopback 3 passive-interface agreement is indicated:
Collins# appearance ipv6 protocols
IPv6 Acquisition Agreement is "connected"
IPv6 Acquisition Agreement is "static"
IPv6 Acquisition Agreement is "eigrp 100"
EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
EIGRP best hopcount 100
EIGRP best metric about-face 1
Interfaces:
FastEthernet0/0
Serial0/0
Loopback0
Loopback1
Loopback2
Loopback3 (passive)
Redistribution:
None
Maximum path: 16
Distance: centralized 90 alien 170
Collins#
! Now about-face to Heath and analysis the basal EIGRP interface commands.
Heath# appearance run
! (output bare for brevity)
ipv6 unicast-routing
!
interface Loopback0
no ip address
ipv6 abode 3001:0:3::/64 eui-64
ipv6 eigrp 100
!
! Note that EIGRP is not configured on Loopback 2 or Loopback 3:
interface Loopback2
no ip address
ipv6 abode 3001:0:3:2::/64 eui-64
!
interface Loopback3
Example 20-13 IPv6 EIGRP Acquisition Archetype Amid Collins and Heath (Continued)
EIGRP for IPv6 785
no ip address
ipv6 abode 3001:0:3:3::/64 eui-64
!
interface FastEthernet0/0
no ip address
speed auto
ipv6 abode 2001:0:3::/64 eui-64
ipv6 eigrp 100
!
interface Serial0/0
bandwidth 128
no ip address
encapsulation frame-relay
ipv6 abode 2001::/64 eui-64
ipv6 eigrp 100
clock amount 128000
no fair-queue
cdp enable
frame-relay map ipv6 2001::207:85FF:FE80:71B8 807
frame-relay map ipv6 FE80::207:85FF:FE80:71B8 807 broadcast
!
! Next, configure the IPv6 EIGRP acquisition action and add a avenue map to
! baddest which affiliated interface to redistribute into EIGRP on Heath:
Heath(config)# ipv6 router eigrp 100
Heath(config-rtr)# router-id 192.10.10.1
Heath(config-rtr)# no shutdown
Heath(config-rtr)# passive-interface Loopback2
Heath(config-rtr)# redistribute affiliated metric 100000 100 255 10 1500
route-map Con2EIGRP100
Heath(config-rtr)# exit
Heath(config)# route-map Con2EIGRP100 admittance 10
Heath(config-route-map)# bout interface Loopback3
Heath(config-route-map)# end
Heath#
! The adapted appearance command provides a acceptable high-level appearance of Heath’s EIGRP
! settings:
Heath# appearance ipv6 protocols
IPv6 Acquisition Agreement is "connected"
IPv6 Acquisition Agreement is "static"
IPv6 Acquisition Agreement is "eigrp 100"
EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
EIGRP best hopcount 100
EIGRP best metric about-face 1
Interfaces:
FastEthernet0/0
Serial0/0
Loopback0
Example 20-13 IPv6 EIGRP Acquisition Archetype Amid Collins and Heath (Continued)
continues
786 Chapter 20: IP Version 6
Loopback2 (passive)
Redistribution:
Redistributing agreement affiliated with metric 0 route-map Con2EIGRP100
Maximum path: 16
Distance: centralized 90 alien 170
Heath#
! On Collins, appearance commands affectation EIGRP neighbors and interfaces now that both
! neighbors are configured and up:
Collins# appearance ipv6 eigrp neighbor
IPv6-EIGRP neighbors for action 100
H Abode Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 Link-local address: Se0/0 163 00:01:16 76 456 0 12
FE80::207:85FF:FE80:7208
Collins# appearance ipv6 eigrp interface
IPv6-EIGRP interfaces for action 100
Xmit Queue Mean Pacing Time Multicast Pending
Interface Peers Un/Reliable SRTT Un/Reliable Flow Timer Routes
Fa0/0 0 0/0 0 0/10 0 0
Se0/0 1 0/0 76 1/31 50 0
Lo0 0 0/0 0 0/10 0 0
Lo1 0 0/0 0 0/10 0 0
Lo2 0 0/0 0 0/10 0 0
! The acquisition table on Collins shows that we’re acquirements four routes from Heath.
! Two are centralized routes and one is Heath’s redistributed loopback (EX).
! Note the altered authoritative distances and metrics:
Collins# appearance ipv6 avenue eigrp
IPv6 Acquisition Table - 19 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
U - Per-user Static route
I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary
O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
D - EIGRP, EX - EIGRP external
D 2001:0:3::/64 [90/3847680]
via FE80::207:85FF:FE80:7208, Serial0/0
D 3001:0:3::/64 [90/3973120]
via FE80::207:85FF:FE80:7208, Serial0/0
D 3001:0:3:2::/64 [90/3973120]
via FE80::207:85FF:FE80:7208, Serial0/0
EX 3001:0:3:3::/64 [170/3870720]
via FE80::207:85FF:FE80:7208, Serial0/0
Collins#
! On Heath, the acquisition table is added extensive:
Heath# appearance ipv6 avenue eigrp
IPv6 Acquisition Table - 18 entries
Example 20-13 IPv6 EIGRP Acquisition Archetype Amid Collins and Heath (Continued)
EIGRP for IPv6 787
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
U - Per-user Static route
I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary
O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
D - EIGRP, EX - EIGRP external
D 2001:0:4::/64 [90/20514560]
via FE80::207:85FF:FE80:71B8, Serial0/0
D 3001:0:4::/64 [90/20640000]
via FE80::207:85FF:FE80:71B8, Serial0/0
D 3001:0:4:2::/64 [90/20640000]
via FE80::207:85FF:FE80:71B8, Serial0/0
D 3001:0:4:3::/64 [90/20640000]
via FE80::207:85FF:FE80:71B8, Serial0/0
D 3001:0:4:4::/64 [90/20640000]
via FE80::207:85FF:FE80:71B8, Serial0/0
D 3001:0:4:5::/64 [90/20640000]
via FE80::207:85FF:FE80:71B8, Serial0/0
Heath#
! Verify reachability to the networks application ping. Only one ping analysis is shown
! for brevity, but hosts on all prefixes in the acquisition table are reachable.
Heath# ping 3001:0:4:5:207:85FF:FE80:71B8
Type escape arrangement to abort.
Sending 5, 100-byte ICMP Echos to 3001:0:4:5:207:85FF:FE80:71B8,
timeout is 2 seconds:
!!!!!
Success amount is 100 percent (5/5), round-trip min/avg/max = 28/29/32 ms
Heath#
! Now summarizing the two loopback addresses into one arbitrary avenue on
! Collins’s Serial 0/0 interface:
Collins# conf term
Enter agreement commands, one per line. End with CNTL/Z.
Collins(config)# int s0/0
Collins(config-if)# ipv summary-address eigrp 100 3001:0:4:4::/63
Collins(config-if)# end
Collins# appearance ipv6 protocols
IPv6 Acquisition Agreement is "connected"
IPv6 Acquisition Agreement is "static"
IPv6 Acquisition Agreement is "eigrp 100"
EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
EIGRP best hopcount 100
EIGRP best metric about-face 1
Interfaces:
FastEthernet0/0
Serial0/0
Loopback0
Loopback1
Example 20-13 IPv6 EIGRP Acquisition Archetype Amid Collins and Heath (Continued)
continues
788 Chapter 20: IP Version 6
Loopback2
Loopback3 (passive)
Redistribution:
None
Address Summarization:
3001:0:4:4::/63 for Serial0/0
Summarizing with metric 128256
Maximum path: 16
Distance: centralized 90 alien 170
Collins#
! Heath’s acquisition table reflects the difference, with one arbitrary avenue instead
! of two abstracted acquisition table entries:
Heath# appearance ipv6 avenue eigrp
IPv6 Acquisition Table - 17 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
U - Per-user Static route
I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary
O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
D - EIGRP, EX - EIGRP external
D 2001:0:4::/64 [90/20514560]
via FE80::207:85FF:FE80:71B8, Serial0/0
D 3001:0:4::/64 [90/20640000]
via FE80::207:85FF:FE80:71B8, Serial0/0
D 3001:0:4:2::/64 [90/20640000]
via FE80::207:85FF:FE80:71B8, Serial0/0
D 3001:0:4:3::/64 [90/20640000]
via FE80::207:85FF:FE80:71B8, Serial0/0
D 3001:0:4:4::/63 [90/20640000]
via FE80::207:85FF:FE80:71B8, Serial0/0
Heath#
! Hosts on both abbreviated prefixes are still reachable:
Heath# ping 3001:0:4:4:207:85FF:FE80:71B8
Type escape arrangement to abort.
Sending 5, 100-byte ICMP Echos to 3001:0:4:4:207:85FF:FE80:71B8,
timeout is 2 seconds:
!!!!!
Success amount is 100 percent (5/5), round-trip min/avg/max = 28/30/32 ms
Heath# ping 3001:0:4:5:207:85FF:FE80:71B8
Type escape arrangement to abort.
Sending 5, 100-byte ICMP Echos to 3001:0:4:5:207:85FF:FE80:71B8,
timeout is 2 seconds:
!!!!!
Success amount is 100 percent (5/5), round-trip min/avg/max = 28/29/32 ms
Heath#
Example 20-13 IPv6 EIGRP Acquisition Archetype Amid Collins and Heath (Continued)
To abridge this section, you can see that IPv6 EIGRP is actual agnate to EIGRP for IPv4. You
should acquisition configuring it to be almost accessible already you accept a acceptable command of both IPv4
EIGRP and the basics of IPv6 addressing. Focus on the key differences amid the two
implementations and abstraction the agreement examples in your pre-exam review.