December 22nd 2015

Topology:

Routers R6 and R7 are not active in this task.
Routers R3 and R5 run IOS-XR, remaining routers run IOS.
Configure loopback0 interfaces and connecting interfaces between the routers, using the allocated IPv6 prefix.

Requirements:

1. Use OSPFv3 protocol to provide IPv6 routing between all active devices in the topology.

2. On IOS routers, don't use "ospfv3" keyword for configuration.

3. Configure loopback0 interfaces and segments connecting routers R1, R2 and R3 in OSPF Area 0.

4. Configure loopback0 interface of R8, and segments R1-R8 in OSPF Area 2.

5. Configure loopback0 interfaces of R4 and R5, and segments R3-R5, R2-R4 and R4-R5 in

OSPF Area 3.

6. Network type on segment R1-R8 should be standards based, and there should be no DR/BDR election on this segment.

7. Network type on segment R4-R5 should be Cisco proprietary, with Hello being sent every 30 seconds.

Solution:

Highlight the text below to reveal the solution.

Requirement #2 - IOS allows two options for OSPFv3 configuration. In this task, use syntax "ipv6 router ospf PID".

Requirement #6 - Standards based network types are NBMA and point-to-multipoint. DR/BDR not elected on point-to-multipoint network types.

Requirement #7 - Cisco proprietary network types are broadcast, point-to-multipoint and point-to- multipoint non-broadcast. The last one has a hello/hold interval of 30/120.

R1:

!
interface Ethernet0/0
ipv6 address 2001:11:0:13::1/64
ipv6 ospf 1 area 0
!
interface Ethernet0/1
ipv6 address 2001:11:0:12::1/64
ipv6 ospf 1 area 0
!
interface Ethernet1/0
ipv6 address 2001:11:0:18::1/64
ipv6 ospf 1 area 2
ipv6 ospf network point-to-multipoint
!
interface Loopback0
ipv6 address 2001:11:0:1::1/64
ipv6 ospf 1 area 0
!
ipv6 router ospf 1
router-id 11.0.1.1

R2:

!
interface Loopback0
ipv6 address 2001:11:0:2::2/64
ipv6 ospf 1 area 0
!
interface Ethernet0/0
ipv6 address 2001:11:0:23::2/64
ipv6 ospf 1 area 0
!
interface Ethernet0/1
ipv6 address 2001:11:0:12::2/64
ipv6 ospf 1 area 0
!

ipv6 router ospf 1

router-id 11.0.2.2

R3:

!
router ospfv3 CCIE
router-id 11.0.3.3
area 0
interface Loopback0
!
interface GigabitEthernet0/0/0/0
!
interface GigabitEthernet0/0/0/1
!
!
area 3
interface GigabitEthernet0/0/0/2
!
!
!

R4:

!
interface Loopback0
ipv6 address 2001:11:0:4::4/64
ipv6 ospf 1 area 3
!
interface Ethernet0/0
ipv6 address 2001:11:0:45::4/64
ipv6 ospf 1 area 3
ipv6 ospf neighbor FE80::250:56FF:FE29:F5EA
ipv6 ospf network point-to-multipoint non-broadcast
!
interface Ethernet0/1
ip address 11.0.24.4 255.255.255.0
ipv6 address 2001:11:0:24::4/64
ipv6 ospf 1 area 3
!

ipv6 router ospf 1

router-id 11.0.4.4

R5:

!
router ospfv3 CCIE
router-id 11.0.5.5
area 3
interface Loopback0
!
interface GigabitEthernet0/0/0/1
network point-to-multipoint non-broadcast
neighbor fe80::a8bb:ccff:fe00:100
!
interface GigabitEthernet0/0/0/2
!
!
!

R8:

!
interface Loopback0
ipv6 address 2001:11:0:8::8/64
ipv6 ospf 1 area 2
!
interface Ethernet0/0
ipv6 address 2001:11:0:18::8/64
ipv6 ospf 1 area 2
ipv6 ospf network point-to-multipoint
!

ipv6 router ospf 1

router-id 11.0.8.8

Verification:

Ethernet0/0 is up, line protocol is up

Link Local Address FE80::A8BB:CCFF:FE00:100, Interface ID 3

Area 3, Process ID 1, Instance ID 0, Router ID 11.0.4.4

Network Type POINT_TO_MULTIPOINT, Cost: 10

Transmit Delay is 1 sec, State POINT_TO_MULTIPOINT

Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5

Hello due in 00:00:12

Graceful restart helper support enabled

Index 1/1/2, flood queue length 0

Next 0x0(0)/0x0(0)/0x0(0)

Last flood scan length is 1, maximum is 8

Last flood scan time is 0 msec, maximum is 0 msec

Neighbor Count is 1, Adjacent neighbor count is 1

Adjacent with neighbor 11.0.5.5

Suppress hello for 0 neighbor(s)

R4#show ipv6 route ospf

IPv6 Routing Table - default - 23 entries

Codes: C - Connected, L - Local, S - Static, U - Per-user Static route

B - BGP, HA - Home Agent, MR - Mobile Router, R - RIP

H - NHRP, I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea

IS - ISIS summary, D - EIGRP, EX - EIGRP external, NM - NEMO

ND - ND Default, NDp - ND Prefix, DCE - Destination, NDr - Redirect

O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2

ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2, l - LISP

OI 2001:11:0:1::1/128 [110/20]