1. IPv6 Routing

2. Agenda IPv6 Routing Concepts in CCNA R&S IPv6 Host Routing Table
IPv6 Routing Table
Connected Routes
Local Routes
Static Routing
Default Route
“The rest of this is exactly like IPv4 only different”
- Rick Graziani at Academy Conference 2013 right after he finishes talking about IPv6 address types

3. Draft Routing & Switching Essentials – IPv6 Content
Chapter 6: Static Routing
6.2.3 Configure IPv6 Static Routes
6.2.4 Configure IPv6 Default Routes
6.4.2 Configure IPv6 Summary Routes
Chapter 7: Routing Dynamically
7.3.2 Configuring the RIPng Protocol
7.5.4 Analyze an IPv6 Routing Table
Chapter 8: Single-Area OSPF
8.3 Configuring Single-area OSPFv3
Note: EIGRP for IPv6 covered in Scaling Networks
Draft

4. Routing & Switching Essentials – Labs and Activities
Packet Tracer – Configuring IPv6 Static and Default Routes
Lab – Configuring IPv6 Static and Default Routes
Packet Tracer – Configuring IPv6 Route Summarization
Lab – Calculating Summary Routes with IPv4 and IPv6
Lab – Troubleshooting IPv4 and IPv6 Static Routes
Packet Tracer - Configuring RIPng
Lab – Configuring RIPv2 and RIPng
Activity – Identify Parts of an IPv6 Routing Table Entry
Packet Tracer – Configuring Basic OSPFv3 in a Single Area
Lab – Configuring Basic Single-Area OSPFv3
Draft

5. Host Routing Table
Introduction to Networks

6. Making a Router an IPv6 Router
Router(config)# ipv6 unicast-routing
A router’s interfaces can be enabled (configured with an IPv6 address) for IPv6 like any other device on the network
For the router to “act” as an IPv6 router it must be enabled with the ipv6-unicast routing command
This enables the router to:
Send ICMPv6 Router Advertisement messages
Enable the forwarding of IPv6 packets
Configure static routing and participate in IPv6 routing protocols (EIGRP for IPv6, OSPFv3)
Similar to “old” ip routing command for IPv4 which is enabled by default

7. IPv4 Routing Table R1# show ip route
C /16 is directly connected, Loopback3
/24 is subnetted, 1 subnets
C is directly connected, FastEthernet0/1
/8 is variably subnetted, 2 subnets, 2 masks
C /16 is directly connected, Loopback1
C /24 is directly connected, FastEthernet0/0
C /24 is directly connected, Loopback0
IPv4 Routing table lists the classful network first and subnets below the respective classful network

8. IPv6 Routing Table R1# show ipv6 route IPv6 Routing Table - 8 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
U - Per-user Static route, M - MIPv6
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
C :DB8:CAFE:1::/64 [0/0]
via ::, FastEthernet0/0
L :DB8:CAFE:1::1/128 [0/0]
C :DB8:CAFE:1111::1/128 [0/0]
via ::, Loopback0
C :DB8:CAFE:A001::/64 [0/0]
via ::, Serial0/0/0
L :DB8:CAFE:A001::1/128 [0/0]
C :DB8:CAFE:A002::/64 [0/0]
via ::, Serial0/0/1
L :DB8:CAFE:A002::1/128 [0/0]
L FF00::/8 [0/0]
via ::, Null0

9. Examining the Routing Table

10. Show IPv6 Route Command Syntax Useful Options*:
show ipv6 route [ipv6-address | ipv6-prefix/prefix-length [longer- prefixes] | [protocol] [updated [boot-up] [day month] [time]] | interface interface-type interface-number | nsf | table table-id |watch]
Useful Options*:
show ipv6 route connected
show ipv6 route local
Show ipv6 route static
*These options not supported by Cisco Packet Tracer

11. Connected Routes
R1 has four interfaces on which a global IPv6 unicast address has been configured
Interfaces that are [up/up] are added to the routing table identified with a C in the IPv6 routing table
R1# show ipv6 interface brief
FastEthernet0/ [up/up]
FE80::1
2001:DB8:CAFE:1::1
FastEthernet0/ [administratively down/down]
Serial0/0/ [up/up]
2001:DB8:CAFE:A001::1
Serial0/0/ [up/up]
2001:DB8:CAFE:A002::1
Loopback [up/up]
FE80::202:16FF:FE73:1889
2001:DB8:CAFE:1111::1
R1# show ipv6 route
C :DB8:CAFE:1::/64 [0/0]
via ::, FastEthernet0/0
C :DB8:CAFE:1111::1/128 [0/0]
via ::, Loopback0
C :DB8:CAFE:A001::/64 [0/0]
via ::, Serial0/0/0
C :DB8:CAFE:A002::/64 [0/0]
via ::, Serial0/0/1
*Only connected shown

12. Local Routes L Routes R1# show ipv6 route
IPv6 Routing Table - 8 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
U - Per-user Static route, M - MIPv6
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
C :DB8:CAFE:1::/64 [0/0]
via ::, FastEthernet0/0
L :DB8:CAFE:1::1/128 [0/0]
C :DB8:CAFE:1111::1/128 [0/0]
via ::, Loopback0
C :DB8:CAFE:A001::/64 [0/0]
via ::, Serial0/0/0
L :DB8:CAFE:A001::1/128 [0/0]
C :DB8:CAFE:A002::/64 [0/0]
via ::, Serial0/0/1
L :DB8:CAFE:A002::1/128 [0/0]
L FF00::/8 [0/0]
via ::, Null0
L Routes

13. Local Routes Not routable
Local route = similar to what we called a host route in IPv4
Host routes point to the router’s IPv6 global unicast addresses
The router uses these routes when the packets are addressed to one of its own interfaces
Router can more efficiently process packet to itself
Host routes in IPv6 will have /128 prefix
L :DB8:CAFE:1::1/128 [0/0]
via ::, FastEthernet0/0
L :DB8:CAFE:A001::1/128 [0/0]
via ::, Serial0/0/0
L :DB8:CAFE:A002::1/128 [0/0]
via ::, Serial0/0/1
L FF00::/8 [0/0]
via ::, Null0
L FF80::/10 [0/0]

14. Local Routes Multicast Link-Local Multicast Link-local
Multicast addresses are not routed
FF00/8 is the route to the entire multicast range
The router will drop all multicast packets directed towards multicast groups which are not in the routing table
If a host joins a multicast group then that multicast group address will be added to the routing table
Link-Local
FE80/10 is the link-local address
If a router receives a packet destined to link-local address it will drop it
L FE80::/10 [0/0] does not appear in the output of show ipv6 route in Packet Tracer
Multicast
Link-local
L FF00::/8 [0/0]
via ::, Null0
L FF80::/10 [0/0]

15. Static Route IPv6 Command Syntax

16. Default Static IPv6 Command Syntax

17. Static Routing Static Routing is configured using ipv6 route command
Next Hop Interface (recommended due to CEF forwarding)
ipv6 route 2001:db8:cafe:3333/ :db8:cafe:A003
Outgoing Interface
ipv6 route 2001:db8:cafe:3333/64 s0/0/1
Link-local as Next Hop*
ipv6 route 2001:db8:cafe:3333/64 fe80::3 s0/0/1
Need to specify which interface with a fully specified static route as the link-local address can be the same on multiple interfaces
Summary route
ipv6 route 2001:db8:cafe::/ :db8:feed::1

18. IPv6 Dynamic Routing Protocols
Exterior Gateway Protocols
Interior Gateway Protocols
Distance Vector
Link State
Path Vector
Distance Vector Routing Protocols
Link State Routing Protocols
Path Vector
RIPv2
EIGRP
OSPFv2
IS-IS
BGP-4
RIPng
EIGRP for IPv6
OSPFv3
IS-IS for IPv6
BGP-4 for IPv6
IPv4
IPv6
Media Description:
Use graphic from Powerpoint
Most IPv6 routing protocol commands are identical to their IPv4 counterpart
Just need to substitute “ipv6” for “ip”

19. Static Routing PT Activity
Enable ipv6 unicast-routing
Configure static routes
Configure default routes
Configure floating static route

20. Configuring Static and Default IPv6 Routes
PT Activity
Configuring Static and Default IPv6 Routes

21. Questions and Answers