Table of Contents

Chapter 1 IPv6 Static Routing Configuration. 1-1

1.1 Introduction to IPv6 Static Routing. 1-1

1.1.1 Features of IPv6 Static Routes. 1-1

1.1.2 Default IPv6 Route. 1-1

1.2 Configuring an IPv6 Static Route. 1-2

1.2.1 Configuration prerequisites. 1-2

1.2.2 Configuring an IPv6 Static Route. 1-2

1.3 Displaying and Maintaining IPv6 Static Routes. 1-2

1.4 IPv6 Static Routing Configuration Example. 1-3

 

Chapter 1  IPv6 Static Routing Configuration

When configuring IPv6 Static Routing, go to these sections for information you are interested in:

l           Introduction to IPv6 Static Routing

l           Configuring an IPv6 Static Route

l           Displaying and Maintaining IPv6 Static Routes

l           IPv6 Static Routing Configuration Example

 

 

1.1  Introduction to IPv6 Static Routing

Static routes are special routes that are manually configured by network administrators. They work well in simple networks. Configuring and using them properly can improve the performance of networks and guarantee enough bandwidth for important applications.

However, static routes also have shortcomings: any topology changes could result in unavailable routes, requiring the network administrator to manually configure and modify the static routes.

1.1.1  Features of IPv6 Static Routes

Similar to IPv4 static routes, IPv6 static routes work well in simple IPv6 network environments.

Their major difference lies in the destination and next hop addresses. IPv6 static routes use IPv6 addresses whereas IPv4 static routes use IPv4 addresses. Currently, IPv6 static routes do not support VPN instance.

1.1.2  Default IPv6 Route

The IPv6 static route that has the destination address configured as “::/0” (indicating a prefix length of 0) is the default IPv6 route. If the destination address of an IPv6 packet does not match any entry in the routing table, this default route will be used to forward the packet.

1.2  Configuring an IPv6 Static Route

In small IPv6 networks, IPv6 static routes can be used to forward packets. In comparison to dynamic routes, it helps to save network bandwidth.

1.2.1  Configuration prerequisites

l           Configuring parameters for the related interfaces

l           Configuring link layer attributes for the related interfaces

l           Enabling IPv6 packet forwarding

l           Ensuring that the neighboring nodes are IPv6 reachable

1.2.2  Configuring an IPv6 Static Route

To do…	Use the commands…	Remarks
Enter system view	System-view	—
Configure an IPv6 static route with the output interface being a broadcast or NBMA interface	ipv6 route-static ipv6-address prefix-length [ interface-type interface-number ] nexthop-address [ preference preference-value ]	Required Not configured by default The default preference of IPv6 static routes is 60.
Configure an IPv6 static route with the output interface being a point-to-point interface	ipv6 route-static ipv6-address prefix-length { interface-type interface-number | nexthop-address } [ preference preference-value ]

 

 

1.3  Displaying and Maintaining IPv6 Static Routes

To do…	Use the command…	Remarks
Display IPv6 static route information	display ipv6 routing-table protocol static [ inactive | verbose ]	Available in any view
Remove all IPv6 static routes	delete ipv6 static-routes all	Available in system view

 

 

1.4  IPv6 Static Routing Configuration Example

I. Network requirements

With IPv6 static routes configured, all hosts and switches can interact with each other.

II. Network diagram

Figure 1-1 Network diagram for static routes (on switches)

III. Configuration procedure

1)         Configure the IPv6 addresses of all VLAN interfaces (Omitted)

2)         Configure IPv6 static routes.

# Configure the default IPv6 static route on Switch A.

<SwitchA> system-view

[SwitchA] ipv6 route-static :: 0 4::2

# Configure two IPv6 static routes on Switch B.

<SwitchB> system-view

[SwitchB] ipv6 route-static 1:: 64 4::1

[SwitchB] ipv6 route-static 3:: 64 5::1

# Configure the default IPv6 static route on Switch C.

<SwitchC> system-view

[SwitchC] ipv6 route-static :: 0 5::2

3)         Configure the IPv6 addresses of hosts and gateways.

Configure the IPv6 addresses of all the hosts based upon the network diagram, configure the default gateway of Host A as 1::1, that of Host B as 2::1, and that of Host C as 3::1.

4)         Display configuration information

# Display the IPv6 routing table of Switch A.

[SwitchA] display ipv6 routing-table

Routing Table :

         Destinations : 5        Routes : 5

 

Destination  : ::/128                              Protocol     : Static

 NextHop      : FE80::510A:0:8D7:1                  Preference   : 60

 Interface    : Vlan-interface200                   Cost         : 0

 

 Destination  : ::1/128                              Protocol     : Direct

 NextHop      : ::1                                  Preference   : 0

 Interface    : InLoop0                              Cost         : 0

 

 Destination  : 1::/64                               Protocol     : Direct

 NextHop      : 1::1                                 Preference   : 0

 Interface    : Vlan-interface100                    Cost         : 0

 

 Destination  : 1::1/64                              Protocol     : Direct

 NextHop      : ::1                                  Preference   : 0

 Interface    : InLoop0                              Cost         : 0

 

 Destination  : FE80::/64                            Protocol     : Direct

 NextHop      : ::                                   Preference   : 0

 Interface    : NULL0                                Cost         : 0

# Verify the connectivity with the ping command.

[SwitchA] ping ipv6 3::1

  PING 3::1 : 56  data bytes, press CTRL_C to break

    Reply from 3::1

    bytes=56 Sequence=1 hop limit=254  time = 63 ms

    Reply from 3::1

    bytes=56 Sequence=2 hop limit=254  time = 62 ms

    Reply from 3::1

    bytes=56 Sequence=3 hop limit=254  time = 62 ms

    Reply from 3::1

    bytes=56 Sequence=4 hop limit=254  time = 63 ms

    Reply from 3::1

    bytes=56 Sequence=5 hop limit=254  time = 63 ms

 

  --- 3::1 ping statistics ---

    5 packet(s) transmitted

    5 packet(s) received

    0.00% packet loss

    round-trip min/avg/max = 62/62/63 ms