Nodes IPv6 address

[evandropadrao]

How can I configure CISCO Router CGR1120 to all node's address is formed by an specific prefix + node's EUI64, as example below:

Prefix: fa75:4433:4433:1010/64

Node 1: EUI-64 = 10-23-4f-4a-00-00-10-1e

             IPv6 = fa75:4433:4433:1010:1023:4f4a:0000:101e

Node 2: EUI-64 = 10-23-4f-4a-00-00-11-15

             IPv6 = fa75:4433:4433:1010:1023:4f4a:0000:1115

Thanks!

Evandro Padrao

eaguiar@fitec.org.br

[Harold Ritter]

It would be the following:

interface xxx

 ipv6 address fa75:4433:4433:1010/64 eui-64

Regards,

[Deepak Kumar]

Hi,

Enable IPv6 routing and apply configuration as:

interface gig x/x/x

 ipv6 address fa75:4433:4433:1010/64 eui-64

[Giovanni Alexander Molina]

You can configure it as: ipv6 address fa75:4433:4433:1010::1/64 so it will be easier to remember.

In other words it will be like ipv6 address fa75:4433:4433:1010:0:0:0:1/64 on the long way.

[evandropadrao]

First of all, thank you for all the collaborations, but it didn't solve my problem.

The original configuration was:

interface Wpan4/1
no ip address
ip broadcast-address 0.0.0.0
no ip route-cache
ieee154 beacon-async min-interval 10 max-interval 20 suppression-coefficient 1
ieee154 notch 12-31
ieee154 panid 1234
ieee154 ssid PTI
ieee154 txpower 11
ipv6 address FDA7:5555:5555:1010::1/64
ipv6 enable
ipv6 dhcp server HOSTS-IPV6 rapid-commit
end

and the results were:

CGR1000>show wpan 4/1 link-neighbors ns
------------------------- WPAN LINK NEIGHBOR TABLE WITH NS [4] -------------------------
EUI64 IPV6 address Lifetime Last NS
3831ACFF00000013 FDA7:5555:5555:1010:6546:4BFF:AA7C:F9EC 1200 12:46:32
3831ACFF00000015 FDA7:5555:5555:1010:11F5:B953:24AA:F32A 1200 12:46:43
Number of Entries in WPAN LINK NEIGHBOR TABLE: 2

Then, I've changed to:

interface Wpan4/1
no ip address
ip broadcast-address 0.0.0.0
no ip route-cache
ieee154 beacon-async min-interval 10 max-interval 20 suppression-coefficient 1
ieee154 notch 12-31
ieee154 panid 1234
ieee154 ssid PTI
ieee154 txpower 11
ipv6 address FDA7:5555:5555:1010::/64 eui-64
ipv6 enable
end

and the results are (no nodes connected in the wpan):

CGR1000>show wpan 4/1 link-neighbors ns
------------------------- WPAN LINK NEIGHBOR TABLE WITH NS [4] -------------------------
EUI64 IPV6 address Lifetime Last NS
Number of Entries in WPAN LINK NEIGHBOR TABLE: 0

Then, what is my mistake (or my understood) ?

Thanks!!

[Harold Ritter]

Any reason why you want to configure EUI-64 rather than configuring a static address? It is kind of uncommon to use EUI-64 on a router interface.

Regards,

[evandropadrao]

I'm developing a tool to test remotely different devices connected to a WAN formed by CISCO CGR1120 router (a WiSUN solution). My tool will not communicate to the router to get the device's address. Then, from the operator's point of view, it's easier for the operator to know that the address's device is formed by "prefix + EUI64" previously, due to these addresses will be defined (or fill in) manually. 

Regards!

[Harold Ritter]

Whether the host uses the EUI-64 or not depends on the host itself, not on the router. The router sends the router advertisement message with the relevant prefix(es). The host then use this prefix(es) and generate the interface ID (IID) based on EUI-64 or some other algorithm (pseudo random generation for instance). You should check what the devices are and how they could be configured to use EUI-64.

Regards, 

[evandropadrao]

I'm confused with your response because I understand that the CGR1120 router is the DHCPv6 server, then the router is the element in the network that will assign an IPv6 to each node.

In fact, I would like that the application IPv6 (prefix FDA7:5555:5555:1010::/64) was formed as network IPv6 (prefix 

FE80::/64), as shown below:

CGR1000>show ipv6 dhcp binding
Client: FE80::3A31:ACFF:0:13
DUID: 0003001B3831ACFF00000013
Username : unassigned
VRF : default
IA NA: IA ID 0x00000000, T1 43200, T2 69120
Address: FDA7:5555:5555:1010:B541:2C24:F772:BF4F
preferred lifetime 86400, valid lifetime 172800
expires at Oct 25 2019 10:32 AM (154683 seconds)
Client: FE80::3A31:ACFF:0:15
DUID: 0003001B3831ACFF00000015
Username : unassigned
VRF : default
IA NA: IA ID 0x00000000, T1 43200, T2 69120
Address: FDA7:5555:5555:1010:CD50:A5C8:6861:299C
preferred lifetime 86400, valid lifetime 172800
expires at Oct 25 2019 02:09 PM (167702 seconds)
CGR1000>

[Harold Ritter]

As you are using DHCPv6, the addresses assigned to the devices will be assigned randomly by the DHCP server. You could configure manually, but this could represent a lot of work and might proof hard to maintained, depending on the number of devices requiring IPv6 address.

Regards,

[evandropadrao]

As a beginner in CISCO platform, how can I configure manually (or which commands can I use to do this configuration)?

Thanks,

Evandro Padrão