== Device Configuration (Dual Stack/IPv6) ==

As our network is working well in IPv4 mode lets enable dual stack. This is very easy as its only configuring the interface IP addresses and IPv6 routing.

[[Image(https://ws.learn.ac.lk/raw-attachment/wiki/ipv6v6config/IPv6.jpg)]]

You can refer the following [=#point1 table] for assign Interface IPv6 addresses. In the following IPv6 addresses replace the '''PQRT''' segment with the IPv6 block assign to you. You can find your IP block from here.

{{{#!th 
VLAN
}}} 
{{{#!th 
VLAN Name 
}}}
{{{#!th 
Device Name
}}} 
{{{#!th
VLAN Interface IP
}}}
|----------------
{{{#!td rowspan=3 align=justify
2
}}}
{{{#!td rowspan=3 align=justify
Core
}}}
{{{#!td 
!CampusCore
}}}
{{{#!td 
2401:dd00:PQRT:2::FFFF/64
}}}
|---------------
{{{#!td 
FacACore
}}}
{{{#!td 
2401:dd00:PQRT:2::A/64
}}}
|----------------
{{{#!td 
FacBCore
}}}
{{{#!td 
2401:dd00:PQRT:2::B/64
}}}
|----------------
{{{#!td rowspan=2 align=justify
10
}}}
{{{#!td rowspan=2 align=justify
FacA
}}}
{{{#!td 
FacACore
}}}
{{{#!td 
2401:dd00:PQRT:A110::FFFF/64
}}}
|---------------
{{{#!td 
Dept1PC
}}}
{{{#!td 
no interface IP
}}}
|----------------
{{{#!td rowspan=2 align=justify
20
}}}
{{{#!td rowspan=2 align=justify
FacB
}}}
{{{#!td 
FacBCore
}}}
{{{#!td 
2401:dd00:PQRT:B220::FFFF/64
}}}
|---------------
{{{#!td 
Dept2PC
}}}
{{{#!td 
no interface IP
}}}
|----------------
{{{#!td align=justify
255
}}}
{{{#!td align=justify
Router !Connection/Public IP
}}}
{{{#!td 
!CampusCore
}}}
{{{#!td 
2401:dd00:PQRT::FFFE/64
}}}
|---------------

=== Core Network Layer ===
First Configure the !CampusCore with IPv6 addresses and then move in to FacACore and FacBCore.

==== !CampusCore ====
 - Login to !CampusCore device. Give your console port password (class password)
 - Go to config mode from user mode. Give your enable password (class password)
 - Assign the IPv6 Address to the VLAN interface
{{{
CampusCore(config)#interface vlan 2
CampusCore(config-if)# ipv6 address 2401:dd00:PQRT:2::FFFF/64 
CampusCore(config-if)# exit
CampusCore(config)#interface vlan 255
CampusCore(config-if)# ipv6 address 2401:dd00:PQRT::FFFE/64 
CampusCore(config-if)# exit
}}} 
 - Next we have to configure unicast routing in the Switch
{{{
CampusCore(config)#ipv6 unicast-routing
}}}
 - Make sure you '''save''' the configurations to start-up

Then we will configure FacACore with it's IPv6 Addresses

==== FacACore ====
 - Login to FacACore device. Give your console port password (class password)
 - Go to config mode from user mode. Give your enable password (class password)
 - Assign the IP Address to the VLAN interface and enable unicast routing
{{{
FacACore(config)#interface vlan 2
FacACore(config-if)#ipv6 address 2401:dd00:PQRT:2::A/64
FacACore(config-if)#exit
FacACore(config)#interface vlan 10
FacACore(config-if)#ipv6 address 2401:dd00:PQRT:A110::FFFF/64
FacACore(config-if)#exit 
FacACore(config)#ipv6 unicast-routing
FacACore(config)#exit
FacACore#write
}}}

==== FacBCore ====
 - Repeat same to configure FacBCore
{{{
FacBCore(config)#interface vlan 2
FacBCore(config-if)#ipv6 address 2401:dd00:PQRT:2::B/64
FacBCore(config-if)#exit
FacBCore(config)#interface vlan 20
FacBCore(config-if)#ipv6 address 2401:dd00:PQRT:B220::FFFF/64
FacBCore(config-if)#exit 
FacBCore(config)#ipv6 unicast-routing
FacBCore(config)#exit
FacBCore#write
}}}
 - Finally Verify the connectivity
    * Go to FacACore device
    * Go to privileged mode and ping !CampusCore and FacBCore
{{{
ping 2401:dd00:PQRT:2::FFFF
ping 2401:dd00:PQRT:2::B
}}}
 - You should get a positive reply with "!!"

=== PC Auto Configuration ===
Log in to your Dept1PC and check its IP address by issuing '''ifconfig''' in console. You may notice that there is a new IPv6 address auto configured with the VLAN 10 prefix.
 - Try ping IPv6 gateway
{{{
ping6 2401:dd00:PQRT:A110::FFFF
}}}
 - you will get a positive result

Check the same with Dept2PC. But now it should show an address from VLAN 20 prefix. Check connectivity by ping6 VLAN20 interface ipv6 address.

=== Connecting LAN to the Router ===
Now you have done LAN interface configuration. Let's start routers Configuration.
 - Login to !BorderRt Router and switch to config mode
 - Router's IP allocation is as follows. You can get your Router's IP address from here
||= Interface Name =||= IP Address =||
||Fast Ethernet 0/0 ||2401:dd00:PQRT::FFFF/64||
||Fast Ethernet 0/1 ||<Your Routers WAN IPv6>||
 -  Let's configure the LAN port (fa 0/0)
{{{
BorderRt(config)#interface fastEthernet 0/0
BorderRt(config-if)#ipv6 address 2401:dd00:PQRT::FFFE/64
BorderRt(config-if)#exit
}}}
 - Configure the WAN port (fa 0/1)
{{{
BorderRt(config)#interface fastEthernet 0/1
BorderRt(config-if)#ipv6 address 2401:dd00:6::XXXX/64
BorderRt(config-if)#exit
BorderRt(config)#ipv6 unicast-routing
BorderRt(config)#exit
BorderRt#write
}}}
 - You have successfully finished connecting !CampusCore to the !BorderRt router. Let's verify the connectivity using the ping command
 - Go to !BorderRt and ping to !CampusCore switch's VLAN 255 Interface IP
{{{
ping 2401:dd00:PQRT::FFFF
}}}
- Now Check the routers connectivity in WAN port. Ping to the WAN Gateway
{{{
ping 2401:dd00:6::FFFF
}}}
 - Both these ping commands should give you a reply 

=== Routing ===
In this Lab we will enable OSPF for IPv6 in all the core switches and we will add default routes in !Campuscore and the router.
 - Now let's enable OSPF on Core devices. Starting from !CampusCore
    * Login to !CampusCore? switch and switch to config mode
    * Define OSPF process and Process ID. In this lab use process ID as 1
{{{
CampusCore(config)#ipv6 router ospf 1
}}}
    * Give the router ID, this will be the same as ipv4 ospf router ID for simplicity
{{{
CampusCore(config-rtr)#router-id 10.0.2.1
}}}
    * You are going to announce the subnets which are directly connects to you. Use this command for that
{{{
CampusCore(config-rtr)#redistribute connected
}}}
    * You are enabling OSPF on VLAN 2. Use this command for that.
{{{
CampusCore(config)#interface vlan 2
CampusCore(config-if)# ipv6 ospf 1 area 2
CampusCore(config-if)# exit
}}}
    * Now you have enable OSPF on !CampusCore Switch. Now lets add the default Route.
{{{
CampusCore(config)# ipv6 route ::/0 2401:dd00:PQRT::FFFF
}}}
 - Follow the same steps in FacACore and FacBCore
==== FacACore ====
{{{
FacACore(config)#ipv6 router ospf 1
FacACore(config-rtr)#router-id 10.0.2.2
FacACore(config-rtr)#redistribute connected
FacACore(config-rtr)#exit
FacACore(config)#interface vlan 2
FacACore(config-if)# ipv6 ospf 1 area 2
FacACore(config-if)# exit
}}}

==== FacBCore ====
{{{
FacBCore(config)#ipv6 router ospf 1
FacBCore(config-rtr)#router-id 10.0.2.3
FacBCore(config-rtr)#redistribute connected
FacBCore(config-rtr)#exit
FacBCore(config)#interface vlan 2
FacBCore(config-if)# ipv6 ospf 1 area 2
FacBCore(config-if)# exit
}}}

 - Now you have enable Routing in your Core network. Let's verify whether it is working. 
    * Go to Dept1PC and try a Ping6 to Dept2PC
    * Try a ping to Router's LAN port
{{{
ping6 2401:dd00:PQRT::FFFF
}}}
    * Both should give you a reply
 - Add the !BorderRt Routers default gateway
    * Go to !BorderRt and switch to config mode
    * Add the default route
{{{
 - CampusCore(config)# ipv6 route ::/0 2401:dd00:6::FFFF
}}}
    * Verify the route by ping a known host from the !BorderRt router
{{{
ping 2401:dd00:1::161
}}}
    * This should give you a reply

=== Router Configuration ===
Here we need no NAT to access internet, only dependency is the correct routing details.
 - Login to !BorderRt Router and switch to config mode
 - Add a static route in the router so that the traffic coming to our defined network will redirect to !CampusCore switch
{{{
BorderRt(config)#ipv6 route 2401:dd00:PQRT::/48 2401:dd00:PQRT::FFFF
}}}
 - Now try a ping from DeptPC1 to the 2401:dd00:1::161 . It should give reply