Question : Problem: ipv6 routing on a cisco ios router

Hi,

We just received an ipv6 connection from a provider. We already are setup with a /126 between us on our ROUTER-A and them over a 1gb link. We can ping their side and they can ping us via ipv6 address.

Currently on the access router ROUTER-B we have individual servers in different vlans with ipv4 ips with gateways assigned in their vlan for them to connect.


1) I want to know how I can assign them an ipv6 /48 so they can use on their host machine in their vlan. We have already been allocated a /32 ipv6 block from ARIN.

Example:

interface vlan 1
ip address 10.10.10.1 255.255.255.0
ip address 10.10.11.1 255.255.255.0 secondary

and then the client would have 10.10.10.2 - 254 /24 and 10.10.12.-254 /24 on thier server.

If I wanted to do the same for ipv6, how would I do that? Would I just take the first address in the ipv6 /48 as I did in the ipv4 /24 above?

Example if I had ipv6 block: 2001:49f0:0000:0000:0000:0000:0000:0000

would it be:

interface vlan 1
ipv6 address 2001:49f0:0000:0000:0000:0000:0000:0001
ipv6 address 2001:49f0:0001:0000:0000:0000:0000:0001 secondary



2) I want to connect ROUTER-B that will have the vlan information for each server and the corresponding ipv6 addresses to ROUTER-A that has the direct ipv6 connection to the provider to RouterB.
 How would I Put in a default IPV6 route so that ALL ipv6 traffic not local to Router-B to goto Router-A, which inturn would have a similar default route to the Provider?

if the link between the two is such:

Router-A
interface g1/1
ip address 10.10.20.1 255.255.255.252
ipv6 address 2001:49f0:0000:0000:0000:0000:0000:0001/126

Router-B
ipv6 route ipv6 route ::/0 2001:49f0:0000:0000:0000:0000:0000:0001
interface g1/1
ip address 10.10.20.2 255.255.255.252
ipv6 address 2001:49f0:0000:0000:0000:0000:0000:0002/126



3) What would the client add to their side? Please show some examples for a Linux/BSD Machine.. Heck even a windows would be helpful.

Thanks!

Answer : Problem: ipv6 routing on a cisco ios router

See http://tinyurl.com/yzuoud for the full scoop.  There are plenty of prerequisite steps to configure.

Once those are out of the way, you'll need IPv6 addressing (with /mask) on the relevant interfaces, static or dynamic routes, etc.  You have the basic idea, but without seeing your stock config, router specs, and IOS version it'd be hard for us to be specific.