IPV6 over a PPTP Link

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1

Hello,
can i ofer ipv6 addresses through a PPTP connection using cisco ?
if yes, how please ?
Thank you
    Meftah Tayeb
IT Consulting
http://www.tmvoip.com/
phone: +21321656139
Mobile: +213660347746

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2

I did this in the past without troubles.

http://www.gossamer-threads.com/lists/nsp/ipv6/27525

Should give you some help.

- Jared

-- snip --
!
vpdn enable
!
vpdn-group 1
! Default PPTP VPDN group
accept-dialin
protocol pptp
virtual-template 1
!
interface Virtual-Template1
ip unnumbered FastEthernet2/0
ipv6 unnumbered FastEthernet2/0
ipv6 enable
ipv6 nd reachable-time 30
no ipv6 nd suppress-ra
peer default ip address pool DIAL-IN
peer default ipv6 pool DIAL-IN6
ppp encrypt mppe 128
ppp authentication ms-chap
ppp ipcp dns 129.250.35.250 129.250.35.251
!
ip local pool DIAL-IN 10.10.15.72 10.10.15.79
ipv6 local pool DIAL-IN6 3ffe:3ffe:0:7080::/62 64
-- snip --

3

ok, that's using RA
but i want to do a routed interface
so give the PPTP host a static ip and route through it
thank you

4

So, in order to do that, I recommend you do the backend authentication via RADIUS to handle this provisioning and routing.

Cisco has documentation on the AV pairs that are necessary to send in the RADIUS response that goes to your PPTP device. Make sure that you are using something with a beefy enough CPU to perform this as PPTP/IPv6 may be in the "slow-path" depending on the device. You want as much to be offloaded to the hardware as feasible.

- Jared

5

great suggestion
i didn't want to use it for a high load of users, just for 2 linked routers
but anyway, i did it through a 6in4 tunnel over PPTP
Thank you

6

If that's your goal, you should just use GRE or IPIP if the IPs are
static on each end. You may be able to create the local user on the device if one
end is a dynamic IP, but I don't have experience there with PPTP on IOS.

7

These slides were presented on various conferences showing native v6 via L2TP. While you asked for PPTP, I thought to point to the link anyway, maybe the slides are useful.

http://www.blogg.ch/uploads/Native-IPv6-via-xdsl-how-to-tweak-your-LNS_v0.41.pdf

Fredy K�nzler
Init7 / AS13030

8

Maybe you can try,i am not sure it will work or not, i don't have the lab to test the script at this moment.

aaa attribute list IPV6
attribute type addrv6 "DHCPv6POOL" protocol ipv6
!
username ipv6 privilege 0 password ipv6
username ipv6 aaa attribute list IPV6
!

Terry

发件人： Jared Mauch
发送时间： 2011-09-16 00:36:58
收件人： Meftah Tayeb
抄送： nanog
主题： Re: IPV6 over a PPTP Link

I did this in the past without troubles.
http://www.gossamer-threads.com/lists/nsp/ipv6/27525
Should give you some help.
- Jared
-- snip --
!
vpdn enable
!
vpdn-group 1
! Default PPTP VPDN group
accept-dialin
protocol pptp
virtual-template 1
!
interface Virtual-Template1
ip unnumbered FastEthernet2/0
ipv6 unnumbered FastEthernet2/0
ipv6 enable
ipv6 nd reachable-time 30
no ipv6 nd suppress-ra
peer default ip address pool DIAL-IN
peer default ipv6 pool DIAL-IN6
ppp encrypt mppe 128
ppp authentication ms-chap
ppp ipcp dns 129.250.35.250 129.250.35.251
!
ip local pool DIAL-IN 10.10.15.72 10.10.15.79
ipv6 local pool DIAL-IN6 3ffe:3ffe:0:7080::/62 64
-- snip --