05-03-2013 03:04 AM - edited 03-01-2019 05:40 PM
Hello,
I'm trying to configure PPPoE in IPv6 on a Cisco Router 7301 (without RADIUS) but it doesn't send DNS(ip name-server) and an IPv6 configuration from the pool (Windows 7).
I tried in IPv4, and everything worked.
VLANs
2 : fd01::120:0/112
96 : fd01::96:0/112
120 :fd01::120:0/112
This is an IPv6 Test network
Thanks.
My network
Router
aaa new-model
pppoe-forwarding
ip cef
!ip domain name server1.stageipv6.com
ip name-server fd01::120:53
ip ssh version 2
ipv6 unicast-routing
ipv6 cef
!
username test password 7 06120A3258
!
bba-group pppoe stag_pppoe
virtual-template 1
sessions per-mac limit 2
!
interface GigabitEthernet0/0
description VLAN 2
ip address 80.245.16.27 255.255.255.128
duplex auto
speed auto
media-type rj45
no negotiation auto
ipv6 address FD01::2:1000/112
ipv6 enable
!
interface GigabitEthernet0/1
description VLAN 96
ip address 192.168.96.27 255.255.255.0
duplex auto
speed auto
media-type rj45
no negotiation auto
ipv6 address FD01::96:1/112
ipv6 enable
pppoe enable group stag_pppoe
!
interface Virtual-Template1
description pppoe bba1
no ip address
ipv6 address autoconfig
ipv6 enable
ipv6 mtu 1492
no peer default ip address
peer default ipv6 pool pool_pppoe
ppp authentication chap callin
!
ipv6 route FD01::120:0/112 FD01::2:2
ipv6 local pool pool_pppoe FD01::96:0/112 114
ipconfig /all
No field IPv6 address
Just IPv6 link local : fe80:....
DNS : fec0:0:0:0:ffff::1%1
fec0:0:0:0:ffff::2%1
fec0:0:0:0:ffff::3%1
Solved! Go to Solution.
05-06-2013 06:02 AM
Hi Florian,
There are a few things missing.
- Configure a loopback interface with an IPv6 address.
- Change your "ipv6 address autoconfig" on the virtual-template1 for "ipv6 unnumbered Loopback0".
- Add "no ipv6 nd ra suppress" on virtual-template1.
interface Loopback0
ipv6 address 2001:DB8:12FF::1/128
!
interface Virtual-Template1
peer default ipv6 pool test
ipv6 unnumbered Loopback0
ipv6 enable
ipv6 nd other-config-flag
no ipv6 nd ra suppress
ppp authentication chap
ipv6 dhcp server test
!
ipv6 local pool test 2001:DB8:12FF:FF::/56 64
!
ipv6 dhcp pool test
dns-server 2001:db8:1:1::1
!
05-03-2013 03:44 PM
Hi Florian,
A couple of things.
- Configure a /64 on the pool instead of a /112. Only /64 works for SLAAC.
ipv6 local pool pool_pppoe FD01::0/56 64
-Unlike ipcp, ipv6cp does not supply DNS information.
You need to configure stateless DHCP in order for the host to learn the DNS automatically.
ipv6 dhcp pool test
dns-server 2001:db8:1:1::1
interface Virtual-Template1
ipv6 nd other-config-flag
ipv6 dhcp server test
Regards
05-06-2013 12:09 AM
Hello,
Thanks, but it doesn't work too with your configuration.
I don't know what and where is the real problem.
Regards
05-06-2013 06:02 AM
Hi Florian,
There are a few things missing.
- Configure a loopback interface with an IPv6 address.
- Change your "ipv6 address autoconfig" on the virtual-template1 for "ipv6 unnumbered Loopback0".
- Add "no ipv6 nd ra suppress" on virtual-template1.
interface Loopback0
ipv6 address 2001:DB8:12FF::1/128
!
interface Virtual-Template1
peer default ipv6 pool test
ipv6 unnumbered Loopback0
ipv6 enable
ipv6 nd other-config-flag
no ipv6 nd ra suppress
ppp authentication chap
ipv6 dhcp server test
!
ipv6 local pool test 2001:DB8:12FF:FF::/56 64
!
ipv6 dhcp pool test
dns-server 2001:db8:1:1::1
!
05-06-2013 06:35 AM
Hello,
It works, thanks but why this loopback 2001:db8:12ff::1/128 ?
Can I configure mine ?
05-06-2013 06:40 AM
Hi Florian,
I am glad it is now working. The loopback IPv6 address was just and example. You can definitely change it to what ever address you want.
Regards
05-06-2013 06:44 AM
Hello,
I tried without the loopback and it works too, so is the loopback useful or not ?
It seems that the option no ipv6 nd ra suppress was the only missing command.
Regards
05-06-2013 07:12 AM
Hi Florian,
The loopback is used by the "ipv6 unnumbered" on the virtual-template1. You should configure it. It is usually a best practice to have a loopback interface configured on your router anyhow.
Regards
05-06-2013 07:43 AM
Thanks for all Harold.
Have a nice day, and maybe see you later with another question about IPv6.
Regards
05-07-2013 01:05 AM
Hello,
With a customer on PPP, I would like to have an access on the two website in VLAN 120.
I can ping the IPv6 but not the name, maybe the DNS doesn't work or something like this.
If you want any configurations, I am here.
Regards
05-07-2013 06:52 PM
Hi Florian,
Do you see the DNS address on the windows 7 workstation? Can you ping the DNS address? If so, try nslookup the web site host name.
Regards
05-08-2013 05:48 AM
Hello,
Yes, I see the DNS address and I can ping it.
However, nslookup the web site host name failed, DNS request time out.
So, may be, my DNS doesn't work correctly, I'm not sure (DNS = PowerDNS)
Thanks, regards.
05-08-2013 12:01 PM
Hi Florian,
Would there be an ACL in the path blocking access to port UDP 53 to your dns server?
Regards
05-09-2013 11:35 PM
Hello,
No ACL, I have the Firewall where I accepted all services.
Edit : When I put the network configuration manually on the PPP, it works...This is...surprising.
Regards.
05-11-2013 09:24 AM
Hi Florian,
Surprising indeed. What flavor of windows do you use?
Regards
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