Re: PPPoE with IPv6

Yes, what is interesting is that let's say we did not want to allocate
addressing using either DHCPv6 or IPv6CP. Then what? So far I have yet to
see a configuration using statically assigned IPv6 addressing on
dialer/virtual-template interfaces when using PPPoE that works. I don't get
why we would be REQUIRED to use DHCPv6 or IPv6CP.

On Mon, Sep 28, 2009 at 5:52 PM, Rick Mur <rmur_at_ipexpert.com> wrote:

> The problem we are facing is that the 'global' address of the
> virtual-template is not copied down to the virtual-access interface. Could
> you issue a show ip interface brief and see if that global prefix is in the
> routing table. Because I think it now works with the link-local address on
> R2 and pinging the R1 DHCP address through PPP /32 neighbor-route.
>
>
> --
>
> Regards,
>
> Rick Mur
> CCIE2 #21946 (R&S / Service Provider)
> Sr. Support Engineer  IPexpert, Inc.
> URL: http://www.IPexpert.com
>
> On 28 sep 2009, at 19:02, Rich Collins wrote:
>
> Hi,
>>
>> I did get a ipv6 dhcp version of this to work - I referenced this
>> link:
>>
https://www.cisco.com/en/US/products/ps6553/products_white_paper09186a00801e1
99d.shtml
>>
>> Perhaps there is a way to refine this configuration but it did work for
>> me.
>>
>>
>>
>> R1#sh ver
>> Cisco IOS Software, 3700 Software (C3725-ADVENTERPRISEK9-M), Version
>> 12.4(15)T7, RELEASE SOFTWARE (fc3)
>>
>> R1#sh run
>> Building configuration...
>>
>> Current configuration : 2540 bytes
>> !
>> version 12.4
>> service timestamps debug datetime msec
>> service timestamps log datetime msec
>> no service password-encryption
>> !
>> hostname R1
>> !
>> no ip domain lookup
>> ip multicast-routing
>> ipv6 unicast-routing
>> !
>> !
>> vpdn enable
>> !
>> !
>> !
>> !
>> bba-group pppoe global
>> !
>> !
>> interface FastEthernet0/0
>> no ip address
>> speed auto
>> full-duplex
>> ipv6 address DH-PREFIX 0:0:0:1::/64 eui-64
>> ipv6 enable
>> pppoe enable group global
>> pppoe-client dial-pool-number 1
>> no clns route-cache
>> !
>> !
>> interface Dialer1
>> no ip address
>> ip mtu 1492
>> ip pim sparse-mode
>> encapsulation ppp
>> dialer pool 1
>> dialer idle-timeout 0
>> dialer persistent
>> ipv6 address autoconfig
>> no ipv6 nd ra suppress
>> ipv6 dhcp client pd DH-PREFIX
>> no peer neighbor-route
>> !
>> ip forward-protocol nd
>> !
>> !
>> ipv6 route ::/0 Dialer1
>> !
>>
>> R1#
>>
>>
>> R2#
>> R2#sh run
>> Building configuration...
>>
>> Current configuration : 3342 bytes
>> !
>> version 12.4
>> !
>> hostname R2
>> !
>> aaa session-id common
>> memory-size iomem 5
>> ip cef
>> !
>> !
>> no ip domain lookup
>> ipv6 unicast-routing
>> ipv6 cef
>> ipv6 dhcp pool foo
>> prefix-delegation 2001:7:7::/48 0003000100055FAF2C08
>> prefix-delegation 2001:8:8::/48 0003000100055FAC1808
>> prefix-delegation 2001:8:9::/48 000E0001
>> prefix-delegation 2001:8:A::/48 00030001C20020310000
>> !
>> !
>> !
>> !
>> bba-group pppoe global
>> virtual-template 1
>> !
>> !
>> interface Loopback0
>> ipv6 address 2001:2:2:2::2/64
>> ipv6 enable
>> !
>> interface FastEthernet2/0
>> no ip address
>> speed auto
>> full-duplex
>> ipv6 enable
>> pppoe enable group global
>> !
>> interface Virtual-Template1
>> no ip address
>> ipv6 address 2001:8:A::1/48
>> ipv6 enable
>> no ipv6 nd ra suppress
>> ipv6 dhcp server foo
>> !
>> !
>> no ip forward-protocol nd
>>
>> R2#
>>
>>
>>
>>
>> R1#sh pppoe session interface fastEthernet 0/0
>> 1 client session
>>
>> Uniq ID PPPoE RemMAC Port VT VA
>> State
>> SID LocMAC VA-st
>> N/A 19 c201.2031.0020 Fa0/0 Di1 Vi2 UP
>> c200.2031.0000 UP
>> R1#
>>
>> R2#sh ipv6 dhcp binding
>> Client: FE80::C000:20FF:FE31:0
>> DUID: 00030001C20020310000
>> Interface : Virtual-Access2.1
>> IA PD: IA ID 0x000E0001, T1 302400, T2 483840
>> Prefix: 2001:8:A::/48
>> preferred lifetime 604800, valid lifetime 2592000
>> expires at Mar 31 2002 01:36 AM (2591347 seconds)
>> R2#
>>
>>
>>
>> R1#ping ipv6 2001:2:2:2::2
>>
>> Type escape sequence to abort.
>> Sending 5, 100-byte ICMP Echos to 2001:2:2:2::2, timeout is 2 seconds:
>> !!!!!
>> Success rate is 100 percent (5/5), round-trip min/avg/max = 16/16/16 ms
>> R1#
>>
>>
>> Hints:
>>
>> R1# clear pppoe all
>> R1#clear ipv6 dhcp client dialer 1 (to flush the dhcp address necessary
>> even after clearing pppoe session)
>>
>>
>> R1#sh ipv6 dhcp interface
>> Dialer1 is in client mode
>> State is OPEN
>> Renew will be sent in 3d11h
>> List of known servers:
>> Reachable via address: FE80::C001:20FF:FE31:0
>>
>> DUID: 00030001C20120310000 >>>>>>use this for dhcp pool in server<<<<<<
>>
>> Preference: 0
>> Configuration parameters:
>> IA PD: IA ID 0x000E0001, T1 302400, T2 483840
>> Prefix: 2001:8:A::/48
>> preferred lifetime 604800, valid lifetime 2592000
>> expires at Mar 31 2002 01:36 AM (2591811 seconds)
>> Information refresh time: 0
>> Prefix name: DH-PREFIX
>> Rapid-Commit: disabled
>> R1#
>>
>>
>>
>> -Rich
>>
>> On Sat, Sep 26, 2009 at 6:41 PM, Joe Astorino <jastorino_at_ipexpert.com>
>> wrote:
>>
>>> Did anybody ever get IPv6 to function properly over a PPPoE link? If so,
>>> can you please share ?
>>>
>>> On Wed, Sep 2, 2009 at 2:10 AM, Joe Astorino <jastorino_at_ipexpert.com>
>>> wrote:
>>>
>>> Has anybody successfully set this up?
>>>>
>>>> Basically, on the PPPoE server side, when I assign my ipv6 address to
>>>> the
>>>> virtual-template interface you can see it , but the router never adds a
>>>> route for it in the routing table. On the client end of the PPPoE
>>>> things
>>>> seem to work fine using the dialer interface. Interestingly enough, I
>>>> see
>>>> IPv6CP negotiating OK in the debugs, and I can actually see the
>>>> link-local
>>>> address of the other side in "show ipv6 neighbor" but no ping to the
>>>> other
>>>> side global address. I've even tried ipv6 unnumbered with no luck.
>>>>
>>>> Also, it works totally fine for IPv4...I have enabled ipv6
>>>> unicast-routing
>>>> of course, and also ipv6 cef just in case. I am running 12.4(24)T1 and
>>>> have
>>>> also tried this on 12.4(3a)
>>>>
>>>> basically I have below:
>>>>
>>>> Server
>>>> ----------
>>>>
>>>> vpdn enable
>>>> bba-group pppoe global
>>>> virtual-template 1
>>>>
>>>> interface FastEthernet0/0
>>>> no ip address
>>>> duplex auto
>>>> speed auto
>>>> pppoe enable group global
>>>>
>>>> interface Virtual-Template1
>>>> mtu 1492
>>>> ip address 141.41.67.6 255.255.255.0
>>>> ipv6 address 2001:0:0:67::6/64
>>>> ipv6 enable
>>>>
>>>>
>>>> Client
>>>> --------
>>>>
>>>> interface FastEthernet0/0
>>>> no ip address
>>>> duplex auto
>>>> speed auto
>>>> pppoe enable group global
>>>> pppoe-client dial-pool-number 1
>>>>
>>>> interface Dialer1
>>>> mtu 1492
>>>> ip address dhcp
>>>> encapsulation ppp
>>>> dialer pool 1
>>>> dialer idle-timeout 0
>>>> dialer persistent
>>>> ipv6 address FE80::7 link-local
>>>> ipv6 address 2001:0:0:67::7/64
>>>> ipv6 enable
>>>>
>>>>
>>>> so check this out...
>>>>
>>>> R6(config-if)#do sh run int virtual-template1
>>>> Building configuration...
>>>>
>>>> Current configuration : 128 bytes
>>>> !
>>>> interface Virtual-Template1
>>>> mtu 1492
>>>> ip address 141.41.67.6 255.255.255.0
>>>> ipv6 address 2001:0:0:67::6/64
>>>> ipv6 enable
>>>> end
>>>>
>>>> R6(config-if)#do sh ipv6 route
>>>> IPv6 Routing Table - Default - 10 entries
>>>> Codes: C - Connected, L - Local, S - Static, U - Per-user Static route
>>>> B - BGP, M - MIPv6, R - RIP, I1 - ISIS L1
>>>> I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary, D - EIGRP
>>>> EX - EIGRP external
>>>> O - OSPF Intra, OI - OSPF Inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
>>>> ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
>>>> R 2001::2/128 [120/2]
>>>> via FE80::2, Serial0/1/0
>>>> R 2001::5/128 [120/3]
>>>> via FE80::2, Serial0/1/0
>>>> LC 2001::6/128 [0/0]
>>>> via Loopback6, receive
>>>> C 2001::256:0/125 [0/0]
>>>> via Serial0/1/0, directly connected
>>>> L 2001::256:6/128 [0/0]
>>>> via Serial0/1/0, receive
>>>> C 2001:0:0:69::/64 [0/0]
>>>> via Serial0/2/0, directly connected
>>>> L 2001:0:0:69::6/128 [0/0]
>>>> via Serial0/2/0, receive
>>>> C 2001:0:0:70::/64 [0/0]
>>>> via Serial0/2/1, directly connected
>>>> L 2001:0:0:70::6/128 [0/0]
>>>> via Serial0/2/1, receive
>>>> L FF00::/8 [0/0]
>>>> via Null0, receive
>>>>
>>>> R6(config-if)#do ping 2001:0:0:67::7
>>>>
>>>> Type escape sequence to abort.
>>>> Sending 5, 100-byte ICMP Echos to 2001:0:0:67::7, timeout is 2 seconds:
>>>>
>>>> % No valid route for destination
>>>> Success rate is 0 percent (0/1)
>>>>
>>>> --
>>>> Regards,
>>>>
>>>> Joe Astorino - CCIE #24347 R&S
>>>> Technical Instructor - IPexpert, Inc.
>>>> Cell: +1.586.212.6107
>>>> Fax: +1.810.454.0130
>>>> Mailto: jastorino_at_ipexpert.com
>>>>
>>>>
>>>
>>>
>>> --
>>> Regards,
>>>
>>> Joe Astorino - CCIE #24347 R&S
>>> Technical Instructor - IPexpert, Inc.
>>> Cell: +1.586.212.6107
>>> Fax: +1.810.454.0130
>>> Mailto: jastorino_at_ipexpert.com
>>>
>>>
>>> Blogs and organic groups at http://www.ccie.net
>>>
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>>
>>
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>>
>>
>

--
Regards,
Joe Astorino - CCIE #24347 R&S
Technical Instructor - IPexpert, Inc.
Cell: +1.586.212.6107
Fax: +1.810.454.0130
Mailto:  jastorino_at_ipexpert.com
Blogs and organic groups at http://www.ccie.net