Re: PPPoE with IPv6

From: Rich Collins <nilsi2002_at_gmail.com>
Date: Tue, 29 Sep 2009 11:52:18 -0400

I noticed that I could also discover the DUID with just
Router# sh ipv6 dhcp

Anyway I got the configuration back up and running.
R1 is client and R2 is server

Here is slightly different from yesterday

R2
ipv6 dhcp pool foo
 prefix-delegation 2001:2:2::/48 00030001C20020310000

-----------

R2#sh ipv6 interface brief
FastEthernet0/0 [up/up]
    FE80::C001:46FF:FE05:0
FastEthernet0/0.27 [up/up]
FastEthernet0/1 [administratively down/down]
FastEthernet0/1.28 [administratively down/down]
Serial1/0 [administratively down/down]
Serial1/1 [administratively down/down]
Serial1/2 [up/up]
Serial1/3 [administratively down/down]
FastEthernet2/0 [up/up]
    FE80::C001:46FF:FE05:20
Virtual-Access1 [down/down]
Virtual-Template1 [down/down]
    FE80::C001:46FF:FE05:0
    2001:8:A::1
Virtual-Access2 [up/up]
Virtual-Access2.1 [up/up]
    FE80::C001:46FF:FE05:0
Loopback0 [up/up]
    FE80::C001:46FF:FE05:0
    2001:22:22:22::2
Tunnel28 [up/down]
R2#
R2#

R2#sh ipv6 route
IPv6 Routing Table - 4 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
       U - Per-user Static route, M - MIPv6
       I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary
       O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
       D - EIGRP, EX - EIGRP external
S 2001:2:2::/48 [1/0]
     via FE80::C000:46FF:FE05:0, Virtual-Access2.1
C 2001:22:22:22::/64 [0/0]
     via ::, Loopback0
L 2001:22:22:22::2/128 [0/0]
     via ::, Loopback0
L FF00::/8 [0/0]
     via ::, Null0
R2#

R1#sh ipv6 int brief
FastEthernet0/0 [up/up]
    FE80::C000:46FF:FE05:0
    2001:2:2:1:C000:46FF:FE05:0
FastEthernet0/1 [administratively down/down]
Serial1/0 [up/down]
Serial1/1 [administratively down/down]
Serial1/2 [up/up]
Serial1/3 [administratively down/down]
Virtual-Access1 [up/up]
Virtual-Access2 [up/up]
Dialer1 [up/up]
    FE80::C000:46FF:FE05:0
Loopback0 [up/up]
R1#sh ipv
R1#sh ipv6 rout
R1#sh ipv6 route
IPv6 Routing Table - 5 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
       U - Per-user Static route, M - MIPv6
       I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary
       O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
       ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
       D - EIGRP, EX - EIGRP external
S ::/0 [1/0]
     via ::, Dialer1
S 2001:2:2::/48 [1/0]
     via ::, Null0
C 2001:2:2:1::/64 [0/0]
     via ::, FastEthernet0/0
L 2001:2:2:1:C000:46FF:FE05:0/128 [0/0]
     via ::, FastEthernet0/0
L FF00::/8 [0/0]
     via ::, Null0
R1#

R1#ping ipv6 2001:22:22:22::2 (Loop0 on R2)

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2001:22:22:22::2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 16/16/16 ms
R1#

Debug ICMP on R2
[Resuming connection 2 to R2 ... ]

*Mar 1 01:32:26.259: ICMPv6: Received echo request from
2001:2:2:1:C000:46FF:FE05:0
*Mar 1 01:32:26.263: ICMPv6: Sending echo reply to 2001:2:2:1:C000:46FF:FE05:0
*Mar 1 01:32:26.307: ICMPv6: Received echo request from
2001:2:2:1:C000:46FF:FE05:0
*Mar 1 01:32:26.311: ICMPv6: Sending echo reply to 2001:2:2:1:C000:46FF:FE05:0
*Mar 1 01:32:26.323: ICMPv6: Received echo request from
2001:2:2:1:C000:46FF:FE05:0
*Mar 1 01:32:26.327: ICMPv6: Sending echo reply to 2001:2:2:1:C000:46FF:FE05:0
*Mar 1 01:32:26.339: ICMPv6: Received echo request from
2001:2:2:1:C000:46FF:FE05:0
*Mar 1 01:32:26.343: ICMPv6: Sending echo reply to 2001:2:2:1:C000:46FF:FE05:0
R2#
R2#

-Rich

On Mon, Sep 28, 2009 at 6:44 PM, Rich Collins <nilsi2002_at_gmail.com> wrote:
> I have to admit that I am having a problem repeating my earlier setup.
> The client R1 is not showing the OPEN mode but now always SOLICIT.
>
> R1#sh ipv6 dhcp interface
> Dialer1 is in client mode
> State is SOLICIT (7)
> Retransmission timer expires in 00:00:40
> Rapid-Commit: disabled
>
>
> I can't say though that I have any experience with DHCPv6.
>
> I think though the routing was working as Rick was surmising.
>
> -Rich
>
>
> On Mon, Sep 28, 2009 at 5:59 PM, Joe Astorino <jastorino_at_ipexpert.com> wrote:
>> 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

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Received on Tue Sep 29 2009 - 11:52:18 ART

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