Cisco 867VAE IPv6 over PPPoA/PPPoE (IPV6CP)

Answered Question
Apr 9th, 2012
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Hi,


my ISP is offering native IPv6 ADSL, so i get a brand new Cisco 867VAE ISR to do IPv6 over PPPoA/PPPoE, via IPV6CP


C867VAE (CISCO867VAE-K9) come with "ADVANCED SECURITY" level, IOS 15.1

system image file is "flash:c860vae-advsecurityk9-mz.151-4.M3.bin"

that's the highest license level, since "ADVANCED IP SERVICES" seems not available for 860VAE models


so i checked "Cisco Feature Navigator" where i can see that for platform Cisco 867VAE,

the following features are "available" :

IPv6 Access Services: PPPoA

IPv6 Access Services: PPPoE


but i'm afraid C867VAE, with IOS "ADVANCED SECURITY", doesn't support IPV6CP,

(and i see DHCPv6 is not present anyway), can someone help me to confirm ?


IPv4 is working fine, but no IPV6CP negotiation during PPP (see my config extract below)

"debug ppp nego" doesn't show any IPV6CP at all, only got this persistent error in show log :

-

000422: *Apr  6 07:28:21.817 CEST: Vi2 PPP: Outbound ipv6 packet dropped, NCP not negotiated

-


so can Cisco 867VAE really do IPv6 over PPPoA/PPPoE throughout IPV6CP ?

or did i forgot any command to activate/allow it ?


Thanks for you help


Olivier


----


relevant part of my configuration :


!

ipv6 unicast-routing

no ipv6 source-route

ipv6 cef

ipv6 route ::/0 Dialer0

!

interface ATM0.1 point-to-point

ip flow ingress

pvc 8/35

  encapsulation aal5mux ppp dialer

  dialer pool-member 1

!

interface Dialer0

ip address negotiated

ip access-group internet_in in

ip mtu 1452

ip nat outside

ip virtual-reassembly in

encapsulation ppp

dialer pool 1

dialer-group 1

ipv6 address autoconfig

ipv6 enable

ppp authentication chap callin

ppp chap hostname [email protected]

ppp chap password xxxxx

!

dialer-list 1 protocol ipv6 permit

Correct Answer by Scott Pettit about 5 years 2 months ago

Hi Olivier,


TAC have confirmed it's a bug and opened a new bug for this.


When this happens I ususally end up waiting 3 months + for a resolution, so if you want to see this move faster you'll need to open a TAC case also referencing bug

CSCua08876


-Scott

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fb_webuser Mon, 04/09/2012 - 14:11
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From your output, the ipv6 packet is dropped outbound.

no input from debug ppp nego, so it doesn´t even try to negotiate.

try putting the interface as native ipv6, removing the acl, and ip address negotiated, you have ipv6 autoconfig.

your isp is offering native ipv6, not dual stack.

About the IOS, try upgrading for the latest release, like the 15.2(3)T, advanced security.

please if you fix it, i would like to know.

Thanks


---

Posted by WebUser Pedro Seabra Ávila from Cisco Support Community App

olivier.dijoux Wed, 04/11/2012 - 12:25
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Thanks, I tried,

also upgraded to latest IOS 15.2(3)T Advanced Security (c860vae-advsecurityk9-mz.152-3.T),

but still no IPV6CP at all in "debug ppp nego"


for now, i'll stay with my IPv6 Tunnel Broker ...


if someone know if PPP IPV6CP is possible (or not) on C867VAE ISR, please advise


Thanks for you help


Olivier

Scott Pettit Wed, 05/16/2012 - 04:20
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Hi Olivier,


I've done some testing and I can get an 887VA working fine with IPv6 (running IOS 15.1(4)M4).  If I use the identical configuration on 867VAE with IOS 15.1(4)M4 - it does not work.


I've logged a TAC case about this as it looks like a bug to me.


-Scott

olivier.dijoux Wed, 05/16/2012 - 04:43
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Hi Scott,


thanks, please keep me informed when you got more info about your TAC case


best regards


Olivier

Correct Answer
Scott Pettit Thu, 05/24/2012 - 16:08
User Badges:

Hi Olivier,


TAC have confirmed it's a bug and opened a new bug for this.


When this happens I ususally end up waiting 3 months + for a resolution, so if you want to see this move faster you'll need to open a TAC case also referencing bug

CSCua08876


-Scott

rbevaart Wed, 05/30/2012 - 04:12
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I'm running into the same problem - but next to that it appears that there is also no way to do prefix-delegation as a client) on the box. The neccesary commands under the dialer interface are missing... "ipv6 dhcp pd " is not there, neither is "ipv6 dhcp pool <...>"


Nice box, but these features need to be added, any other 8xx box runs this just fine on 12.4.

olivier.dijoux Tue, 09/11/2012 - 12:49
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an update to say that bug CSCua08876 is fixed in IOS release "15.1.4M5" released 06/Sep/2012


IPV6CP now working fine on C867VAE


now missing ipv6 dhcp pd ;-)


Olivier

rbevaart Tue, 09/11/2012 - 13:08
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IPv6 DHCP PD is working fine in :


Cisco IOS Software, C860 Software (C860VAE-ADVSECURITYK9-M), Version 15.2(4)M1, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2012 by Cisco Systems, Inc.

Compiled Fri 27-Jul-12 02:47 by prod_rel_team


config:

interface XYZ

ipv6 dhcp client pd myprefix rapid-commit

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