IPv6 - PPPOE Login with Cisco 886

[Harald Singer]

On Mon, 10 Jan 2011 22:00:53 +1030, Mark Smith
<nanog at 85d5b20a518b8f6864949bd940457dc124746ddc.nosense.org> wrote:


>> (This config works well with an Cisco 836!)
>>
>>
>> PPP protocol negotiation debugging tells me:
>>
>> ...
>> Jan 10 10:26:06.588 CET: Vi2 PPP: Phase is FORWARDING, Attempting
>> Forward
>> Jan 10 10:26:06.588 CET: Vi2 PPP: Queue IPCP code[1] id[1]
>> Jan 10 10:26:06.588 CET: Vi2 PPP: Queue IPV6CP code[1] id[1]
>> Jan 10 10:26:06.592 CET: Vi2 PPP: Phase is ESTABLISHING, Finish LCP
>> Jan 10 10:26:06.592 CET: Vi2 PPP: Phase is UP
>> Jan 10 10:26:06.592 CET: Vi2 PPP: Process pending ncp packets
>> Jan 10 10:26:06.592 CET: Vi2 IPCP: Redirect packet to Vi2
>> Jan 10 10:26:06.592 CET: Vi2 IPCP: I CONFREQ [UNKNOWN] id 1 len 10
>> Jan 10 10:26:06.592 CET: Vi2 IPCP:    Address 192.168.1.13
>> (0x0306D918C00D)
>> Jan 10 10:26:06.592 CET: Vi2 LCP: O PROTREJ [Open] id 3 len 16
>> protocol IPCP (0x0101000C0306D918C00D)
>> Jan 10 10:26:06.592 CET: Vi2 IPV6CP: Redirect packet to Vi2
> 
> Looks like either your PPP peer is broken, or the link between them, as
> the following seems to indicate your end received an IPv6CP option that
> it didn't understand (there is only one for IPV6CP - Interface
> Identifier), and your end is therefore giving up. Same as for IPCP.
> Perhaps comparing the debug output of PPP working on 836 might help
> troubleshoot it.

The IPCP Reject is because the BRAS offers an IPv4 address which i
don't need.

This is the same debug at my 836:


CISCO 836   .319 CET: Vi2 PPP: Phase is FORWARDING, Attempting Forward
CISCO 836   .323 CET: Vi2 PPP: Queue IPV6CP code[1] id[1]
CISCO 836   .323 CET: Vi2 PPP: Queue IPCP code[1] id[1]
CISCO 836   .383 CET: Vi2 PPP SSS: Receive SSS-Mgr Connect-Local
CISCO 836   .383 CET: Vi2 PPP: Phase is ESTABLISHING, Finish LCP
CISCO 836   .387 CET: Vi2 PPP: Phase is UP
CISCO 836   .387 CET: Vi2 IPV6CP: O CONFREQ [Closed] id 1 len 14
CISCO 836   .387 CET: Vi2 IPV6CP:    Interface-Id 0212:80FF:FE7A:6728
(0x010A021280FFFE7A6728)
CISCO 836   .391 CET: Vi2 PPP: Process pending ncp packets
CISCO 836   .391 CET: Vi2 IPCP: Redirect packet to Vi2
CISCO 836   .391 CET: Vi2 IPCP: I CONFREQ [Not negotiated] id 1 len 10
CISCO 836   .391 CET: Vi2 IPCP:    Address 217.24.192.13
(0x0306D918C00D)
CISCO 836   .391 CET: Vi2 LCP: O PROTREJ [Open] id 3 len 16 protocol
IPCP (0x80210101000A0306D918C00D)
CISCO 836   .395 CET: Vi2 IPV6CP: Redirect packet to Vi2
CISCO 836   .395 CET: Vi2 IPV6CP: I CONFREQ [REQsent] id 1 len 14
CISCO 836   .395 CET: Vi2 IPV6CP:    Interface-Id 021C:0FFF:FE38:381B
(0x010A021C0FFFFE38381B)
CISCO 836   .395 CET: Vi2 IPV6CP: O CONFACK [REQsent] id 1 len 14
CISCO 836   .395 CET: Vi2 IPV6CP:    Interface-Id 021C:0FFF:FE38:381B
(0x010A021C0FFFFE38381B)
CISCO 836   .427 CET: Vi2 IPV6CP: I CONFACK [ACKsent] id 1 len 14
CISCO 836   .431 CET: Vi2 IPV6CP:    Interface-Id 0212:80FF:FE7A:6728
(0x010A021280FFFE7A6728)
CISCO 836   .431 CET: Vi2 IPV6CP: State is Open
CISCO 836   .387 CET: %LINEPROTO-5-UPDOWN: Line protocol on Interface
Virtual-Access2, changed state to up


BTW, i have access to the BRAS if this will help.