IPv6 Stateless Configuration

Zhao Ping pzhao at live.com
Fri Oct 15 02:35:55 CDT 2010


Pay attention to the special layer 2 multicast address for the RA packet.


On 10/15/10 3:21 PM, "Franck Martin" <franck at genius.com> wrote:

>I have seen layer 2 devices not forwarding IPv6 packets (while forwarding
>IPv4 packets)...
>
>I would put a packet capture, and see if I see the RA packets coming from
>the router.
>
>On a Cisco router, RA is enabled by default and does not require any
>setting.
>
>----- Original Message -----
>From: "Rod James Bio" <rjubio at gmail.com>
>To: "Franck Martin" <franck at genius.com>
>Cc: nanog at nanog.org
>Sent: Friday, 15 October, 2010 7:11:07 PM
>Subject: Re: IPv6 Stateless Configuration
>
>That's my setup right now. The problem is the machine is not configuring
>its IPv6 address with RA already turned on. I'm guessing that the flag
>set on the UTM router advertisement messages is wrong. May I know the
>default flags use on a cisco router? Thanks.
>
>
>On Fri, Oct 15, 2010 at 3:04 PM, Franck Martin < franck at genius.com >
>wrote: 
>
>
>You need all to be part of the same Ethernet network. So if this UTM can
>act as a bridge/switch you should be ok. Otherwise the RA broadcasts need
>to reach your device so it guesses the network and add it's Mac address
>to the network and make an ipv6 address.
>
>I would say RA is a bit like DHCP in your case in terms of network
>topology but beside that RA is simpler (no leases table).
>
>Toute connaissance est une réponse à une question
>
>
>
>
>On 15/10/2010, at 17:49, Rod James Bio < rjubio at gmail.com > wrote:
>
>> Hi, 
>> 
>> First time poster here. I would just like to ask what are the flags on
>> router advertisement to enable a host to autoconfigure its IPv6
>>address. 
>> There is this device that I'm configuring that I cant get RA to work. I
>>was 
>> able to work out the connectivity from the device to the IPv6 internet,
>>but 
>> the problem is host behind this device is not getting its unique global
>>ipv6 
>> address. The device is a cyberoam UTM.
>> 
>> Thanks! Rod Bio.
>
>
>






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