From: Edwards, Andrew M (andrew.m.edwards@boeing.com)
Date: Thu Feb 17 2005 - 14:02:41 GMT-3
Curious what the groups thoughts are on this....
Aren't most of the ALG items for IPv6 12.3 train implementations?
________________________________
From: asadovnikov [mailto:asadovnikov@comcast.net]
Sent: Mon 2/14/2005 7:30 PM
To: 'kinwai'; 'ccie2be'
Cc: ccielab@groupstudy.com
Subject: RE: ipv6 neighbor solicitation
And here is how to configure it:
http://www.cisco.com/en/US/partner/products/sw/iosswrel/ps5187/products_conf
iguration_guide_chapter09186a00801d65f5.html#wp1126687
The example shows router configured as both DHCP server and the actual IPv6
router, but certainly the server can be remote. The command "ipv6 nd
other-config-flag"(http://www.cisco.com/univercd/cc/td/doc/product/software/
ios123/123cgcr/ipv6_r/ipv6_07g.htm#wp1921566) is the key here as it tells
the host to go to DHCP server for more information after the IPv6 address is
obtained via stateless configuration. So the DNS info can be pulled from
the DHCP server.
Best Regards,
Alexei
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
kinwai
Sent: Monday, February 14, 2005 12:17 PM
To: ccie2be
Cc: ccielab@groupstudy.com
Subject: Re: ipv6 neighbor solicitation
According to rfc3736
To obtain configuration parameters through stateless DHCP, a node uses the
DHCP Information-request message. DHCP servers respond to the node's
message with a Reply message that carries configuration parameters for the
node. The Reply message from the server can carry configuration
information, such as a list of DNS recursive name servers [3] and SIP
servers [5].
http://www.tahi.org/conformance/ct-profile-host/dd/DDDHCPv6.html
this should be how the process looks like =)
--- ccie2be <ccie2be@nyc.rr.com> wrote:
> Hi Kinwai,
>
> Thanks for getting back to me but you didn't clear up my problem.
>
> Please see in-line comments.
> ----- Original Message -----
> From: "kinwai" <kinwai@singnet.com.sg>
> To: "ccie2be" <ccie2be@nyc.rr.com>
> Cc: "Group Study" <ccielab@groupstudy.com>
> Sent: Monday, February 14, 2005 11:51 AM
> Subject:
Re: ipv6 neighbor solicitation
>
>
> > R1 will send a NS(ICMPv6 Type 135) to R2
> > Source address of himself... destination will be a
> (Solicitied-note
> mulitcast) which will copy the last 24 bits of the destination R2(or
> a
> host?)
> >
> > When you want to send to R2 or any other host, you will know the
> destination ipv6 address in the first place.
> ******************
> How does host1 (or any sender) find out the ipv6 destination address
> of host
> 2 in the first place? I assume it's via DNS, but if so, how does
> host1 find
> out the iv6 address of the DNS server if autoconfig is being used?
>
> Thanks, Tim
>
> ********************
> >
> > Source mac address as usual. Destination mac will be a standard
> mac
> address of 33:33:FF:01:00:0B.
> >
> > All the routers will listen to it and respond by default.
> >
> > sh ipv6 interface output
> > -----
> > GigabitEthernet0/1 is up, line protocol is up
> > IPv6 is enabled, link-local address is FE80::201:FF:FE01:1
> > Description: ***
> > Global unicast address(es):
> > 2001:1::1, subnet is 2001:1::/64
> > Joined group address(es):
> > FF02::1 (interface-local, link local level)
> > FF02::2 (link-local, link local level )
> > FF02::1:FF00:1 (solicated-node muliticast also,auto enable)
> > FF02::1:FF01:1 (this is the one!!)
> > ------
> >
> >
> > --- ccie2be <ccie2be@nyc.rr.com> wrote:
> >
> > > Hi guys,
> > >
> > > I'm trying to understand the NS process used in ipv6 but so far,
> I
> > > haven't
> > > found a complete explanation.
> > >
> > > In particular, I know that when an ipv6 host wants to
> communicate
> > > with another
> > > ipv6 on the same local-link but doesn't have the address of
> that
> > > other host,
> > > it sends a Neighbor Solicitation message to that other host.
> For
> > > this
> > > message, it creates the destination ipv6 address by
> concatenating
> > > the last 24
> > > bits of the neighbor's ipv6 to a 104 bit multicast address.
> > >
> > > What I don't understand is from where would the host find it's
> > > neighbor's ipv6
> > > address? I assume for this it uses DNS, but how does it get
> the
> > > ipv6 address
> > > of the DNS server assuming it's using stateless
> autoconfiguration?
> > >
> > > If someone can explain this process, I would be greatly
> > > appreciative.
> > >
> > > TIA, Tim
> > >
> > >
> _______________________________________________________________________
> > > Subscription information may be found at:
> > > http://www.groupstudy.com/list/CCIELab.html
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