[support] Destination Unreachable for BU

[Sebastien Decugis]

Hello,

Does the RA daemon (radvd) runs on your HA?
I assume that the 2001:a:f:1::1000 address is actually configured on 
your HA's eth2 interface. Did you also activate IPv6 forwarding? Without 
your mip6d daemon running, can you ping your HA address 
(2001:a:f:1::1000) from your AR1 or AR2?

Hope these checks will help you solving your problem...

Best regards,
Sebastien.


Chulhyun Park a écrit :
> Hi. I'm Park.
> I'm suffering from the problem that HA doesn't recognize bu from MR.
> The test network diagram is like below.
>
>
>
>          MNN1                  MNN2
>           |                      |
>           +---------+  +---------+
>  MNP1               |  | MNP2
>  2001:a:f:2::/64    |  | 2001:a:f:3::/64
>                     |  |
>                      MR
>                     |  |
>  Access Network 1   |  |  Access network 2
>  2001:a:c:1::/64    |  |  2001:a:d:1::/64
>                     |  |
>               +-----+  +-----+
>               |              |
>              AR1            AR2
>               |              |
>               +-----+  +-----+
>  2001:a:a:1::/64    |  |  2001:a:a:2::/64
>                    Router
>                     |  |
>  2001:a:e:1::/64    |  |  2001:b:a:1::/64
>               +-----+  +-----+
>               |              |
>               HA             CN
>    HA's ETH2 |
>           ----+----- Home Link : 2001:a:f:1::/64
>
>
> MR has four interfaces, two are connected to two separated mobile network,
> and two are connected to different two access networks, access network 1 and 2.
>
> When MR boots up at the foreign network, it recognizes that it is in
> foreign network
> and sends two binding updates to HA (2001:a:f:1::1000) for each CoA
> from AN1 and AN2.
> But HA cannot receive any binding updates from the MR.
>
> I tried to tcpdump packet at all machines, AR1 or AR2 and Router and HA.
> I could find binding update packets destined to the HA
> (2001:a:f:1::1000), even at the HA itself.
> Moreover, I also could see ICMPv6 destination address unreachable
> message from HA to a CoA of MR.
> HA can ping to the CoA of the MR, and as I connected another machine
> beyond AR1 then
> from that machine I also can ping to the HA. So it doesn't seem to be
> a routing problem.
>
> I included my configuration for HA and MR. Would you find a problem
> with my configuration?
>
> -----------------
>   HA mip6d.conf
> -----------------
>
> NodeConfig HA;
> DebugLevel 1;
> Interface "eth2";
> HaAcceptMobRtr enabled;
> HaAcceptMCoAReg enabled;
>
>
> # Disable MPS/MPA
> SendMobPfxAdvs enabled;
> SendUnsolMobPfxAdvs enabled;
>
> # MNP configuration
> HaServedPrefix 2001:a:f:1::/64;
> BindingAclPolicy 2001:a:f:1::1 (2001:a:f:2::/64, 2001:a:f:3::/64) MCoAReg allow;
> DefaultBindingAclPolicy allow;
>
>
> # IPsec configuration - NO IPSEC AT THE MOMENT
> UseMnHaIPsec disabled;
> KeyMngMobCapability disabled;
>
> # EOF
>
>
>
> -----------------
>   MR mip6d.conf
> -----------------
>
> NodeConfig MN;
> DebugLevel 10;
> DoRouteOptimizationCN disabled;
> DoRouteOptimizationMN disabled;
> SendMobPfxSols enabled;
> UseCnBuAck enabled;
>
> # We use Explicit Mode
> MobRtrUseExplicitMode enabled;
> OptimisticHandoff enabled;
>
> # The Binding Lifetime, for example 20 seconds
> MnMaxHaBindingLife 20;
>
> Interface "eth0" {
>     Bid 100;
>     BidPriority 20;
>     Reliable true;
> }
>
>
> Interface "eth1" {
>     Bid 101;
>     BidPriority 10;
>     Reliable true;
> }
>
> # Replace eth0 with your egress interface
> MnHomeLink "eth0" {
>     IsMobRtr enabled;
>     HomeAgentAddress 2001:a:f:1::1000;
>     HomeAddress 2001:a:f:1::1/64 (2001:a:f:2::/64, 2001:a:f:3::/64);
>     RegMultipleCoA enabled;
>     IfMultipleCoA "eth0", "eth1";
> }
>
> # IPsec configuration - NO IPSEC AT THE MOMENT
> UseMnHaIPsec disabled;
> KeyMngMobCapability disabled;
> # EOF
>
>
> Chulhyun Park, Ph.D Student
> Multimedia and Mobile Communication Lab.
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