Re: IPV6 addressing and ICMP

what does your 'show ipv6 neighbors' command look like, pretty standard
config, does the IPv4 work?

On Sun, Dec 13, 2009 at 8:49 PM, Bryan Stair <uptown.ccie_at_gmail.com> wrote:

> To All,
>
> I have a simple IPv6 problem with two ethernet interfaces that I am unable
> to ping one another. I setup two /64 address to two directly ethernet
> interfaces and when I attempt to ping will not work and I am not sure why?
> The IP addresses work fine. Must I do something on the switches
> interconnecting the two. I ran debug ipv6 packet and debug ipv6 icmp and it
> tells me that encapsulation failed???? Can someone shed some light on what
> the problem may be
>
> R3
> ipv6 cef
> !
> ipv6 unicast-routing
> !
> int ethernet0/0
> ip address 139.1.0.3 255.255.255.0
> ipv6 address 2001:CC1E:1:10::3/64
>
> R6
> !
> ipv6 cef
> !
> ipv6 unicast-routing
>
> int ethernet0/1
> ip address 139.1.0.6 255.255.255.0
> ipv6 address 2001:CC1E:1:10::6/64
>
>
> DEBUG OUTPUT
> R3#PING 2001:CC1E:1:10::6
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 2001:CC1E:1:10::6, timeout is 2 seconds:
>
> *Dec 13 17:39:43.111: IPV6: source FE80::2 (Serial2/3)
> *Dec 13 17:39:43.111: dest FF02::5
> *Dec 13 17:39:43.111: traffic class 224, flow 0x0, len 80+4, prot 89,
> hops
> 1, forward to ulp
> *Dec 13 17:39:44.831: IPv6: SAS picked source 2001:CC1E:1:10::3 for
> 2001:CC1E:1:
> 10::6 (Ethernet0/0)
> *Dec 13 17:39:44.831: ICMPv6: Sending echo request to 2001:CC1E:1:10::6
> *Dec 13 17:39:44.831: IPV6: source 2001:CC1E:1:10::3 (local)
> *Dec 13 17:39:44.831: dest 2001:CC1E:1:10::6 (Ethernet0/0)
> *Dec 13 17:39:44.831: traffic class 0, flow 0x0, len 100+0, prot 58,
> hops
> 64, originating
> *Dec 13 17:39:44.831: IPV6: source 2001:CC1E:1:10::3 (local)
> *Dec 13 17:39:44.831: dest FF02::1:FF00:6 (Ethernet0/0)
> *Dec 13 17:39:44.831: traffic class 224, flow 0x0, len 72+8, prot 58,
> hops
> 255, originating
> *Dec 13 17:39:44.831: IPv6: Sending on Ethernet0/0
> **Dec 13 17:39:44.831: IPv6: Encapsulation failed*
> *Dec 13 17:39:44.831: IPv6: Resolving next hop 2001:CC1E:1:10::6 on
> interface Et
> hernet0/0
> *Dec 13 17:39:44.831: IPv6: Resolving next hop 2001:CC1E:1:10::6 on
> interface Et
> hernet0/0
> *Dec 13 17:39:45.831: IPV6: source 2001:CC1E:1:10::3 (local)
> *Dec 13 17:39:45.831: dest FF02::1:FF00:6 (Ethernet0/0)
> *Dec 13 17:39:45.831: traffic class 224, flow 0x0, len 72+8, prot 58,
> hops
> 255, originating
> *Dec 13 17:39:45.831: IPv6: Sending on Ethernet0/0.
> *Dec 13 17:39:46.831: IPV6: source 2001:CC1E:1:10::3 (local)
> *Dec 13 17:39:46.831: dest FF02::1:FF00:6 (Ethernet0/0)
> *Dec 13 17:39:46.831: traffic class 224, flow 0x0, len 72+8, prot 58,
> hops
> 255, originating
> *Dec 13 17:39:46.831: IPv6: Sending on Ethernet0/0
> *Dec 13 17:39:46.831: IPv6: SAS picked source 2001:CC1E:1:10::3 for
> 2001:CC1E:1:
> 10::6 (Ethernet0/0)
> *Dec 13 17:39:46.831: ICMPv6: Sending echo request to 2001:CC1E:1:10::6
> *Dec 13 17:39:46.831: IPV6: source 2001:CC1E:1:10::3 (local)
> *Dec 13 17:39:46.831: dest 2001:CC1E:1:10::6 (Ethernet0/0)
> *Dec 13 17:39:46.831: traffic class 0, flow 0x0, len 100+0, prot 58,
> hops
> 64, originating
> *Dec 13 17:39:46.831: IPv6: Encapsulation failed
> *Dec 13 17:39:46.831: IPv6: Resolving next hop 2001:CC1E:1:10::6 on
> interface Et
> hernet0/0
> *Dec 13 17:39:46.831: IPv6: Resolving next hop 2001:CC1E:1:10::6 on
> interface Et
> hernet0/0
>
>
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-- 
Garry L. Baker
"There is no 'patch' for stupidity." - www.sqlsecurity.com
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