IPv6 issue









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I have got small IPv6 issue and need some help.. I want to configure IPv6 between 2621xm’s & 3550 switch. The requirement is to configure RIPng between R5, SW2  & R6; but I ping my nexthop IPv6 address.

 

I have configured VLAN 56 on switch and also created SVI interface for VLAN56.

 

 

R6

ipv6 unicast-routing

!

interface FastEthernet0/1

 no ip address

 speed 100

 full-duplex

 ipv6 address 56:1::6/64

 ipv6 address FE80::6 link-local

ipv6 enable

!

 

SW2

ipv6 unicast-routing

!

interface Vlan56

 no ip address

 ipv6 address 56:1::102/64

 ipv6 address FE80::21 link-local

 ipv6 enable

!

!

interface FastEthernet0/6

 switchport access vlan 56

 switchport mode dynamic desirable

 speed 100

 duplex full

!

 

 

R6#ping ipv6 56:1::102 rep 2

 

Type escape sequence to abort.

Sending 2, 100-byte ICMP Echos to 56:1::102, timeout is 2 seconds:

 

*Mar 23 06:04:01.887: IPv6: SAS picked source 56:1::6 for 56:1::102 (FastEthernet0/1)

*Mar 23 06:04:01.887: IPV6: source 56:1::6 (local)

*Mar 23 06:04:01.887:       dest 56:1::102 (FastEthernet0/1)

*Mar 23 06:04:01.887:       traffic class 0, flow 0x0, len 100+0, prot 58, hops 64, originating

*Mar 23 06:04:01.887: ICMPv6-ND: DELETE -> INCMP: 56:1::102

*Mar 23 06:04:01.891: ICMPv6-ND: Sending NS for 56:1::102 on FastEthernet0/1

*Mar 23 06:04:01.891: IPV6: source 56:1::6 (local)

*Mar 23 06:04:01.891:       dest FF02::1:FF00:102 (FastEthernet0/1)

*Mar 23 06:04:01.891:       traffic class 224, flow 0x0, len 72+8, prot 58, hops 255, originating

*Mar 23 06:04:01.891: IPv6: Sending on FastEthernet0/1

*Mar 23 06:04:01.891: IPv6: Encapsulation failed

*Mar 23 06:04:01.891: IPv6: Resolving next hop 56:1::102 on interface FastEthernet0/1

*Mar 23 06:04:01.891: IPv6: Resolving next hop 56:1::102 on interface FastEthernet0/1

*Mar 23 06:04:02.887: ICMPv6-ND: Sending NS for 56:1::102 on FastEthernet0/1

*Mar 23 06:04:02.887: IPV6: source 56:1::6 (local)

*Mar 23 06:04:02.887:       dest FF02::1:FF00:102 (FastEthernet0/1)

*Mar 23 06:04:02.887:       traffic class 224, flow 0x0, len 72+8, prot 58, hops 255, originating

*Mar 23 06:04:02.887: IPv6: Sending on FastEthernet0/1.

*Mar 23 06:04:03.887: ICMPv6-ND: Sending NS for 56:1::102 on FastEthernet0/1

*Mar 23 06:04:03.887: IPV6: source 56:1::6 (local)

*Mar 23 06:04:03.887:       dest FF02::1:FF00:102 (FastEthernet0/1)

*Mar 23 06:04:03.887:       traffic class 224, flow 0x0, len 72+8, prot 58, hops 255, originating

*Mar 23 06:04:03.887: IPv6: Sending on FastEthernet0/1

*Mar 23 06:04:03.891: IPv6: SAS picked source 56:1::6 for 56:1::102 (FastEthernet0/1)

*Mar 23 06:04:03.891: IPV6: source 56:1::6 (local)

*Mar 23 06:04:03.891:       dest 56:1::102 (FastEthernet0/1)

*Mar 23 06:04:03.891:       traffic class 0, flow 0x0, len 100+0, prot 58, hops 64, originating

*Mar 23 06:04:03.891: IPv6: Encapsulation failed

*Mar 23 06:04:03.891: IPv6: Resolving next hop 56:1::102 on interface FastEthernet0/1

*Mar 23 06:04:03.891: IPv6: Resolving next hop 56:1::102 on interface FastEthernet0/1

*Mar 23 06:04:04.887: ICMPv6-ND: INCMP deleted: 56:1::102

*Mar 23 06:04:04.887: ICMPv6-ND: INCMP -> DELETE: 56:1::102.

Success rate is 0 percent (0/2)

R6#

 

 

Newcastle-R6#

*Mar 23 05:56:54.411: ICMPv6-ND: Sending RA to FF02::1 on FastEthernet0/1

*Mar 23 05:56:54.411: ICMPv6-ND:     MTU = 1500

*Mar 23 05:56:54.411: ICMPv6-ND:     prefix = 56:1::/64 onlink autoconfig

*Mar 23 05:56:54.411: ICMPv6-ND:             2592000/604800 (valid/preferred)

*Mar 23 05:57:52.083: ICMPv6-ND: Received RA from FE80::5 on FastEthernet0/1

*Mar 23 05:58:17.811: ICMPv6-ND: Received RA from FE80::21 on FastEthernet0/1

*Mar 23 05:59:52.991: ICMPv6-ND: Sending RA to FF02::1 on FastEthernet0/1

*Mar 23 05:59:52.991: ICMPv6-ND:     MTU = 1500

*Mar 23 05:59:52.991: ICMPv6-ND:     prefix = 56:1::/64 onlink autoconfig

*Mar 23 05:59:52.991: ICMPv6-ND:             2592000/604800 (valid/preferred)

*Mar 23 06:00:26.187: ICMPv6-ND: Received RA from FE80::5 on FastEthernet0/1

 

Looking at debug I can see “IPv6: Encapsulation failed” but can’t figure out why? I have tried static neighbor configuration but still having same issue. I can’t see SW2 as my neighbor..!!!!

 

I am aware 3560 need to be enabled for IPv6 but not sure what needs to be done on 3550.  I am relatively new to IPv6 technology hence struggling.. could someone please help me?  


Thanks

WBC

 

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