Connect Switch3560 and Switch2960 with ipv6 in CPT

[dakai.yan@dallasgrp.com]

Cisco2960:

interface Vlan6

no ip address

ipv6 address 2001:DB8:0:22::3/64

ipv6 enable

interface FastEthernet0/24

switchport mode trunk

ipv6 unicast-routing

Cisco3560:

interface Vlan6

mac-address 0001.64ba.ba02

no ip address

ipv6 address 2001:DB8:0:22::2/64

ipv6 enable

interface FastEthernet0/24

switchport trunk encapsulation dot1q

switchport mode trunk

ipv6 unicast-routing

When I connected 3560 and 3560 with ipv6, it can ping, but it failed when I connect 3560 and 2960. Why?

[balaji.bandi]

but it failed when I connect 3560 and 2960. Why?

what do you mean connect ? ssh / telnet ? do you have vty lines configured for going out ?

what error you getting ?

[dakai.yan@dallasgrp.com]

I can ping 3560 from multilayer 3560 with ipv6 address. But I can't ping 3560 from 2960.

[balaji.bandi]

But I can't ping 3560 from 2960.

i take this as a normal 3560 not multi-layered. check is the interface is up. post-show run, show interface status, also check show cdp neigh

[dakai.yan@dallasgrp.com]

delete

[dakai.yan@dallasgrp.com]

1、3560-24PS SWITCH configuration:

Current configuration : 1570 bytes

version 12.2

no service timestamps log datetime msec

no service timestamps debug datetime msec

no service password-encryption

hostname Switch3560

ip routing

ipv6 unicast-routing

spanning-tree mode pvst

interface FastEthernet0/1

interface FastEthernet0/24

switchport trunk encapsulation dot1q

switchport mode trunk

interface GigabitEthernet0/1

switchport trunk encapsulation dot1q

switchport mode trunk

interface GigabitEthernet0/2

switchport access vlan 5

interface Vlan1

no ip address

shutdown

interface Vlan5

mac-address 0001.64ba.ba01

no ip address

ipv6 address 2001:DB8:0:21::3/64

ipv6 enable

interface Vlan6

mac-address 0001.64ba.ba02

no ip address

ipv6 address 2001:DB8:0:22::2/64

ipv6 enable

ip classless

ip flow-export version 9

2、3560-24PS MultiLayer switch0 configuration:

version 12.2

no service timestamps log datetime msec

no service timestamps debug datetime msec

no service password-encryption

hostname Switch

ipv6 unicast-routing

spanning-tree mode pvst

 interface FastEthernet0/1

 interface GigabitEthernet0/1

 interface GigabitEthernet0/2

 interface Vlan1

 no ip address

 shutdown

interface Vlan5

 mac-address 000a.f35b.ee01

 no ip address

 ipv6 address 2001:DB8:0:21::4/64

 ipv6 enable

ip classless

ip flow-export version 9

3、2960-24TT Switch0 configuration:

 hostname Switch

 ipv6 unicast-routing

spanning-tree mode pvst

spanning-tree extend system-id

interface FastEthernet0/1

interface FastEthernet0/24

 switchport mode trunk

interface GigabitEthernet0/1

interface GigabitEthernet0/2

interface Vlan1

 no ip address

 shutdown

interface Vlan6

 no ip address

  ipv6 address 2001:DB8:0:22::3/64

 ipv6 enable

line con 0

[Deepak Kumar]

Can you share "Show ipv6 route" & "Show cdp neighbor"?

[dakai.yan@dallasgrp.com]

Yes, I can show cdp neighbors and show ipv6 route on both 3560 and 2960. But 2960 can't show ipv6 address.

[balaji.bandi]

I am trying to digest your config.

on your 2960 and 3560 what ports connected each other, if you do not config port as trunk default it belong to VLAN1

on gi0/1 up and there is no config - so make sure on 3560 and 2960 configure as expected :

interface GigabitEthernet0/1

switchport trunk encapsulation dot1q

switchport mode trunk

On 2960 you have vlan 6 config, not vlan 5 ? is that correct ?

I repeatedly as this information (your posting piece meal information ) post all the outputs "post-show run, show interface status, also check show cdp neigh"

[dakai.yan@dallasgrp.com]

[balaji.bandi]

how about this information - show interface status, show cdp neigh, show ipv6 interface brief

as per the information before your post - VLAN 5 up and i do not see ipv6 addres ?

[dakai.yan@dallasgrp.com]

Yes, Vlan 5 is up and 2960 inter vlan 5 ip 2001:db8:0:20::3, 3560_0 inter vlan 5 ip 2001:db8:0:20::2, 3560_1 inter vlan 5 ip 2001:db8:0:20::4. 

[balaji.bandi]

if the interface up, it should work as expected.

i would wipe the 2960 node (since this is lab, redo the task again and check)

next time you need to post more evidance, since we can not read what was configured how the status of the interface (if you looking active help)

[dakai.yan@dallasgrp.com]

The same configuration on both catalyst3560 and they can ping mutually. 

I do not think the catalyst 2960 support ipv6 on Cisco packet tracer.

Thanks for your help.

[balaji.bandi]

not sure if that is limitation of PT

why not replace 2960 with 3560 and test it ? - is that works  ?

also check below thread help you :

https://community.cisco.com/t5/switching/cannot-configure-ipv6-on-2960/td-p/2865055