11-24-2022 10:53 PM
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?
11-25-2022 04:57 AM
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 ?
11-26-2022 04:39 AM
I can ping 3560 from multilayer 3560 with ipv6 address. But I can't ping 3560 from 2960.
11-27-2022 11:20 AM
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
11-27-2022 04:44 PM - edited 11-27-2022 05:04 PM
delete
11-27-2022 05:02 PM
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
11-27-2022 09:44 PM
Can you share "Show ipv6 route" & "Show cdp neighbor"?
11-29-2022 07:18 PM
Yes, I can show cdp neighbors and show ipv6 route on both 3560 and 2960. But 2960 can't show ipv6 address.
12-01-2022 01:10 PM
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"
12-06-2022 06:32 AM
12-06-2022 06:56 AM
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 ?
12-06-2022 04:48 PM
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.
12-07-2022 02:19 AM
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)
12-07-2022 06:16 PM
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.
12-08-2022 03:30 AM
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
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