11-07-2024 01:48 AM
Hello,
I'm currently working on a networking task for my vocational training, but I'm struggling with IPv6 setup and static routing. I don’t have much experience with networking, so I'm hoping someone here can help me out.
Network Overview:
In the setup (see attached image), there are:
The task specifies:
Current Issue: The weird part is that only one router at a time can successfully ping its connected devices (clients and switch gateway). When I turn both routers off and then turn them back on, only the router I start first works correctly (for example, if I start Router HH first and then Router HL, Router HH can ping its clients and gateway). However, the other router is unable to ping any devices and receives timeouts for all ping attempts.
I suspect there may be an issue with the configuration or possibly a conflict between the routers, but I'm not sure what could be causing it. Any advice on what to check or reconfigure would be greatly appreciated!
Running Config Router HH:
RT-HH-01#show running-config
Building configuration...
Current configuration : 1202 bytes
!
version 15.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname RT-HH-01
!
!
!
!
!
!
!
!
ip cef
ipv6 unicast-routing
!
no ipv6 cef
!
!
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface GigabitEthernet0/0/0
no ip address
duplex auto
speed auto
ipv6 address FD00:0:1::1/64
!
interface GigabitEthernet0/0/1
no ip address
duplex auto
speed auto
shutdown
!
interface GigabitEthernet0/0/2
no ip address
duplex auto
speed auto
!
interface GigabitEthernet0/0/2.10
encapsulation dot1Q 10
no ip address
ipv6 address 2001:DB8:1:10::1/64
!
interface GigabitEthernet0/0/2.20
encapsulation dot1Q 20
no ip address
ipv6 address 2001:DB8:1:20::1/64
!
interface GigabitEthernet0/2/0
switchport mode access
!
interface GigabitEthernet0/2/1
switchport mode access
!
interface GigabitEthernet0/2/2
switchport mode access
!
interface GigabitEthernet0/2/3
switchport mode access
!
interface Vlan1
no ip address
shutdown
!
ip classless
!
ip flow-export version 9
!
ipv6 route 2001:DB8:4::/48 FD00:0:2::2
ipv6 route 2001:DB8:4::/48 FD00:0:1::2
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
login
!
!
!
end
Running Config Switch Hamburg:
Switch#sho running-config
Building configuration...
Current configuration : 1276 bytes
!
version 15.0
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Switch
!
!
!
!
!
!
spanning-tree mode pvst
spanning-tree extend system-id
!
interface FastEthernet0/1
switchport access vlan 10
switchport mode access
!
interface FastEthernet0/2
switchport access vlan 20
switchport mode access
!
interface FastEthernet0/3
!
interface FastEthernet0/4
!
interface FastEthernet0/5
!
interface FastEthernet0/6
!
interface FastEthernet0/7
!
interface FastEthernet0/8
!
interface FastEthernet0/9
!
interface FastEthernet0/10
!
interface FastEthernet0/11
!
interface FastEthernet0/12
!
interface FastEthernet0/13
!
interface FastEthernet0/14
!
interface FastEthernet0/15
!
interface FastEthernet0/16
!
interface FastEthernet0/17
!
interface FastEthernet0/18
!
interface FastEthernet0/19
!
interface FastEthernet0/20
!
interface FastEthernet0/21
!
interface FastEthernet0/22
!
interface FastEthernet0/23
!
interface FastEthernet0/24
!
interface GigabitEthernet0/1
switchport trunk allowed vlan 10,20
switchport mode trunk
!
interface GigabitEthernet0/2
!
interface Vlan1
no ip address
shutdown
!
interface Vlan10
no ip address
!
!
!
!
line con 0
!
line vty 0 4
login
line vty 5 15
login
!
!
!
!
end
Running Config Router HL:
RT-HL-01#show running-config
Building configuration...
Current configuration : 1208 bytes
!
version 15.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname RT-HL-01
!
!
!
!
!
!
!
!
ip cef
no ipv6 cef
!
!
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface GigabitEthernet0/0/0
no ip address
duplex auto
speed auto
ipv6 address FD00:0:1::2/64
!
interface GigabitEthernet0/0/1
no ip address
duplex auto
speed auto
ipv6 address FD00:0:3::1/64
shutdown
!
interface GigabitEthernet0/0/2
no ip address
duplex auto
speed auto
!
interface GigabitEthernet0/0/2.30
encapsulation dot1Q 30
no ip address
ipv6 address 2001:DB8:2:30::1/64
!
interface GigabitEthernet0/0/2.40
encapsulation dot1Q 40
no ip address
ipv6 address 2001:DB8:2:40::1/64
!
interface GigabitEthernet0/2/0
switchport mode access
!
interface GigabitEthernet0/2/1
switchport mode access
!
interface GigabitEthernet0/2/2
switchport mode access
!
interface GigabitEthernet0/2/3
switchport mode access
!
interface Vlan1
no ip address
shutdown
!
ip classless
!
ip flow-export version 9
!
ipv6 route 2001:DB8:3::/48 FD00:0:1::1
ipv6 route 2001:DB8:3::/48 FD00:0:3::2
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
login
!
!
!
end
Running Config Switch HL:
Switch#show ru
Switch#show running-config
Building configuration...
Current configuration : 1242 bytes
!
version 15.0
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname Switch
!
!
!
!
!
!
spanning-tree mode pvst
spanning-tree extend system-id
!
interface FastEthernet0/1
switchport access vlan 30
switchport mode access
!
interface FastEthernet0/2
switchport access vlan 40
switchport mode access
!
interface FastEthernet0/3
!
interface FastEthernet0/4
!
interface FastEthernet0/5
!
interface FastEthernet0/6
!
interface FastEthernet0/7
!
interface FastEthernet0/8
!
interface FastEthernet0/9
!
interface FastEthernet0/10
!
interface FastEthernet0/11
!
interface FastEthernet0/12
!
interface FastEthernet0/13
!
interface FastEthernet0/14
!
interface FastEthernet0/15
!
interface FastEthernet0/16
!
interface FastEthernet0/17
!
interface FastEthernet0/18
!
interface FastEthernet0/19
!
interface FastEthernet0/20
!
interface FastEthernet0/21
!
interface FastEthernet0/22
!
interface FastEthernet0/23
!
interface FastEthernet0/24
!
interface GigabitEthernet0/1
switchport trunk allowed vlan 30,40
switchport mode trunk
!
interface GigabitEthernet0/2
!
interface Vlan1
no ip address
shutdown
!
!
!
!
line con 0
!
line vty 0 4
login
line vty 5 15
login
!
!
!
!
end
11-07-2024 02:03 AM
Since they’re using the same subnet (FD00:0:1::/64) on this link, confirm that each router has a unique IPv6 address on this interface within that /64 range. For example, on Router HH, it’s FD00:0:1::1/64, and on Router HL, it should be FD00:0:1::2/64. This way, they’ll know how to communicate directly. Each router has some ipv6 route commands, which tell it how to reach networks on the other router. It’s important these routes have the correct “next-hop” IPs. So on Router HH, the command should use Router HL’s interface address (FD00:0:1::2) as the next hop, and Router HL should use FD00:0:1::1 for Router HH. You’ve got the VLAN subinterfaces set up on both routers for each client network (e.g., GigabitEthernet0/0/2.10 and .20 on Router HH). Just make sure that the encapsulation settings match on both sides and that everything aligns with your switch trunk settings. Use show ipv6 neighbors on each router can give you a clear picture of whether they’re recognizing each other. Make sure each router can see the other in its neighbor table and that pings go through as expected
11-07-2024 02:18 PM
attach your pt file here in zip format; also u can use CLN forum for your studies https://learningnetwork.cisco.com/s/discussions
Regards, ML
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