Network has been set but IPv4 refuses to connect, IPv6 seems fine

[Vaco]

I've made a network that has 2 routers configured with 4 different subnets, they're all supposed to interact with eachother through IPv4 and IPv6. I've set up 3 switches, all have the necessary vlan1 and all the other IP addresses are correct. However for some reason despite IPv6 communicating across the network, only IPv4 has issues. I also figured this out when I couldn't ping my own laptops IP address through it's cmdwith IPv4. 

Really having trouble figuring any of this out, I can't check ARP if that helps at all. I'm still a beginner and figuring this stuff out on your own is hard, any help is appreciated.  

[marce1000]

              - FYI : Community group for Packet Tracer project questions

 M.

[Vaco]

Appreciate that, I'll post it there aswell, I'm new here.

[matthew2587]

1. PC #3 is in a different subnet than default gateway. Changed IP to .72 and it works.

2. I created DHCP pools to allow the wireless clients to get IP addresses. (Also need to add helper address to routers)

Please reply if you need a more help and I can share the config I did.

[Harold Ritter]

Hi @Vaco ,

PC#3 is configured with an IP address in the wrong subnet. It should be part of 192.168.5.64/27, so should have an IP address in the range 192.168.5.66 to 192.168.5.94. The default GW on PC#3 is correct though.

Regards,

[Vaco]

Hi Harold,

I should have been clearer, my apologies I was in a rush. So for all end devices in the network, they've all been addressed from 10 onwards (it's part of a uni cisco assignment). And when I do change its ip to .72, I still can't ping it from PC#1, I'm really not sure why because IPv6 still allows it to go through.

[matthew2587]

Just to make sure, you have PC1 IP as 192.168.5.10, and PC3 IP as 192.168.5.72?

[Vaco]

PC1 ip is 192.168.5.10, PC3 should be 192.168.5.12
I'll include the addressing table I made according to what the assignment asked

[matthew2587]

This does not work because 192.168.5.12/27 (PC1)  is not in the same subnet as 192.168.5.65/27 (default gateway).

[Harold Ritter · Accepted solution]

Hi @Vaco ,

You can't just assigned the addresses on all the PCs starting from .10 and incrementing. You rather need to make sure that the PCs used an address from the subnet they are connected to.

I am not sure why it doesn't work for you PC#1 after changing the address on PC#3.

C:\>ipconfig

FastEthernet0 Connection:(default port)

Connection-specific DNS Suffix..:

Link-local IPv6 Address.........: FE80::2E0:B0FF:FEAD:4A37

IPv6 Address....................: 2001:DB8:ACAD:B::12

IPv4 Address....................: 192.168.5.72

Subnet Mask.....................: 255.255.255.224

Default Gateway.................: FE80::2

192.168.5.65

C:\>ping 192.168.5.10

Pinging 192.168.5.10 with 32 bytes of data:

Reply from 192.168.5.10: bytes=32 time=1ms TTL=126

Reply from 192.168.5.10: bytes=32 time=22ms TTL=126

Reply from 192.168.5.10: bytes=32 time=32ms TTL=126

Reply from 192.168.5.10: bytes=32 time=2ms TTL=126

Ping statistics for 192.168.5.10:

Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

Minimum = 1ms, Maximum = 32ms, Average = 14ms

Regards,

[Vaco]

I'm a silly goof.. The assignment asked for host allocation to start addressing end devices from 10 onwards. I figured out the correct ip addresses for IPv6 but when it came to IPv4 I was completely baffled and now I know why. I appreciate everyones help here, I reconfigured every IP address that started from 10 onwards in IPv4 and structured them accordingly. 

Thank you all.