Cannot Ping switch from local hosts Packet Tracer

[Smouch]

Hi everyone,

I have a subnet I cannot work out

I am using the network 172.16.0.0/16

First subnet is 172.16.0.0/27

Consists of a router, switch, a WAP, and 20 host machines - 15 wired 5 wireless

Second subnet is 172.16.0.32/27

Consists of a router, switch, a WAP, and 20 host machines - 15 wired 5 wireless

Third is between the routers 172.16.0.64/30

2 routers 

I can only ping from 172.16.0.4 (PC11) and 172.16.0.18 to 172.16.0.2, 172.16.0.1, 172.16.0.33
All other wired end points on the 172.16.0.0/27 network cannot ping anything
But cannot ping to any wired endpoint devices in the 172.16.0.32/27 network
I cannot ping from any wired end point on 172.0.32/27 network
Wireless end points can ping all router switches and other wireless devices

[yasodasanjel]

The issue you're facing with the inability to ping certain devices in your network could be related to a few different factors. Let's address this step by step:

1. Subnet Configuration:

   • Double-check your subnet configurations to ensure that they are properly set on each device, including routers, switches, and host machines. It seems like you have a good grasp of the subnetting, but it's crucial to verify that the subnet masks match across all devices.

2. Gateway Configuration:

   • Verify that the default gateways on the host machines are correctly set. Each subnet should have its own gateway router (e.g., 172.16.0.1 for the first subnet and 172.16.0.33 for the second subnet).
   • Ensure that the routers' interfaces connecting to each subnet are correctly configured as the gateway for the respective subnet.

3. Inter-VLAN Routing:

   • If you have multiple subnets, make sure that the routers are configured to perform inter-VLAN routing, allowing communication between different subnets.

4. Firewall or Access Control Lists (ACLs):

   • Check if there are any firewall rules or access control lists configured on the routers or switches that might be blocking certain types of traffic.

5. Routing Tables:

   • Verify the routing tables on your routers to ensure they have routes for all the subnets.

6. Wired Endpoint Configuration:

   • Ensure that the wired endpoints on the 172.16.0.0/27 and 172.16.0.32/27 networks have their subnet masks correctly set and are using the respective router interface as the gateway.

7. Wireless Endpoint Configuration:

   • Since wireless endpoints can communicate with other devices, check their IP configurations and gateway settings. They seem to be working fine, which suggests that the issue may be isolated to the wired endpoints.

8. Troubleshooting Tools:

   • Use tools like "ping" and "tracert" to help identify where the communication breaks down. This can help pinpoint the specific devices or points of failure.

[Kasun Bandara]

@Smouch share your pkt file zipped here

[Smouch]

Shared