Networks

Question

Can’t send data across a subnet

By Shaggy1405 ·
Tags: Networking
I have an large subnet of 10.89.160/21
Allowing ip range of 10.89.160.1 - 10.89.167.254
Gateway of 10.89.160.1
I Can ping from e.g 10.89.162.34 to 10.89.162.60
But can’t ping from 10.89.165.30 to 10.89.163.5 again gateway of 10.89.160.1

Any ideas

Shaggy1405
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All Answers

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Subnet mask is likely set incorrectly.

by spetryschuk In reply to Can’t send data across a ...

Are the IPs static, or distributed via DHCP?

It sounds to me like the devices are configured with the wrong subnet mask - likely configured as a /24 rather than your desired /21.

If you review the configuration on one of your devices (using the network configuration GUI or ipconfig / ifconfig depending on OS), you can confirm this suspicion.

Also check to ensure your DHCP server is handing out the correct subnet mask.

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