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Static Routes No Longer Working Properly

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Brian_M
New Member

Static Routes No Longer Working Properly

Occasionally I have to set up a lab environment for testing and in the past I used static routes configured on the Comcast supplied Netgear firewall/modem to all access to the various lab subnets. I haven’t had to use the lab environment for several months and discovered that traffic using the static routes is now unreliable where it used to flow as expected.

 

Was there a firmware update that negatively impacted static routes? I saw another post that the static route functionality on the Comcast Cisco BWG was not working.

 

If I add a static route on a Windows box sitting on the 10.1.10.0 network to use 10.1.10.200 as the gateway for my lab subnets, traffic flows fine. When I use the Netgear device to route the traffic, traffic flow is unreliable.

 

My configuration is:
10.1.10.0/24 network hanging off Netgear device => Router (10.1.10.200) => various subnets (ie 10.1.50.0/24, 10.1.60.0/24, 10.1.70.0/24)

 

Netgear static routes:
Name   Destination IP   Subnet Mask   Gateway IP
10.1.50.0   10.1.50.0   255.255.255.0   10.1.10.200
10.1.60.0   10.1.60.0   255.255.255.0   10.1.10.200
10.1.70.0   10.1.70.0   255.255.255.0   10.1.10.200

 

This is what I get when using static routes on the Netgear device:
Pinging 10.1.50.10 with 32 bytes of data:
Reply from 10.1.50.10: bytes=32 time=1ms TTL=127
Request timed out.
Request timed out.
Request timed out.
Reply from 10.1.50.10: bytes=32 time=1ms TTL=127
Reply from 10.1.50.10: bytes=32 time=1ms TTL=127
Request timed out.
Reply from 10.1.50.10: bytes=32 time=1ms TTL=127
Request timed out.
Reply from 10.1.50.10: bytes=32 time=1ms TTL=127
Reply from 10.1.50.10: bytes=32 time=1ms TTL=127
Request timed out.

 

Thanks

Trusted Forum Contributor

Re: Static Routes No Longer Working Properly

Hello Brian_M and welcome,

 

First, 10.1.10.0 is not a valid Cisco DPC LAN address. You should make sure your LAN DHCP address is 10.1.10.1. The next thing is that you must change your start address to 10.1.10.10 and your end address is typically 10.1.10.252. This start / end dynamic address range enables you to have 10.1.10.2 through 10.1.10.9 for your use of DHCP static IP addresses. This will provide 8 total DHCP Static IP addresses that will never change like those within your dynamic address range.

 

Hope this helps you out.