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SF300 and using Subnet Zero and All-Ones Subnet

bmanley
Level 1
Level 1

Anyone have experience using Subnet Zero and the All-Ones Subnet on the SF300 series switches?

We have a scenario which we are using an SF300 as a Gateway Device.  We have a /29 broken up into two /30 subnets.  We have two routers which need to be isolated from each other, but use the same Internet service/circuit.

We are in need of adding a third router which needs to be isolated from the other two. After requesting additonal IP addresses, our provider has claimed we need to use the Subnet Zero and All-Ones Subnet to make effecient use of the IP's which will ultimately give us the additional IPs we need.

I am not familair with thsi practice or setup. Can anyone provide insight and/or if the SF300 series supports this?

1 Reply 1

Tom Watts
VIP Alumni
VIP Alumni

Hi Brian, this switch will not support an all-one subnet mask.

-Tom
Please mark answered for helpful posts

-Tom Please mark answered for helpful posts http://blogs.cisco.com/smallbusiness/