NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
Solved
/31 Subnets
I work for a ISP and just got off the phone with gentleman that that said he had a Nighthawk. When he tried to set a /31 it gave him an invalid subnet error. Searching here I see older posts saying this is a known problem.
Can someone confirm the /31 is still invalid? If it is Invalid is there any plans to add support for rfc3021? Dose this affect all Netgear equipment or just Nighthawk line?
Thank you
Well would need to know what exact NG model. Users seem to use "Nighthawk" as a over all model for everything. NIghthawk covers many different models. There is is NON NIghthawk routers as well.
Is this for a Mobile Router?
The /31 maybe something supported on a ISP side of things however when it some to a LAN side and home users intended target of having multiple devices, this would not be something that NG would use nor be supported on the LAN side. LAN side for consumer home users generally have way more than two device, would not have a need for this kind of configuration and thus this configuration would not work. I just checked my XR1000 on the lan side for this and it's not taking the sub net mask for /31. So I presume NG doesn't support his kind of configuration on there routers.
/31 would be seen on point to point connections I would presume and thus mostly seen in maybe business or enterprise class environments. I would hope that more appropriate equipment would be used here and not a consumer grade low budget router if that kind of configuration is needed.
6 Replies
What model router is being referenced?
Since that subnet supports only two hosts and home class routers are designed and intended for way more then 2 hosts, I presume that this may not be support on NG routers.
Not sure what model. He only referred to is as a Nighthawk. I assumed they all used the base OS. Also my interest is about the entire line. Customers with Nighthawks generally don't call in with speed test issues. If I need to tell customers to avoid 1 or 2 specific modules that's fine, but I'd rather not tell them to avoid them altogether if they are using /31.
/31 supports 2 host using 2 addresses. /30 supports 2 hosts using 4 addresses. Why burn the extra 2 addresses when thay are over $40 a pop currently?
We don't do homes in the part of the network I'm in. Recently we started offering speeds lower than 1G. It's attracting business that do not have IT departments so we are seeing more Soho gear and fewer IPs needed. /29 is what most customers get.
Well would need to know what exact NG model. Users seem to use "Nighthawk" as a over all model for everything. NIghthawk covers many different models. There is is NON NIghthawk routers as well.
Is this for a Mobile Router?
The /31 maybe something supported on a ISP side of things however when it some to a LAN side and home users intended target of having multiple devices, this would not be something that NG would use nor be supported on the LAN side. LAN side for consumer home users generally have way more than two device, would not have a need for this kind of configuration and thus this configuration would not work. I just checked my XR1000 on the lan side for this and it's not taking the sub net mask for /31. So I presume NG doesn't support his kind of configuration on there routers.
/31 would be seen on point to point connections I would presume and thus mostly seen in maybe business or enterprise class environments. I would hope that more appropriate equipment would be used here and not a consumer grade low budget router if that kind of configuration is needed.