IP allocation help please?
 

If my host tells me he added *.*.*.200/29 to my vlan, then what are my usable IPs?

thanks :)

/29 is 8 ips, 6 usable im pretty sure

so 200 - 206?

or 201 - 207?

or 202 -208?

or....

6 usable...

201-207

they should be telling you this when they email you the details

201-206 should be...

ping them... gateway should return reply .200 then you will know your usable are 201-206

usually 5 usable, perhaps 6


*.*.*.202 to *.*.*.206 and maybe 207


edit: and what fris said, email them ;)

when you find out the exact answer, come back to the thread and let us know what it was

I did email them but it took 14 hours for a reply last time, I figured asking here was a better way to spend my time.

nothing pings, I need the usable IPs so I can add them to my rc.conf

how many usable IP's did they tell you you were getting?

I asked for 5, but they didnt say how many I was getting. Sometimes i really hate this particular host, they make it much harder to do business than it should be. they pulled 5 of my IPs last july and didnt even bother telling me, I just happened to notice when another 5 stopped working and complained that 10 were down, and they said oh yeah we pulled that other 5 back in July. And with over 220 IPs spread across multiple class C's, 6 servers, and three seperate hosting companies, I dont really notice when just 5 go down.

And then when I do notice, I have to go check them all. Its a pain in the ass. And then they just give me a generic answer and dont bother telling me whats usable.

ok, I am going to say 5 usable IPs, *.*.*.202 to *.*.*.206 :2 cents:

Final Answer :1orglaugh

If it takes 14 hrs to get a reply you are at the wrong host. Actually if it takes more than 5 mins to get a reply than you are at the wrong host.:2 cents:

First and last IP in the set are network and broadcast address respectively. Some hosts may also use the first usable (second actual) IP as the gateway address.

(This is just a generic answer, and I know you don't want to hear it, but you really do have to ask your host so you're 100% sure :) )

BTW I don't know much about VLAN but I think it's also possible to configure it in such a way that you don't lose the network/broadcast/router IPs from the subnet, IOW a /29 is 8 usable IPs. I remember theplanet do it like this.

.200 network address
.201 likely gateway
.202-206 usable
.207 broadcast

It is possible they routed the space to your server in which case .201 be usable as well. Also some hosts will use another IP as gateway, perhaps last usable.

bump for Mr Pheer to tell us what was the correct answer

This was correct, thanks

aww, I was hoping you'd give credit for post #13 in this thread :1orglaugh

good to see you got things going anyways :thumbsup

Sorry, I missed that. Yes #13 was correct as well.

BLOCK | SUBNET | # OF IPs

/13 255.248.0.0 512k
/14 255.252.0.0 256k
/15 255.254.0.0 128k
/16 255.255.0.0 64k
/17 255.255.128.0 32k
/18 255.255.192.0 16k
/19 255.255.224.0 8k
/20 255.255.240.0 4k
/21 255.255.248.0 2k
/22 255.255.252.0 1k
/23 255.255.254.0 512
/24 255.255.255.0 256
/25 255.255.255.128 128
/26 255.255.255.192 64
/27 255.255.255.224 32
/28 255.255.255.240 16
/29 255.255.255.248 8
/30 255.255.255.252 4
/31 255.255.255.254 2
/32 255.255.255.255 1



first 2 IPs in a block, and very last IP are unusable when assigned in a standard vlan