topic Re: Package ip addressing in Operating System - HP-UX

Package ip addressing

AIMC — Tue, 10 Jan 2006 17:37:30 GMT

Hi,

Can anybody explain package ip addressing simply? In a package control script there are pairs of addresses... the IP & SUBNET, if i have an ip address for a package of say

192.168.10.55

is the SUBNET part of the pair always the same address with the last octet replaced by 0? ie

192.168.10.0

Appologies if this is very straight forward, i'm fairly new to service guard!

Thanks in advance,

Aidan

Re: Package ip addressing

A. Clay Stephenson — Tue, 10 Jan 2006 17:49:30 GMT

There is nothing different about subnetting within MC/SG; it's the same whether or not MC/SG is in play. It's not true that the entire low-order octet need be zero because
much smaller subnets are possible.

Re: Package ip addressing

AIMC — Tue, 10 Jan 2006 17:55:35 GMT

Hi A. Clay,

Thanks for the reply, i'm not too familiar with subnetting either! Are there any online sunet calculators for specific ip addresses? or can there be more than one subnet for an ip address?

Thanks,

Aidan

Re: Package ip addressing

A. Clay Stephenson — Tue, 10 Jan 2006 18:11:33 GMT

Here is a nice little free subnetting tutorial. You have to pass a simple prerequisites tests first (I scored 100% the 1st time) and after that you get to the tutorial. It's rather good.

http://www.semsim.com/ccna/tutorial/subnetting/subnetting.html

Re: Package ip addressing

A. Clay Stephenson — Tue, 10 Jan 2006 18:25:10 GMT

By the way, understanding subnetting and broadcast maps is much easier (and far clearer) if you do everything in binary. That's one of the reasons the tutorial I listed has a prerequisite section. It takes you through binary arithmatic.

Re: Package ip addressing

AIMC — Tue, 10 Jan 2006 18:50:52 GMT

Thanks again A. Clay,

I'll give it a go, the part i need to get my head around is what the package control script is defining a SUBNET as, i'm used to a subnet mask which has always looked like

255.255.255.0 .... etc, not

192.168.10.0

Aidan

Re: Package ip addressing

Sivakumar TS — Tue, 10 Jan 2006 23:38:19 GMT

Dear Aidan,

It is as simple as, you specify the "network address" in the SUBNET filed in the package configuration.

ie, for the IP - 192.168.10.55
mask 255.255.255.0

the network address in 192.168.10.0

(for example,if the mask is 255.255.0.0
then network address is 192.168.0.0 )

With Regards,

Siva.

Re: Package ip addressing

Arunvijai_4 — Tue, 10 Jan 2006 23:42:17 GMT

Hi Aidan,

Here are links of subnet calculators available online,

http://www.subnetmask.info/
http://jodies.de/ipcalc

-Arun

Re: Package ip addressing

Muthukumar_5 — Tue, 10 Jan 2006 23:46:07 GMT

Subnet is used to mask the ip-address and to provide the ip-address range.

192.168.10.55 is ip-address and 192.168.10.0 can be a network address. i.e) Your network ip-address is in the range of 192.168.10.xxx.

To get subnet mask you have to use 255.255.255.0 to get all ip-address in 192.168.10.xxx.

i.e) last byte of xxx integers are changeable to assign ip-address.

--
Muthu

Re: Package ip addressing

Muthukumar_5 — Tue, 10 Jan 2006 23:47:19 GMT

Online calculators,

http://www.t1shopper.com/tools/calculate/ip-subnet/
http://www.subnetmask.info/

You can do it with that.

If you did not post it again.

--
Muthu

Re: Package ip addressing

melvyn burnard — Wed, 11 Jan 2006 05:35:38 GMT

Quite simply, the pair you supply is the relocatable or floating IP address for your package, and the subnet that this IP address must be added to. The subnet does not necessarily have a .0 at the end, it depends on how the subnet mask is set up.
To see your subnet(s) do:
netstat -in
and look at the Network field.

Re: Package ip addressing

AIMC — Wed, 11 Jan 2006 07:15:44 GMT

Hi All,

Thanks for all of the replies, i'm sure i understand this now... with a little help from the online calculators!!

Aidan