Can IP addresses end in .277

[sean2002]

I thought IP's could not have anumber over 255 in it?

 

[ScottMac]

That is correct. The highest possible number would be "255" (which is the highest eight-bit value).

Edit: [ Removal of a bad joke that didn't work ]


FWIW

Scott

 

[sean2002]

nevermind

 

[Smilin]

The first three messages of this thread when read one after another are just kinda funny for some reason.

 

[dlaw]

Originally posted by: Smilin
The first three messages of this thread when read one after another are just kinda funny for some reason.

I think so.

 

[bsobel]

Originally posted by: ScottMac
That is correct. The highest possible number would be "255" (which is the highest eight-bit value).

Sorry, feel compelled to clarify. That IS correct if your refering to the very common dotted quad notation (x.x.x.x), however you can specify IP addresses in other formats (such as octal, or even as a single 32bit value). Range limits for those formats are different.

Bill

 

[yoda291]

I also believe it'd be valid in an ipv6 domain, but I don't feel like thinking in hex right now.

Originally posted by: bsobel

Originally posted by: ScottMac
That is correct. The highest possible number would be "255" (which is the highest eight-bit value).

Sorry, feel compelled to clarify. That IS correct if your refering to the very common dotted quad notation (x.x.x.x), however you can specify IP addresses in other formats (such as octal, or even as a single 32bit value). Range limits for those formats are different.

Bill

 

[FUBAR]

Isn't the longes section of an IPv6 segment still 255? I thought it was formatted like a MAC just with more sections... FF:FF:FF:FF::FF:FF... man can't wait till I gotta tell someone their v6 address over the phone...

Set your IP to ay see colon twelve colon one eff colon forty six colon colon eff dee... got that? *click*

 

[lobadobadingdong]

Originally posted by: FUBAR
Isn't the longes section of an IPv6 segment still 255? I thought it was formatted like a MAC just with more sections... FF:FF:FF:FF::FF:FF... man can't wait till I gotta tell someone their v6 address over the phone...

Set your IP to ay see colon twelve colon one eff colon forty six colon colon eff dee... got that? *click*

absolutly correct, but don't forget you can't use an ip address on a machine as .255, it's used for broadcast messages, you would create a broadcast storm on any network that had a machine with an address ending that way. Also .0 is a delimeter for a set class of network and can't be used either so in a full class c network you have a max of 253 hosts (1-254).

 

[ScottMac]

The use of X.X.X.0 and X.X.X.255 are by convention only. Either would work fine if the network was set to use that system.

The old BSD systems used to use zero broadcast, System IV (System V?) Unix used all ones ... the all ones broadcast became more popular, that's all.

When LANs started to encompass a more diverse user base and broader spectrum of computin' devices, people figured out that it was probably just safer to not use either end (0's / 1's) for host addressing.

FWIW

Scott

 

[jaydee]

Originally posted by: lobadobadingdong

Originally posted by: FUBAR
Isn't the longes section of an IPv6 segment still 255? I thought it was formatted like a MAC just with more sections... FF:FF:FF:FF::FF:FF... man can't wait till I gotta tell someone their v6 address over the phone...

Set your IP to ay see colon twelve colon one eff colon forty six colon colon eff dee... got that? *click*

absolutly correct, but don't forget you can't use an ip address on a machine as .255, it's used for broadcast messages, you would create a broadcast storm on any network that had a machine with an address ending that way. Also .0 is a delimeter for a set class of network and can't be used either so in a full class c network you have a max of 253 hosts (1-254).

That's still 254 hosts since both 1 and 254 are included, no?

Also, if I understand it right, you can have 255 as one of the octets for a network portion of the address, but not the host (which would be just the last octet in a class C). Correct me if I'm wrong.