[MLB-WIRELESS] IP Addressing

Tony Langdon tlangdon at atctraining.com.au
Mon Apr 8 13:06:55 EST 2002


> Unlikely with a sensible allocation policy.  A Class B is a lot of
> addresses (192.168.0.0/16 is a Class B). 

I have a heap of 192.168.x networks in use here... Routing/firewalling to
external 192.168 addresses _will_ be a major pain! :(

Basically, 192.168.0.0 - 192.168.31.255 is all routed to various VPNs (my
own internal addresses are 192.168.15.x).  Also getting some allocations
around 192.168.100.x and 192.168.200-205.x

> IPv6 has a go at some of the allocation/conflict issues by 
> having scoped
> addresses.  There are link-local addresses, site-local addresses and
> global addresses.  Link local addresses are simply 
> _not_relevant_ outside
> the context of the link in question (e.g. an Ethernet 
> broadcast domain, a
> PPP link or whatever).  Site local addresses are relevant 
> with the "site",
> whatever that is...  The Brisbane Mesh people had some 
> discussion on this
> if you're at all interested.  >;-Q

Well, IPv6 would go a long way towards solving problems. :)  Who needs more
IP addresses?
> 
> Incidentally, there should be no problem having a mix of RFC1918 and
> "real" addresses on our eventual MAN.  They're all just 
> addresses, after
> all, and will happily co-exist in routing tables.
> 
> Pick something that isn't in use.  Be prepared to renumber at 
> some point.

Well, I'm going for 10.x stuff myself.  The design of my wireless side will
mean renumbering shouldn't be a problem in the 10.x segments...  The 192.168
stuff is mostly not easily changed...

If you're wondering why I have so many IPs...  Just I have a lot of VPN....
I'll just ping home from the office... ;)

C:\WINDOWS\DESKTOP>ping 192.168.15.1

Pinging 192.168.15.1 with 32 bytes of data:

Reply from 192.168.15.1: bytes=32 time=59ms TTL=254
Reply from 192.168.15.1: bytes=32 time=58ms TTL=254
Reply from 192.168.15.1: bytes=32 time=58ms TTL=254
Reply from 192.168.15.1: bytes=32 time=63ms TTL=254

---
Outgoing mail has been scanned for viruses
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.336 / Virus Database: 188 - Release Date: 11-Mar-02
 

This correspondence is for the named person’s use only. It may contain
confidential or legally privileged information or both. No confidentiality
or privilege is waived or lost by any mistransmission. If you receive this
correspondence in error, please immediately delete it from your system and
notify the sender. You must not disclose, copy or rely on any part of this
correspondence if you are not the intended recipient.

Any opinions expressed in this message are those of the individual sender.


To unsubscribe: send mail to majordomo at wireless.org.au
with "unsubscribe melbwireless" in the body of the message



More information about the Melbwireless mailing list