Yep, we use /127 [L3 links] and /128s [Loopbacks] across the board (I'm in a pretty large environment). Be aware though, some vendors have TCAM limitations w/ anything anything in the /65 - /128 range, so check into it before going everywhere with those masks.
/127s give two IPs - there's no need for a /126 or /30 though. David. On Wed, Sep 12, 2012 at 3:41 AM, Bal Birdy <[email protected]> wrote: > Ok I know that it's stipulated that IPv6 should be a /64, and never really > change, but I came across some slides talking about using /126 or /127s for > point to point links (which sparked a discussion at work). Thinking along > the lines of the /30 concept with IPv4, for arguments sake, if I wanted to > work out what IP addresses I can manually configure on either end of my p2p > link, that's using IPv6, am I right in saying I use the same approach as > with IPv4 for working out the IP addresses. > > So if I say a /126 is - 1111111111111100 in binary. The last two bits give > me networks of 0,4,8 and so on. with usable ip's of 1,2 and 3. Now the 3 > comes into play as there's no concept of broadcast in IPv6 (!?), so why do > we need the broadcast IP as previously required for IPv4??? > > Is this technically correct? > > Thanks > Bal > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > http://onlinestudylist.com/mailman/listinfo/ccie_rs _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
