[nsp] using /31s

[Robert A. Hayden]

We've also seen some monitoring systems getting "confused" (polite word) 
by using /31s.  HPOV comes to mind.  Wish it wouldn't since this would 
save probably 3000 IPs on our backbone *grumble*.  

On Mon, 9 Feb 2004 atticus at satanic.org wrote:

> 
> Be sure to check Feature Navigator, as its still somewhat new.. The name
> you're looking for is "Using 31-bit Prefixes on IPv4 Point-to-Point
> Links".
> 
> 
> On Mon, 9 Feb 2004, matthew zeier wrote:
> 
> >
> > I'm missing a nugget of clue -
> >
> > edge2(config)#interface Serial6/0/4:0
> > edge2(config-if)#ip address 216.23.183.248 255.255.255.254
> > Bad mask /31 for address 216.23.183.248
> > edge2(config-if)#ip address 216.23.183.249 255.255.255.254
> > Bad mask /31 for address 216.23.183.249
> > edge2(config-if)#ip address 216.23.183.250 255.255.255.254
> > Bad mask /31 for address 216.23.183.250
> > edge2(config-if)#ip address 216.23.183.251 255.255.255.254
> > Bad mask /31 for address 216.23.183.251
> >
> > 216.23.183.0/24 is VSLM'd but has mostly /30s.  I have essentially two /30s
> > left (216.23.183.248/30, 216.23.183.252/30) and figured I'd double that with
> > /31s but I'm having issues with IOS accepting it.
> >
> >
> >
> >
> > --
> > matthew zeier                        | "Nothing in life is to be feared.
> > InteleNet Communications, Inc.       |  It is only to be understood."
> > (949) 784-7904                       |       - Marie Curie
> >
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