Re: FW: Getting pretty close to default IPv4 route maximum for 6500/7600routers.

[Andrew Jones <aj () jonesy com au>]

Even if the first numbers were correctly calculated, they don't allow 
for further deaggregation of already advertised prefixes, which 
shouldn't be underestimated as the commercial value of each address 
increases...


On 10.06.2014 06:17, Bryan Tong wrote:
> I botched those numbers.
>
> Let me fix.
>
> According to this countdown:
> http://inetcore.com/project/ipv4ec/index_en.html we have 6.41 /8's 
> left. So
> that is 107,541,955 IPs.
>
> CIDR - Prefixes
> -----------------
> /20 - 26,255.36
> /21 - 52,510.72
> /22 - 105,021.44
> /23 - 210,042.88
> /24 - 420,085.76
>
> My apologies for my erroneous math, I was off one number making the 
> table.
>
> Johns solution to combine MPLS and IPv4 is the best solution. I would
> implement it if I hadn't already rebooted a few days ago.