[cisco-bba] Using more than one IP Local Pool

[James Bensley]

On 4 July 2017 at 22:41, Juergen Marenda <cnsp at marenda.net> wrote:
>> You don't need to have a contiguous IP block in an IP Pool. You can simply
>> do something like this:
>>
>> TestBNG(config)# ip local pool dynamic-dsl 192.168.0.0 192.168.255.255
>> TestBNG(config)# ip local pool dynamic-dsl 172.16.0.0 172.31.255.255
>> TestBNG(config)# ip local pool dynamic-dsl 10.0.0.0 10.255.255.255
>
> Remember that there exists an special IPv4 Address-range for "Carrier Grade
> NAT".
>
> Why not assign fixed (real) IPv4/32 for each dial-up account ?
>
> Just my 0.01 $
>
> Juergen.

We use static IPs for all xDSL customers/sites, one problem we have
from this is that each LNS (depending on which one the customer
connects to) is announcing loads of /32's into our iBGP that aren't
aggregatable/summary routes, which they would be if we had a unique
pool per LNS. We have thousands of extra routes in our iBGP because of
this, it's not a major issues but still not ideal.

Cheers,
James.