On Mon, Jan 25, 2010 at 2:23 PM, Ryan Harden <harde...@uiuc.edu> wrote:
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> Our numbering plan is this:
>
> 1) Autoconfigured hosts possible? /64
> 2) Autoconfigured hosts not-possible, we control both sides? /126
> 3) Autoconfigured hosts not-possible, we DON'T control both sides? /64
> 4) Loopback? /128
>
> Within our /48 we've carved it into (4) /50s.
> * First, Infrastructure. This makes ACLs cake.
> ** Within this /50 are smaller allocations for /126s and /128s and /64s.
> * Second, User Subnets (16k /64s available)
> ** All non-infrastructure subnets are assigned from this pool.
> * Third, Reserved.
> * Fourth, Reserved.
>
> We believe this plan gives us the most flexibility in the future. We
> made these choices based upon what works the best for us and our tools
> and not to conserve addresses. Using a single /64 ACL to permit/deny
> traffic to all ptp at the border was extremely attractive, etc.
>
> - --
This is what we have planned:
2620:0000:xx00::/41 AS-NETx-2620-0-xx00
2620:0000:xx00::/44 Infrastructure
2620:0000:xx01::/48 Pop1 Infrastructure
2620:0000:xx01:0000::/64 Router Loopback
(2^64 x /128)
2620:0000:xx01:0001::/64 Transit net
(2^48 x /112)
2620:0000:xx01:0002::/64 Server Switch
management
2620:0000:xx01:0003::/64 Access Switch
management
2620:0000:xx0f::/48 Pop16 Infrastructure
2620:0000:xx10::/44 Sparse Reservation
2620:0000:xx20::/44 Sparse Reservation
2620:0000:xx30::/44 Pop1 Services
2620:0000:xx30::/48 Cust1 Services
2620:0000:xx30:0001::/64 VLAN_1
2620:0000:xx30:4094::/64 VLAN_4094
2620:0000:xx31::/48 Cust2 Services
2620:0000:xx31:0001::/64 VLAN_1
2620:0000:xx31:4094::/64 VLAN_4094
2620:0000:xx32::/48 Cust3 Services
2620:0000:xx31:0001::/64 VLAN_1
2620:0000:xx31:4094::/64 VLAN_4094
2620:0000:xx32::/48 Cust4 Services
2620:0000:xx31:0001::/64 VLAN_1
2620:0000:xx31:4094::/64 VLAN_4094
2620:0000:xx32::/48 RES-PD-32 (4096 x /60)
2620:0000:xx3f::/48 RES-PD-3f (4096 x /60)
2620:0000:xx40::/44 Pop2 Services
2620:0000:xx50::/44 Pop3 Services
2620:0000:xx60::/44 Pop4 services
2620:0000:xx70::/44 Pop5 Services
This is a multiple campus network, customers are all internal. I have
had to squeeze Residential PDs down to /60s to make it fit. One Pop is
really 3 sites in one. This has had to be massaged into one Pop also.
To be safe, I'm thinking of adjusting loopbacks and ptp to be /64s.
I'm reasonably happy with the plan, but it doesn't seem to have that
much room to grow.
--
Tim:>
Sent from Brooklyn, NY, United States
