[ppml] 2001-2 Revisited
Dave Diller
ddiller at cogentco.com
Wed Mar 10 18:02:40 EST 2004
For those not already way-too-intimitely familiar with it, here is the current
text of 2001-2:
---
This policy allows a downstream customer's multi-homing requirement to serve as
justification for a /24 reassignment from their upstream ISP, regardless of
host requirements. Downstream customers must provide contact information for
all of their upstream providers to the ISP from whom they are requesting a /24.
The ISP will then verify the customer's multi-homing requirement and may assign
the customer a /24, based on this policy. Customers may receive a /24 from only
one of their upstream providers under this policy without providing additional
justification.
---
Now, it pretty explicitly states one /24 *per customer* in total is all that is
allowable. No ifs, ands, or buts about it. It appears to have been
tailor-made for the law office with a justifiable /27 that wishes to
multi-home, and it works well for that purpose.
How are people handling it when they have *a* customer with separate,
multihomed, geographically discrete offices? By the literal text of this
policy, this is not sufficient justification to provide them with a /24 *per
discrete site*. If the definition is commonly being stretched to include this
- and I think it is reasonable to do so, given the spirit of the policy - then
the policy should be amended to explicitly indicate that this is an acceptable
caveat.
-Dave Diller
PacketMuriqui & IP Flinger
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