nanog mailing list archives
RE: ISP customer assignments
From: "Lee Howard" <lee () asgard org>
Date: Tue, 6 Oct 2009 10:21:08 -0400
-----Original Message----- From: William Herrin [mailto:herrin-nanog () dirtside com] Sent: Monday, October 05, 2009 12:58 PM To: Brian Johnson Cc: nanog () nanog org Subject: Re: ISP customer assignments /60 - the smallest amount you should allocate to a downstream customer with more than one computer. Anything smaller will cost you extra management overhead from not matching the nibble boundary for RDNS delegation,
I have a lack of imagination, I guess. I can't imagine anyone larger than a small residential user being assigned a /60 or less. Therefore, nybble boundary for rDNS delegation only matters if you delegate rDNS for that block.
handling multiple routes when the customer grows, not
Any customer getting a /60 or less will be dynamically numbered (RA, DHCPv6, whatever), and if more space is needed, should be easily renumbered into a larger prefix.
matching the standard /64 subnet size and a myriad other obscure issues.
I don't know about "myriad" but I agree that /64 is the standard subnet size. I am *not* advocating assignments of /60 or less, just pointing out that if you do it, it doesn't have to break. Lee
Current thread:
- Re: ISP customer assignments, (continued)
- Re: ISP customer assignments Ricky Beam (Oct 05)
- Re: ISP customer assignments Dan White (Oct 06)
- RE: ISP customer assignments TJ (Oct 05)
- Re: ISP customer assignments Valdis . Kletnieks (Oct 05)
- Message not available
- Re: ISP customer assignments Dan White (Oct 06)
- Re: ISP customer assignments TJ (Oct 06)
- Re: ISP customer assignments James Hess (Oct 06)
- Re: ISP customer assignments Michael Dillon (Oct 08)
- Re: ISP customer assignments Steven Bellovin (Oct 05)
- Re: ISP customer assignments Owen DeLong (Oct 05)
- Re: ISP customer assignments Michael Thomas (Oct 05)
- Re: ISP customer assignments David Andersen (Oct 05)
- Re: ISP customer assignments Michael Thomas (Oct 05)
- Re: ISP customer assignments David Barak (Oct 05)
- Re: ISP customer assignments David Conrad (Oct 05)
- Re: ISP customer assignments Adrian Chadd (Oct 05)
- Re: ISP customer assignments Joe Greco (Oct 05)
- Re: ISP customer assignments Adrian Chadd (Oct 05)