/29's here for everyone.... great for troubleshooting and any future additions typically required...;) -----Original Message----- From: Jim Wininger [mailto:jbotctc@gmail.com] Sent: July 29, 2009 4:00 PM To: nanog@nanog.org Subject: Subnet Size for BGP peers. I have a question about the subnet size for BGP peers. Typically when we turn up a new BGP customer we turn them up on a /29 or a /30. That seems to be the "norm". We connect to many of our BGP peers with ethernet. It would be a simple matter to allocate a /24 for connectivity to the customer on a shared link. This would help save on some address space. My question is, is this in general good or bad idea? Have others been down this path and found that it was a bad idea? I can see some of the pothols on this path (BGP session hijacking, incorrectly configured customer routers etc). These issues could be at least partially mitigated. Are there larger issues when doing something like this or is it a practical idea? -- Jim Wininger -- Jim Wininger jbotctc@gmail.com ---------------------------------------------------------------------------- "The information transmitted is intended only for the person or entity to which it is addressed and contains confidential and/or privileged material. If you received this in error, please contact the sender immediately and then destroy this transmission, including all attachments, without copying, distributing or disclosing same. Thank you."