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Subnet Size for BGP peers.
- Subject: Subnet Size for BGP peers.
- From: merlyn at geeks.org (Doug McIntyre)
- Date: Thu, 30 Jul 2009 15:22:24 -0500
- In-reply-to: <F791F668922D4322B895CAEB05DF1A72@bvsupport>
- References: <[email protected]> <F791F668922D4322B895CAEB05DF1A72@bvsupport>
On Thu, Jul 30, 2009 at 12:22:27AM -0400, Barton F Bruce wrote:
> So what is wrong with a /31? We use /30s but if you are short on IP space,
> look at using /31 rather than /30 links. Cuts your space usage in half.
/31's are only defined for point-to-point links.
Ethernet isn't considered PtP in general..
Many devices won't accept a /31 on anything but a PtP WAN media type link.
(or not at all).