On Mon, 21 Oct 2019 at 23:14, <adamv0025@netconsultings.com> wrote:
The obvious drawback especially for TCAM based systems is the scale, so not only we'd need to worry if our FIB can hold 800k prefixes, but also if the filter memory can hold the same amount -in addition to whatever additional filtering we're doing at the edge (comb filters for DoS protection etc...)
This is actually somewhat cheap problem, if you optimise for it. That is rules are somewhat expensive, but N prefixes per rule are not, when designed with that requirement. Certainly the BOM effect can be entirely ignored. However this is of course only true if that was design goal, won't help in a situation where HW is in place and doesn't not scale there. Just pointing out that there are no technical or commercial problems getting there, should we so want. -- ++ytti