[j-nsp] JunOS versions, MX and lots of policers

[Pekka Savola]

On Fri, 12 Feb 2010, OBrien, Will wrote:
> This behaves pretty well, but requires that the policer be applied on every /24 that I want.
> With two /16s and some /26s in there, this makes for a pretty long config.

It depends on what you want.  If your /16's are contiguous, you could 
generate automatically policers for each one of them separately.  E.g. 
specify sourfce-prefix-length 16, subnet-prefix-length 32 -- that 
would generate 64K host-specific policers, or if you're fine with 
subnet granularity, you could use e.g. subnet-prefix-length 24, that 
would result in 256 policers.

Not sure what's the MX capacity for the number of policers, but if you 
implemented host-specific policers for all of your IP space, that 
would be some 130K policers.  Sounds a bit on the high side to me, but 
unfortunately I can't recall the tested scaling numbers..

-- 
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings