[nsp] RE: Recommendations

[Robert E. Seastrom]

David Wolsefer <dwolsefer at totality.com> writes:

> We need a little bit more informaiton, but to take 2 full views, you should
> have at least 256 Mb of memory and probably some more.

You do not need "probably some more" to do two views...  I'm doing 4
views on a 256m VXR right now and it's starting to look a little tight
(probably not a good idea to add a fifth view).  Two views is a
breeze.

Conveniently, I have a 7206-VXR/npe300 with 256m with two full views
(well, actually one 134k route view and one 102k route view, but close
enough for government work... and CEF is enabled) right here to
illustrate the point:

Router#sho mem sum
               Head     Total(b)     Used(b)     Free(b)   Lowest(b)  Largest(b)
Processor   617696C0   210331968   121758012    88573956    67158448    77778268
      I/O   20000000    33554432      266860    33287572    33170968    33266044
    I/O-2    E000000    33554444     6408516    27145928    27145928    27145724

Plenty of breathing room.  Note that there is no turgid IGP table
here, which is likely to be the same case with the original poster.

> My own preference
> would be for a 7206 with 512 Mb memory (which requires at least an NPE-400).

My own preference would be for saving the bucks until I needed a lift
on the specs of the router, and then migrating from the NPE-300 to an
NPE-G1.  Or maybe doing as Steinar suggested and get an M7i instead of
Cisco kit.  Regardless, prices are only coming down...  :)

> A 7500 or 7600 would be overkill. A 3660 would handle 256 Mb of memory, but
> you are leaving no room for expansion in the future. They max out at 256 Mb.

A 7500 with an RSP-4 would be a good way to attack this problem if
minimal financial outlay was more important than having a modern
hardware platform that doesn't eat a lot of rack space.  I wouldn't
think of it as "overkill" at all.

As others have noted, neither a 7200 nor a 7500 nor anything else
Cisco makes in this capability range will hold up well under DoS attack.

                                        ---Rob