[j-nsp] Juniper T640 FIB

[sthaug at nethelp.no]

> Does anyone have any ideas about FIB/RIB limits on the T640 (current config
> is RE-2000s and FPC3-E's) or is anyone with a T640 in service willing to
> share their jtree memory usage stats?

Possibly relevant, since they share the same architecture according
to http://juniper.cluepon.net/index.php/Gibson_architecture, here is
some info from one of our M320s with a full routing table:

inet.0: 528834 destinations, 2124526 routes (528817 active, 16 holddown, 1 hidden)
              Direct:     10 routes,      9 active
               Local:      9 routes,      9 active
                 BGP: 2123678 routes, 527971 active
               IS-IS:    826 routes,    825 active
                IGMP:      1 routes,      1 active
                 PIM:      2 routes,      2 active

It has FPC2s with 1G PICs in slots 0 and 3, and FPC3s with 10G PICs in
slots 5,6 and 7. "show jtree 1 memory" shows very similar results for
all of the slots:

0 M320-FPC2
   16777216 bytes total
    9226704 bytes used
    7544624 bytes available (7508480 bytes from free pages)

3 M320-FPC2
   16777216 bytes total
    9226952 bytes used
    7544360 bytes available (7507456 bytes from free pages)

5 M320-FPC3
   16777216 bytes total
    9226864 bytes used
    7544464 bytes available (7507456 bytes from free pages)

6 M320-FPC3
   16777216 bytes total
    9227008 bytes used
    7544320 bytes available (7510528 bytes from free pages)

7 M320-FPC3
   16777216 bytes total
    9226904 bytes used
    7544416 bytes available (7507968 bytes from free pages)

Steinar Haug, Nethelp consulting, sthaug at nethelp.no