[j-nsp] System board memory expansion on M7i

[Phill Jolliffe]

The cfeb computes/compiles the jtree that will be stored in the in the
sram. Presumably this means the raw forwarding table has to be stored
in the cfeb.

The 'show route summary' command (on the cfeb not the normal RE CLI)
shows this.

CSBR0(London-AMS1 vty)# show route summary

IPv4 Route Tables:
Index         Routes     Size(b)
--------  ----------  ----------
Default          186       13224
1                  9         638
2                  5         353

MPLS Route Tables:
Index         Routes     Size(b)
--------  ----------  ----------
Default            1          68

IPv6 Route Tables:
Index         Routes     Size(b)
--------  ----------  ----------
Default            4         305
1                 12         961

Other features will require/increase space in dram on the cfeb.

ppmd in the pfe
bfd in the pfe
clowd?
DCU/SCU

prob loads of others.