1-4
October, 1998
GRF 400/1600 Getting Started - 1.4 Update 2
Getting Acquainted with the GRF 400
Upgrading system memory
Upgrading system memory
Figure 1-1 shows the area of system memory (control board RAM) that can be expanded to
meet site requirements. Memory upgrades are made in 128MB increments up to 512MB.
Figure 1-1. Expandable area of system memory
This chart provides general guidelines for memory required in different routing environments.
Although the figures assume BGP peers with 50K route entries, additional memory may be
required for higher average numbers of routes per BGP peer.
If the GRF is to support dynamic routing or ATMP home agents and mobile nodes, upgrade to
at least 256MB. In environments where large numbers of routes are advertised, upgrade to
512MB.
128MB RAM
32MB
8-12MB
84MB
- system software
- config files
- GateD binary
- route tables
- kernel runs
- GateD runs
= expandable area of RAM
(fixed size)
(fixed size)
- ATMP tunnels
Memory
size and
organization
256MB
- log files
212MB
340MB
468MB
RAM
--> 384MB
RAM
--> 512MB
RAM
expandable to -->
Customer
profile
Amount of
control
board
memory
needed
Space for
dynamic
routing,
ATMP
tables
Route
entries
on
media
card
Route
entries in
dynamic
routing
database
Typical
numbe
r of
peer
sessions
Static routing:
(in high-performance
environment)
128MB
84MB
150K
Typical
number:
35,800
0
Small POP
256MB
212MB
150K
Typical
number:
199,000
3
Medium POP /
ISP backbone
384MB
340MB
150K
Typical
number:
362,000
9
Large POP /
Exchange point /
Route reflection server
512MB
468MB
150K
Typical
number:
521,000
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